CN202556678U - Sealing structure for back-pressure injection mold - Google Patents
Sealing structure for back-pressure injection mold Download PDFInfo
- Publication number
- CN202556678U CN202556678U CN2012201996321U CN201220199632U CN202556678U CN 202556678 U CN202556678 U CN 202556678U CN 2012201996321 U CN2012201996321 U CN 2012201996321U CN 201220199632 U CN201220199632 U CN 201220199632U CN 202556678 U CN202556678 U CN 202556678U
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- China
- Prior art keywords
- sealing ring
- quiet template
- slide block
- template
- moving platen
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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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- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a sealing structure for a back-pressure injection mold, which comprises a fixed module, a movable module, a fixed template and a movable template, wherein the fixed module is arranged on the fixed template; and the movable module is arranged on the movable template. The sealing structure is characterized in that a first seal ring is arranged on a parting surface between the fixed template and the movable template, and is arranged in a first ring-shaped groove formed in the fixed template or the movable template; an air sealing plate fixedly connected onto the fixed template is arranged on the outer side of the fixed template; and a third seal ring is arranged between the air sealing plate and the fixed template, and is arranged in a third ring-shaped groove formed in the air sealing plate or/and the fixed template. Through the sealing structure, the sealing problem of the back-pressure molding die is solved, dies with complex structures can be sealed, and all parts with leakage possibility of the die can be closed in a sealing area, so that higher gas pressure is more beneficial to generation in a die cavity.
Description
Technical field
The utility model relates to a kind of injection mold, and is especially relevant with a kind of back-pressure injection mold.
Background technology
In chemical blowing, little frothing injection process, the gas that reaction produces or be dissolved in the supercritical gas in the molten plastic, along with reducing of pressure, the reduction of temperature, gradually nucleation, grow up.Grow up to a certain degree the time near the bubble on product surface, must break, form pit on the product surface, thereby caused the bad of product cooling back surface quality.In order to improve the product surface quality in the frothing injection, introduced the method for back-pressure.Before injection moulding, in mold cavity, feed Compressed Gas and keep pressure in the mold cavity at 3～15mpa, make the plastics of fusion under certain (back-pressure) power effect, fill die cavity.The nuclei of bubbles at materials flow forward place receives extraneous pressure all the time, and bubble is grown up and is restricted, thereby has suppressed breaking of product blibbing greatly.Hardening by cooling along with the product surface has further stoped breaking of blibbing, thereby can obtain the final plastic product that surface quality significantly improves.For some complicated dies, particularly be provided with edge assembly, movable members in dynamic model one side more, air seal is difficulty very.In order to make gas in the die cavity maintain higher a, pressure stable, just must take into full account and adopt hermetically-sealed construction targetedly, realize air seal in the die cavity.But some sealing means that the back-pressure mould is taked in the prior art also exist such or such deficiency, await further improvement.
The utility model content
The task of the utility model is to solve the existing technical problem of back-pressure injection mold sealing means in the prior art, and a kind of new hermetically-sealed construction that is used for the back-pressure injection mold is provided.
Its technical solution is:
A kind of hermetically-sealed construction that is used for the back-pressure injection mold comprises quiet module, dynamic model piece, quiet template and moving platen, and quiet module is arranged on the quiet template, and the dynamic model piece is arranged on the moving platen; Die joint between quiet template and the moving platen is provided with first sealing ring, and first sealing ring is arranged in first annular groove that is opened on quiet template or the moving platen.
Position near periphery between above-mentioned quiet module and quiet template is provided with second sealing ring, and second sealing ring is arranged in second annular groove that is opened on quiet module or the quiet template.
Arranged outside in above-mentioned quiet template has the gas sealing plate that can be fixedly connected on the quiet template, between gas sealing plate and quiet template, is provided with the 3rd sealing ring, and the 3rd sealing ring is placed in the 3rd annular groove that is opened on gas sealing plate and/or the quiet template.
Arranged outside at above-mentioned moving platen has the gas sealing plate that can be fixedly connected on the moving platen, between gas sealing plate and moving platen, is provided with the 3rd sealing ring, and the 3rd sealing ring is placed in the 3rd annular groove that is opened on gas sealing plate and/or the moving platen.
Above-mentioned quiet template is provided with push rod; The through hole of push rod is positioned at the circle inner region of the second or the 3rd sealing ring; The position of the corresponding through hole of gas sealing plate and/or quiet template is provided with the push rod o-ring groove, has inserted axial sealing ring in the push rod o-ring groove No. one, and push rod passes axial sealing ring No. one.
Above-mentioned push rod is an angle ejector rod, comprises one section cylindrical body of rod and tiltedly comes directly towards, and the cylindrical body of rod passes axial sealing ring No. one.
The above-mentioned hermetically-sealed construction that is used for the back-pressure injection mold also comprises slide block, and slide block is enclosed to wrap in quiet template or the moving platen, is provided with the slide block sealing ring between slide block and the quiet template, or is provided with the slide block sealing ring between slide block and the moving platen.
