CN102896753A - Deformation degree control method of flat-screen television panel injection molding process - Google Patents
Deformation degree control method of flat-screen television panel injection molding process Download PDFInfo
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- CN102896753A CN102896753A CN2012104373098A CN201210437309A CN102896753A CN 102896753 A CN102896753 A CN 102896753A CN 2012104373098 A CN2012104373098 A CN 2012104373098A CN 201210437309 A CN201210437309 A CN 201210437309A CN 102896753 A CN102896753 A CN 102896753A
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Abstract
The invention discloses a deformation degree control method of a flat-screen television panel injection molding process, which is favorable for controlling the panel deformation degree so as to produce a panel in accordance with design standard. The method comprises the following steps of: comparing a panel body with a standard element and determining a deformed edge; reducing the thickness of a side wall corresponding to the deformed edge by repairing a die when the deformed edge protrudes towards the outer side of a front plate corresponding to the deformed edge and/or protrudes towards an opposite edge; and increasing the thickness of the side wall corresponding to the deformed edge by repairing the die when the deformed edge protrudes towards the inner side of the front plate corresponding to the deformed edge and/or protrudes away from the opposite edge. The deformation degree of a panel is controlled by repairing the die, when the die is changed until the produced panel meets the application requirement, stable and continuous production can be realized, so that the deformation mode of the panel can be controlled better, the finished product rate of the produced panel is obviously improved, and quality is effectively guaranteed.
Description
Technical field
The present invention relates to the molding field, relate in particular to a kind of flat-panel television surface frame injection molding process degree of deformation control method.
Background technology
In the prior art, the face frame of flat panel TV is when producing by injection molding process, certain the bar limit that the face frame body produced usually occurs deforms, example as shown in Figures 1 to 4, the limit that deforms is protruded, is deviated from opposite side towards opposite side and protrudes, protrudes towards the inboard of its front plate or protrude towards the outside of its front plate.The inboard of front plate is a side at its corresponding sidewall place namely, and as shown in Figure 2, protrude towards the inboard of its front plate on the limit that deforms; The outside of front plate is the opposite side relative with the inboard namely, and as shown in Figure 1, protrude towards the outside of front plate on the limit that deforms.More serious for flat panel TV leptoprosopy frame above-mentioned metaboly when producing.The width that this leptoprosopy frame is each front plate is less than or equal to a kind of the frame of 20mm.Because the width of front plate less than 20mm, therefore is easy to occur the distortion of the above-mentioned type.Therefore and the leptoprosopy frame is present development trend, is necessary the method for deflection how to control the above-mentioned type is furtherd investigate.In the prior art, take rear rectification mode for the distortion that overcomes above-mentioned several forms and come the product of producing is proofreaied and correct.But rear the rectification owing to be that external force is corrected by force caused the damage of this leptoprosopy frame easily, and the leptoprosopy frame after correcting simultaneously recovers distortion after placing easily a period of time.And, because some its degree of deformation of leptoprosopy frame is too large, can't process by the rectification mode.
Summary of the invention
But the technical problem that the present invention solves provides the flat-panel television surface frame injection molding process degree of deformation control method that a kind of opposite frame deformation extent is controlled.
The technical solution adopted for the present invention to solve the technical problems is: flat-panel television surface frame injection molding process degree of deformation control method, comprise face frame body, face frame body comprises the top, following, the left side and the right, each limit all comprises front plate and sidewall, and face frame body is compared with standard component, determines the limit that deforms:
When protrude towards the outside of its corresponding front plate on the limit that deforms and/or towards its opposite side, protruding, reduce the thickness of sidewall corresponding to the limit that deforms by repairing a die;
When protrude towards the inboard of its corresponding front plate on the limit that deforms and/or deviate from its opposite side when protruding, increase the thickness of sidewall corresponding to the limit that deforms by repairing a die.
Further be: the width of the front plate that the limit that deforms is corresponding is less than or equal to 20mm.
In the said method, increasing or reduce the sidewall thickness appointment by repairing a die is that mould is made amendment, the thickness of the mold cavity that sidewall is corresponding increases or reduces increases or reduces sidewall thickness accordingly, the contraction state of product when injection mo(u)lding changed, thereby can reduce the protrusion degree, namely can control preferably the deformation extent of the above-mentioned type.The process of repairing a die can be carried out gradually, determines a sidewall thickness recruitment or reduction at every turn, and then repairing a die through many experiments gets final product.
The invention has the beneficial effects as follows: the present invention is by repairing a die the deformation extent of chain of command frame, after mould is modified to the face frame of producing and satisfies instructions for use, can produce continuously by stable carrying out, thereby the above-mentioned mode of texturing of opposite frame is carried out good control preferably, the yield rate of the face frame of producing significantly improves, and quality is effectively guaranteed.Method applying flexible of the present invention can be adjusted separately the limit that deforms, and for example certain bar limit deforms in the face frame, then can adjust this limit.And, proof by experiment, when the width of front plate corresponding to the limit that deforms during less than or equal to 20mm, method of the present invention is very remarkable to the control ability of its deformation extent.Namely method of the present invention especially is fit to the deformation extent of leptoprosopy frame is controlled.
Description of drawings
Fig. 1 is the schematic diagram that protrude towards the outside of its corresponding front plate on the limit that deforms;
Fig. 2 is the schematic diagram that protrude towards the inboard of its corresponding front plate on the limit that deforms;
Fig. 3 is that the limit that deforms deviates from the schematic diagram that its opposite side protrudes;
Fig. 4 is the schematic diagram that protrude towards its opposite side on the limit that deforms;
Fig. 5 is the cross sectional representation of face frame body;
Be labeled as among the figure: front plate 1, sidewall 2, width L, thickness S.
