CN105437452A - Injection molding structure for preventing shrinkage defects - Google Patents
Injection molding structure for preventing shrinkage defects Download PDFInfo
- Publication number
- CN105437452A CN105437452A CN201511028208.5A CN201511028208A CN105437452A CN 105437452 A CN105437452 A CN 105437452A CN 201511028208 A CN201511028208 A CN 201511028208A CN 105437452 A CN105437452 A CN 105437452A
- Authority
- CN
- China
- Prior art keywords
- main body
- injection molding
- osteomere
- connecting portion
- thickness
- 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
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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
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to the injection molding field, in particular to an injection molding structure for preventing shrinkage defects. The injection molding structure for preventing the shrinkage defects comprises a main body and a stone part which is positioned below the main body and is connected to the main body, wherein the thickness of a connecting part of the main body and the stone part is smaller than that of the main body. The width of the connecting part of the main body and the stone part is equal to the thickness of the connecting part on the main body. By adopting the injection molding structure, when parts are integrally cooled, inner stress inside the parts is balanced, so that the shrinkage defects are improved, and the appearances of the parts are more attractive when the parts meet requirements. The injection molding structure is simple in structure, and extra injection molding equipment and injection molding conditions are not required, so that the production cost is reduced.
Description
Technical field
The present invention relates to injection molding art, be specifically related to a kind of injection structure preventing shrink defects.
Background technology
At present, injection mo(u)lding is the important production ways of one of industrial products.As shown in Figure 1, but if the connection between part is dealt with improperly, obvious shrink mark can be caused.Occur that the reason of shrink mark is when the cooling of part entirety, the first cooling meat in other positions of part, the connecting portion between part finally completes cooling, due to internal stress, causes occurring shrinking at connecting portion.For this situation, existing structure often adopts following scheme to solve: the thickness 1, increasing main body, but the weight of part will increase like this, and cost also can increase.2, reduce the width of osteomere, osteomere partial action and function can be lost like this.3, during process debugging, extend pressurize, but can cause the defect of other positions due to pressurization, such as Edge texture is pulled.And due to dwell time increase, molding cycle increases, and cost also increases thereupon.
Summary of the invention
The object of the present invention is to provide the injection structure that a kind of structure is simple, can prevent shrink defects.
In order to achieve the above object, the technical solution used in the present invention is: a kind of injection structure preventing shrink defects, comprises main body, is positioned at the osteomere be connected below main body and with main body, and main body is less than body thickness with the thickness of osteomere connecting portion.
Prevent an injection structure for shrink defects as above, further illustrate into, described main body is provided with groove with osteomere connecting portion.
Prevent an injection structure for shrink defects as above, further illustrate into, the width of described main body and osteomere connecting portion equals the thickness of connecting portion in main body.
The invention has the beneficial effects as follows: adopt this injection structure, when can make the cooling of part entirety, reach balanced in the internal stress of inside parts, thus shrink defects improves, and the while of making part satisfactory, makes External Shape more attractive in appearance.This structure is simple, does not need extra injection-moulding device and injecting condition, thus saves production cost.
Accompanying drawing explanation
Fig. 1 is existing injection structure schematic diagram.
Fig. 2 is embodiment of the present invention structural representation.
In figure: 1, main body; 2, osteomere; The thickness of connecting portion in h, main body; The width of d, connecting portion.
Detailed description of the invention
Below in conjunction with accompanying drawing, elaboration detailed is further done to the embodiment of the present invention.
As shown in Figure 2, a kind of injection structure preventing shrink defects provided by the invention, comprise main body 1, be positioned at the osteomere 2 be connected below main body 1 and with main body 1, the connection shape of main body 1 and osteomere 2 is not limited and is determined, can be such as T-shaped between main body 1 and osteomere 2, illustrate for this figure here.Be provided with groove at the connecting portion of main body 1, make main body 1 is less than the thickness of main body 1 with the thickness h of osteomere 2 connecting portion, thus make part when cooling, the internal stress of inside parts reaches balanced.Preferred embodiment is, main body 1 equals the thickness h of connecting portion in main body 1 with the width d of osteomere 2 connecting portion, and namely the width d of connecting portion is osteomere 2 link projection width on the body 1.This structure is simple, does not need extra injection-moulding device and injecting condition, thus saves production cost.And by adopting this injection structure, when can make the cooling of part entirety, reach balanced in the internal stress of inside parts, thus shrink defects improves, and the while of making part satisfactory, makes External Shape more attractive in appearance.
The present invention is not limited to above-mentioned example, and in claims limited range of the present invention, the various distortion that those skilled in the art can make without creative work or amendment are all by the protection of this patent.
Claims (3)
1. prevent an injection structure for shrink defects, comprise main body, be positioned at the osteomere be connected below main body and with main body, it is characterized in that: main body is less than body thickness with the thickness of osteomere connecting portion.
2. a kind of injection structure preventing shrink defects according to claim 1, is characterized in that: described main body is provided with groove with osteomere connecting portion.
3. a kind of injection structure preventing shrink defects according to claim 2, is characterized in that: the width of described main body and osteomere connecting portion equals the thickness of connecting portion in main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511028208.5A CN105437452A (en) | 2015-12-31 | 2015-12-31 | Injection molding structure for preventing shrinkage defects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511028208.5A CN105437452A (en) | 2015-12-31 | 2015-12-31 | Injection molding structure for preventing shrinkage defects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105437452A true CN105437452A (en) | 2016-03-30 |
Family
ID=55548308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511028208.5A Pending CN105437452A (en) | 2015-12-31 | 2015-12-31 | Injection molding structure for preventing shrinkage defects |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105437452A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110524783A (en) * | 2019-08-31 | 2019-12-03 | 厦门芒娅贸易有限公司 | A kind of thermoplastic plastics shaping equipment based on electroluminescent principle |
-
2015
- 2015-12-31 CN CN201511028208.5A patent/CN105437452A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110524783A (en) * | 2019-08-31 | 2019-12-03 | 厦门芒娅贸易有限公司 | A kind of thermoplastic plastics shaping equipment based on electroluminescent principle |
| CN110524783B (en) * | 2019-08-31 | 2021-06-15 | 江苏具鑫包装科技有限公司 | Thermoplastic molding equipment based on electroluminescence principle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160330 |
|
| WD01 | Invention patent application deemed withdrawn after publication |