The above-mentioned hermetically-sealed construction that is used for the back-pressure injection mold also comprises the slide block that can transport water; Slide block is enclosed to wrap in quiet template or the moving platen; The rigidity water pipe that connects slide block passes quiet template or moving platen; Pass the position at the rigidity water pipe of quiet template or moving platen and be provided with axial sealing ring No. two, the rigidity water pipe passes axial sealing ring No. two.
The above-mentioned hermetically-sealed construction that is used for the back-pressure injection mold also comprises the slide block that can transport water, and slide block is enclosed to wrap in quiet template or the moving platen, and the hose that connects slide block is connected on the water inlet that is opened on quiet template or the moving platen.
Above-mentioned each axial sealing ring is a y-type seal ring.
The utlity model has following useful technique effect:
The utility model can solve the sealing problem of back-pressure injection mold preferably; And mould that can the hermetically-sealed construction more complicated; Can the part that mould possibly leak gas all be enclosed within the sealing area, thereby help in mold cavity, setting up higher gas pressure more.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is illustrated further:
Fig. 1 is the structural principle sketch map of a kind of embodiment of the utility model.
Fig. 2 is the structural principle sketch map of the another kind of embodiment of the utility model.
Fig. 3 shows the axial sealing ring in the utility model.
The specific embodiment
In conjunction with Fig. 1, a kind of hermetically-sealed construction that is used for the back-pressure injection mold comprises quiet module 1, dynamic model piece 2, quiet template 3 and moving platen 4, and quiet module is arranged on the quiet template, and the dynamic model piece is arranged on the moving platen.Die joint between quiet template and the moving platen is provided with first sealing ring, 5, the first sealing rings and is arranged in first annular groove that is opened on quiet template or the moving platen, and first annular groove is opened on the moving platen in this example; The width of first annular groove is preferably 1mm～12mm.Be arranged in second annular groove that is opened on quiet module or the quiet template being provided with second sealing ring, 6, the second sealing rings near the position of periphery between above-mentioned quiet module and the quiet template, second annular groove is opened on the quiet module in this example.Above-mentioned quiet template is provided with push rod 7; The through hole of push rod is positioned at the circle inner region of second sealing ring; The position of the corresponding through hole of quiet template is provided with the push rod o-ring groove, has inserted axial sealing ring 8 in the push rod o-ring groove No. one, and push rod passes axial sealing ring No. one; Above-mentioned axial sealing ring is preferably y-type seal ring, referring to Fig. 3.
In conjunction with Fig. 2, a kind of hermetically-sealed construction that is used for the back-pressure injection mold comprises quiet module 1, dynamic model piece 2, quiet template 3 and moving platen 4, and quiet module is arranged on the quiet template, and the dynamic model piece is arranged on the moving platen.Die joint between quiet template and the moving platen is provided with first sealing ring, 5, the first sealing rings and is arranged in first annular groove that is opened on quiet template or the moving platen, and first annular groove is opened on the moving platen in this example; The width of first annular groove is preferably 1mm～12mm.Arranged outside in above-mentioned quiet template has the gas sealing plate 9 that can be fixedly connected on the quiet template; Between gas sealing plate and quiet template, be provided with the 3rd sealing ring 10; The 3rd sealing ring is placed in the 3rd annular groove that is opened on gas sealing plate and/or the quiet template, and the 3rd annular groove is opened on the quiet template in this example.Above-mentioned quiet template is provided with push rod 7; The through hole of push rod is positioned at the circle inner region of the 3rd sealing ring; The position of the corresponding through hole of gas sealing plate is provided with the push rod o-ring groove, has inserted axial sealing ring 8 in the push rod o-ring groove No. one, and push rod passes axial sealing ring No. one; Above-mentioned axial sealing ring is preferably y-type seal ring, referring to Fig. 3.
If above-mentioned push rod is an angle ejector rod, it comprises one section cylindrical body of rod and tiltedly comes directly towards that the cylindrical body of rod passes axial sealing ring No. one.
Except that aforesaid way, the hermetically-sealed construction that is used for the back-pressure injection mold also comprises slide block, and slide block is enclosed to wrap in quiet template or the moving platen, is provided with the slide block sealing ring between slide block and the quiet template, or is provided with the slide block sealing ring between slide block and the moving platen.Can also be, the rigidity water pipe that connects slide block passes quiet template or moving platen, passes the position at the rigidity water pipe of quiet template or moving platen and is provided with axial sealing ring No. two, and the rigidity water pipe passes axial sealing ring No. two.Can also be that the hose that connects slide block is connected on the water inlet that is opened on quiet template or the moving platen.
If the structure more complicated of quiet mould one side; The utility model can also have such as following variation; That is: the arranged outside at moving platen has the gas sealing plate that can be fixedly connected on the moving platen; Between gas sealing plate and moving platen, be provided with the 3rd sealing ring, the 3rd sealing ring is placed in the 3rd annular groove that is opened on gas sealing plate and/or the moving platen.
The related content of not addressing in the aforesaid way is taked or is used for reference prior art and can realize.
