CN201325150Y - An injection mold - Google Patents
An injection mold Download PDFInfo
- Publication number
- CN201325150Y CN201325150Y CNU2008202358868U CN200820235886U CN201325150Y CN 201325150 Y CN201325150 Y CN 201325150Y CN U2008202358868 U CNU2008202358868 U CN U2008202358868U CN 200820235886 U CN200820235886 U CN 200820235886U CN 201325150 Y CN201325150 Y CN 201325150Y
- Authority
- CN
- China
- Prior art keywords
- core rod
- electric heating
- heating body
- protruding rank
- groove
- 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 30
- 239000007924 injection Substances 0.000 title claims abstract description 30
- 238000005485 electric heating Methods 0.000 claims abstract description 41
- 238000009835 boiling Methods 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Images
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to an injection mold, comprising a front mold and a back mold; wherein the front mold comprise a front mold frame, a front mold core and an electric heating body; the front mold frame is provided with a groove; the front mold core and the electric heating body are positioned inside the groove of the front mold frame; the outer surface of the front mold core is provided with a plurality of convex stages; wherein the convex stages are formed into a plurality of convex stage grooves; the electric heating body is arranged between the front mold core and the front mold frame, and is positioned inside the convex stage groove of the front mold core and is pasted on the outer surface of the front mold core. The injection mold adopts the electric heating body to heat up the front mold core so as to make the temperature of the surface inside the mold cavity rise to the setting temperature, thereby the weld line on the surface of the injection product can be eliminated without equipping with a complex control system, a steam transfer piping and other subsidiary equipment. Therefore, the additional investment costs except for the mold, the electric heating body and an electric box for controlling the electric heating body can be reduced. Moreover, the mold equipped with such electric heating body can be operated by anyone who only masters the prior general knowledge in the process of injection.
Description
Technical field
The utility model belongs to mould applications, relates in particular to a kind of injection mold.
Background technology
The face-piece of electronic product such as CRT, LCD is generally injecting products, and injection mold comprises front mould and back mould, core rod and preceding mould bases before front mould comprises.Preceding core rod generally claims die, and the back core rod that matches with front mould generally claims punch.After closing up, forward and backward core rod just forms a chamber.Injection machine through supercooling, has just formed an injecting products after by the mould injection molding mouth glue being injected mold cavity, and the outer surface of injecting products is formed by preceding core rod, and the inner surface of injecting products is formed by the back core rod.Therefore, do the moulding process of preceding core rod well, just can improve the surface quality of injecting products.
At present, the major defect of product surface quality is the folder waterline, the formation of folder waterline be two road glue in conjunction with the time because the mold cavity temperature is low excessively causes.In the prior art, adopt steam, deep fat or hot water to give mold heated usually, to eliminate the surface defects of products of high luminescent material.Yet the steam mould needs to increase auxiliary devices such as investment steam boiler, steam conveying pipe, steam controller when injecting products, and cost is higher; In addition, not only Installation and Debugging complexity of vapor system, its technology operation is more complicated, and general personnel can not make product without the some months training.Utilize deep fat, water heater funnel to make the large mold temperature not reach requirement, only be applicable to small mould.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of injection mold, and not only firing rate is fast for its mold heating system, cost of investment is low, and can equally produce high luminescent material product with steam mold.
The utility model is achieved in that a kind of injection mold, comprises front mould and back mould; Described front mould comprises preceding mould bases, preceding core rod and electric heating body, be provided with groove in preceding mould bases, the groove of mould bases before preceding core rod and electric heating body are positioned at, the outer surface of preceding core rod is provided with a plurality of protruding rank, described protruding rank form a plurality of protruding rank groove, electric heating body is between preceding core rod and preceding mould bases, and the protruding rank groove on the core rod before being positioned at, and is attached at the front mould core outer surface; Described back mould comprises with preceding core rod and cooperating to form the back core rod of mold cavity.
Compared with prior art, above-mentioned injection mold adopts electric heating body that preceding core rod is heated, so that the mold cavity internal surface temperature is elevated to fast temperature is set, just can eliminate injecting products clip surface waterline, need not to dispose auxiliary devices such as complicated control system and steam conveying pipe, therefore, reduce the cost of investment except that the electronic box of mould, electric heating body and control electric heating body, and adopted the generally existing knowledge of mould GPRS in injection moulding process of this electric heating body just can on dutyly to operate.