Though below with reference to accompanying drawing; Detailed explanation has been carried out in design to the invention; But those skilled in the art also can recognize; Under the prerequisite that does not break away from the claim qualification, still can make various improvement and conversion, and this kind improvement and conversion must be worked as the protection domain that belongs to the utility model to the invention.
Claims (9)
1. a hermetically-sealed construction that is used for the back-pressure injection mold comprises quiet module, dynamic model piece, quiet template and moving platen, and quiet module is arranged on the quiet template, and the dynamic model piece is arranged on the moving platen; It is characterized in that: the die joint between quiet template and the moving platen is provided with first sealing ring, and first sealing ring is arranged in first annular groove that is opened on quiet template or the moving platen.
2. a kind of hermetically-sealed construction that is used for the back-pressure injection mold according to claim 1; It is characterized in that: the position near periphery between said quiet module and quiet template is provided with second sealing ring, and second sealing ring is arranged in second annular groove that is opened on quiet module or the quiet template.
3. a kind of hermetically-sealed construction that is used for the back-pressure injection mold according to claim 1 and 2; It is characterized in that: the arranged outside in said quiet template has the gas sealing plate that can be fixedly connected on the quiet template; Between gas sealing plate and quiet template, be provided with the 3rd sealing ring, the 3rd sealing ring is placed in the 3rd annular groove that is opened on gas sealing plate and/or the quiet template.
4. a kind of hermetically-sealed construction that is used for the back-pressure injection mold according to claim 3; It is characterized in that: said quiet template is provided with push rod; The through hole of push rod is positioned at the circle inner region of the second or the 3rd sealing ring; The position of the corresponding through hole of gas sealing plate and/or quiet template is provided with the push rod o-ring groove, has inserted axial sealing ring in the push rod o-ring groove No. one, and push rod passes axial sealing ring No. one.
5. a kind of hermetically-sealed construction that is used for the back-pressure injection mold according to claim 4, it is characterized in that: said push rod is an angle ejector rod, comprises one section cylindrical body of rod and tiltedly comes directly towards, the cylindrical body of rod passes axial sealing ring No. one.
6. a kind of hermetically-sealed construction that is used for the back-pressure injection mold according to claim 1; It is characterized in that also comprising slide block; Slide block is enclosed to wrap in quiet template or the moving platen, is provided with the slide block sealing ring between slide block and the quiet template, or is provided with the slide block sealing ring between slide block and the moving platen.
7. a kind of hermetically-sealed construction that is used for the back-pressure injection mold according to claim 1; It is characterized in that also comprising the slide block that to transport water; Slide block is enclosed to wrap in quiet template or the moving platen; The rigidity water pipe that connects slide block passes quiet template or moving platen, passes the position at the rigidity water pipe of quiet template or moving platen and is provided with axial sealing ring No. two, and the rigidity water pipe passes axial sealing ring No. two.
8. a kind of hermetically-sealed construction that is used for the back-pressure injection mold according to claim 1; It is characterized in that also comprising the slide block that to transport water; Slide block is enclosed to wrap in quiet template or the moving platen, and the hose that connects slide block is connected on the water inlet that is opened on quiet template or the moving platen.
9. a kind of hermetically-sealed construction that is used for the back-pressure injection mold according to claim 4 is characterized in that: said axial sealing ring is a y-type seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201996321U CN202556678U (en) | 2012-05-07 | 2012-05-07 | Sealing structure for back-pressure injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201996321U CN202556678U (en) | 2012-05-07 | 2012-05-07 | Sealing structure for back-pressure injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202556678U true CN202556678U (en) | 2012-11-28 |
Family
ID=47206374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201996321U Expired - Lifetime CN202556678U (en) | 2012-05-07 | 2012-05-07 | Sealing structure for back-pressure injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202556678U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106881827A (en) * | 2017-04-05 | 2017-06-23 | 青岛海信模具有限公司 | A kind of encapsulating method and mould of extraneous gas aided injection mould mould |
| CN107891575A (en) * | 2017-11-29 | 2018-04-10 | 东莞智昊光电科技有限公司 | Injection mold and dynamic model processing method |
| CN111136875A (en) * | 2018-11-06 | 2020-05-12 | 临沂大学 | Back pressure injection mold seal structure |
-
2012
- 2012-05-07 CN CN2012201996321U patent/CN202556678U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106881827A (en) * | 2017-04-05 | 2017-06-23 | 青岛海信模具有限公司 | A kind of encapsulating method and mould of extraneous gas aided injection mould mould |
| CN106881827B (en) * | 2017-04-05 | 2019-09-03 | 青岛海信模具有限公司 | A kind of encapsulating method and mold of extraneous gas aided injection mould mold |
| CN107891575A (en) * | 2017-11-29 | 2018-04-10 | 东莞智昊光电科技有限公司 | Injection mold and dynamic model processing method |
| CN111136875A (en) * | 2018-11-06 | 2020-05-12 | 临沂大学 | Back pressure injection mold seal structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121128 |