Description of drawings
Fig. 1 is the decomposing schematic representation of the injection mold that provides of the utility model embodiment.
Fig. 2 is the decomposing schematic representation of another angle of injection mold shown in Figure 1.
Fig. 3 be among Fig. 1 before the decomposing schematic representation of core rod and electric heating body.
Fig. 4 is an electric heating body and structural representation after preceding core rod cooperates among Fig. 1.
Fig. 5 is the structural representation behind the mould bases before preceding core rod, electric heating body are packed among Fig. 1.
Fig. 6 is the structural representation after forward and backward mould closes up among Fig. 1.
The specific embodiment
In order to make technical problem to be solved of the present utility model, technical scheme and beneficial effect clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Seeing also Fig. 1 to Fig. 6, is a preferred embodiment of the utility model injection mold.This injection mold comprises front mould 1 and back mould 2.Front mould 1 comprises preceding mould bases 11, preceding core rod 12 and electric heating body 13, be provided with groove 111 in preceding mould bases 11, the groove 111 of mould bases 11 before preceding core rod 12 and electric heating body 13 are positioned at, the outer surface of preceding core rod 12 is provided with a plurality of protruding rank 121, described protruding rank 121 form a plurality of protruding rank groove 122, electric heating body 13 is between preceding core rod 12 and preceding mould bases 11, and the protruding rank groove 122 on the core rod 12 before being positioned at, core rod 12 outer surfaces before being attached at tightly.Back mould 2 comprises back mould bases 21 and is positioned at the back core rod 22 of back on the mould bases 21 that back core rod 22 cooperates with preceding core rod 12, can form mold cavity.
Core rod 12 heated before above-mentioned injection mold adopted 13 pairs of electric heating bodies, so that the mold cavity internal surface temperature is elevated to fast temperature is set, just can eliminate injecting products clip surface waterline, need not to dispose auxiliary devices such as complicated control system and steam conveying pipe, therefore, reduced the cost of investment except that the electronic box of mould, electric heating body and control electric heating body, and the generally existing knowledge of mould GPRS in injection moulding process just can on dutyly be operated.
Particularly,, offer cooling water hole 112,212 respectively on preceding mould bases 11 and the back mould bases 21,, be used for preceding core rod 12 and back core rod 22 are lowered the temperature with external cooling water pipe head as Fig. 1, Fig. 2 and shown in Figure 3.Be provided with glue-feeder 113 in preceding mould bases 11, be complementary with sprue bushing with the injection machine (not shown).On the core rod 12, on the mould bases 11, when the mold injection production and processing, front mould 1 was fixed on the front template of injection machine before preceding core rod 12 was fixed on by screw before electric heating body 13 was fixed on.
Please together consult Fig. 3 and Fig. 4, be provided with three protruding rank 121 in the present embodiment, setting is extended along the lateral surface and the outer bottom of preceding core rod 12 in these protruding rank 121, electric heating body 13 comprises four electric boiling plates 131, fit in the upper and lower, left and right that these electric boiling plates 131 form along preceding core rod 12 protruding rank 121 respectively and the protruding rank groove 122A-E of bottom surface, so that the heat transmission speed is given preceding core rod 12 Fast Heating.Particularly, each electric boiling plate 131 all fits in the protruding rank groove 122A, 122B, 122E of the upper and lower and bottom surface that protruding rank 121 form, in addition, be positioned at two outermost electric boiling plates 131 and also fit in left and right protruding rank groove 122C, the 122D that protruding rank 121 form respectively.The intensity of core rod 12 before above-mentioned protruding rank 121 can be strengthened, and on protruding rank 121, offer cooling water channel 124, so that preceding core rod 12 is lowered the temperature, be convenient to the cooling of die cavity product, protruding rank groove 122 is convenient to electric heating body 13 heating.
The thickness on above-mentioned protruding rank 121 should can be protected electric heating body 13 like this greater than the thickness of electric heating body 13, squeezes bad electric heating body 13 when core rod 12 is installed in the preceding mould bases 11 before preventing.In addition, electric heating body 13 is a tight fit with cooperating of protruding rank groove 122, and the protruding rank 121 of preceding core rod 12 are coated with adiabatic gum with the side that electric heating body 13 contacts.
As the further improvement of above-mentioned embodiment, can on the medial surface of preceding mould bases 11 grooves 111, apply adiabatic gum, the thermal insulation board (not shown) perhaps is set, conduct on the preceding mould bases 11 with the heat that prevents electric heating body 13.In addition, the wall thickness of preceding core rod 12 preferably is less than or equal to 8mm, so that electric heating body 13 heats, avoids influence to add thermal effect.
When assembling above-mentioned injection mold, as shown in Figure 1, can be earlier at the groove 111 medial surfaces coating adiabatic gum of preceding mould bases 11, or increase a thermal insulation board; Then, as shown in Figure 4, electric heating body 13 is mounted in the protruding rank groove 122 of preceding core rod 12, fixes, and connect power lug; Afterwards, as shown in Figure 5, preceding core rod 12 and electric heating body 13 are mounted in the groove 111 of preceding mould bases 11 together; At last, as shown in Figure 6, the guide pillar 214 difference correspondences of four corners on the mould bases 21 of back are inserted in the guide pillar hole 114 of four corners on the preceding mould bases 11, forward and backward mould 1,2 is carried out matched moulds promptly finish assembling.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1, a kind of injection mold comprises front mould and back mould; Mould bases and preceding core rod before described front mould comprises, mould bases is provided with groove before described, the groove of mould bases before described preceding core rod is positioned at; Described back mould comprises with preceding core rod and cooperating to form the back core rod of mold cavity; It is characterized in that the outer surface of described preceding core rod is provided with a plurality of protruding rank, described protruding rank form a plurality of protruding rank groove; described front mould also has electric heating body; described electric heating body is between preceding core rod and preceding mould bases, and the protruding rank groove on the core rod before being positioned at, and is attached at the front mould core outer surface.
2, injection mold as claimed in claim 1 is characterized in that, is provided with cooling water channel in the protruding rank of described preceding core rod.
3, injection mold as claimed in claim 1, it is characterized in that, setting is extended along the lateral surface and the outer bottom of preceding core rod in the protruding rank of core rod before described, described electric heating body comprises a plurality of electric boiling plates, fits in the upper and lower, left and right that described electric boiling plate forms along the protruding rank of preceding core rod respectively and the protruding rank groove of bottom surface.
4, injection mold as claimed in claim 3, it is characterized in that, in the protruding rank groove of the upper and lower and bottom surface that the protruding rank of core rod formed before each electric boiling plate all fitted in, be positioned at two outermost electric boiling plates and also fit in the left and right protruding rank groove that the protruding rank of preceding core rod form respectively.
5, injection mold as claimed in claim 1 is characterized in that, the thickness of described electric heating body is less than the height on protruding rank.
As claim 1 or 5 described injection molds, it is characterized in that 6, described electric heating body is a tight fit with cooperating of protruding rank groove.
7, injection mold as claimed in claim 6 is characterized in that, the side that the described preceding protruding rank of core rod contact with electric heating body is coated with adiabatic gum.
8, require 1 described injection mold as claim, it is characterized in that, be coated with adiabatic gum on the medial surface of described preceding mould bases groove, perhaps be provided with thermal insulation board.
9, injection mold as claimed in claim 1 is characterized in that, the wall thickness of described preceding core rod is less than or equal to 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202358868U CN201325150Y (en) | 2008-12-31 | 2008-12-31 | An injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202358868U CN201325150Y (en) | 2008-12-31 | 2008-12-31 | An injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201325150Y true CN201325150Y (en) | 2009-10-14 |
Family
ID=41177128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202358868U Expired - Fee Related CN201325150Y (en) | 2008-12-31 | 2008-12-31 | An injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201325150Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205607A (en) * | 2011-06-09 | 2011-10-05 | 深圳创维－Rgb电子有限公司 | Die set and die for flat display device |
| CN102806644A (en) * | 2012-09-14 | 2012-12-05 | 晟扬精密模具（昆山）有限公司 | Heating device for injection machining |
-
2008
- 2008-12-31 CN CNU2008202358868U patent/CN201325150Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205607A (en) * | 2011-06-09 | 2011-10-05 | 深圳创维－Rgb电子有限公司 | Die set and die for flat display device |
| CN102806644A (en) * | 2012-09-14 | 2012-12-05 | 晟扬精密模具（昆山）有限公司 | Heating device for injection machining |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20111231 |