The specific embodiment
The present invention is further described below in conjunction with the drawings and specific embodiments.
To shown in Figure 5, flat-panel television surface frame injection molding process degree of deformation control method of the present invention comprises face frame body such as Fig. 1, face frame body comprises the top, bottom, the left side and the right, each limit all comprises front plate and sidewall, and face frame body is compared with standard component, determines the limit that deforms:
When protrude towards the outside of its corresponding front plate 1 on the limit that deforms and/or towards its opposite side, protruding, reduce the thickness S of sidewall 2 corresponding to the limit that deforms by repairing a die.Above-mentionedly comprise three kinds of situations: a kind of is that the limit that deforms is to protrude towards the outside of its corresponding front plate 1, for example shown in Figure 1; The second is that the limit that deforms is to protrude towards its opposite side, and is for example shown in Figure 4; The third situation is the combination of above-mentioned two situations.Behind the attenuate when moulding the shrinkage factor of sidewall contrast front plate diminish before will be than attenuate, namely identical condition of molding lower wall size will increase, make the trend of the limit generation reversal deformation that deforms, thereby can reduce its deformation extent.
When protrude towards the inboard of its corresponding front plate 1 on the limit that deforms and/or deviate from its opposite side when protruding, increase the thickness S of sidewall 2 corresponding to the limit that deforms by repairing a die.Above-mentionedly comprise three kinds of situations: a kind of is that protrude towards the inboard of its corresponding front plate 1 on the limit that deforms, for example shown in Figure 2; The second is that the limit that deforms deviates from its opposite side protrusion, and is for example shown in Figure 3; The third situation is the combination of above-mentioned two situations.The shrinkage factor of sidewall contrast front plate will be than becoming large before thickening when moulding after thickening, and namely identical condition of molding lower wall size will reduce, and make the limit that deforms produce the trend of reversal deformation, thereby can reduce its deformation extent.
Further be, prove by experiment when the width L of the front plate on certain bar limit of frame is no more than 20mm face to face, adopt the said method effect very remarkable.Repair a die by limited number of time and just can produce the face frame that meets designing requirement.
In order to prove that preferably method of the present invention can better control the distortion of the above-mentioned type, done following experiment.Former front thickness of slab 3.2mm on the flat-panel television surface frame, side thickness 1.8mm has 2 limits distortion shown in Figure 2 to occur after the formed product, and degree of deformation is 25mm, and distortion shown in Figure 3 appears in these 2 limits simultaneously, and degree of deformation is 3.5mm, and such face frame does not satisfy the demands; Then according to said method of the present invention, the sidewall thickness that the limit that deforms is corresponding is increased to 2.5mm, and after the formed product, degree of deformation shown in Figure 2 is reduced to 8mm, and degree of deformation shown in Figure 3 is reduced to 1.5mm, meets design requirement fully.
Claims (2)
1. flat-panel television surface frame injection molding process degree of deformation control method comprises face frame body, and face frame body comprises the top, bottom, and the left side and the right, each limit all comprise front plate (1) and sidewall (2), it is characterized in that:
Face frame body is compared with standard component, is determined the limit that deforms:
When protrude towards the outside of its corresponding front plate (1) on the limit that deforms and/or towards its opposite side, protruding, reduce the thickness (S) of sidewall (2) corresponding to the limit that deforms by repairing a die;
When protrude towards the inboard of its corresponding front plate (1) on the limit that deforms and/or deviate from its opposite side when protruding, increase the thickness (S) of sidewall (2) corresponding to the limit that deforms by repairing a die.
2. flat-panel television surface frame injection molding process degree of deformation control method as claimed in claim 1, it is characterized in that: the width of the front plate that the limit that deforms is corresponding (L) is less than or equal to 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210437309.8A CN102896753B (en) | 2012-11-06 | 2012-11-06 | Deformation degree control method of flat-screen television panel injection molding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210437309.8A CN102896753B (en) | 2012-11-06 | 2012-11-06 | Deformation degree control method of flat-screen television panel injection molding process |
Publications (2)
| Publication Number | Publication Date |
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| CN102896753A true CN102896753A (en) | 2013-01-30 |
| CN102896753B CN102896753B (en) | 2015-02-11 |
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| CN201210437309.8A Expired - Fee Related CN102896753B (en) | 2012-11-06 | 2012-11-06 | Deformation degree control method of flat-screen television panel injection molding process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106738599A (en) * | 2017-02-23 | 2017-05-31 | 佛山市顺德区百年科技有限公司 | The processing method of irregular elongated injecting products, injection mold and product |
| CN108312440A (en) * | 2018-04-24 | 2018-07-24 | 惠州市泰信精密部件有限公司 | The preparation method of mold, handset touch panel frame and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075269A (en) * | 2007-06-22 | 2007-11-21 | 广东工业大学 | Method for designing mould cavity |
| CN101746021A (en) * | 2008-12-04 | 2010-06-23 | 太仓求精塑模有限公司 | Injection molding method for front frame shell of television or display screen |
-
2012
- 2012-11-06 CN CN201210437309.8A patent/CN102896753B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075269A (en) * | 2007-06-22 | 2007-11-21 | 广东工业大学 | Method for designing mould cavity |
| CN101746021A (en) * | 2008-12-04 | 2010-06-23 | 太仓求精塑模有限公司 | Injection molding method for front frame shell of television or display screen |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106738599A (en) * | 2017-02-23 | 2017-05-31 | 佛山市顺德区百年科技有限公司 | The processing method of irregular elongated injecting products, injection mold and product |
| CN106738599B (en) * | 2017-02-23 | 2019-10-15 | 佛山市顺德区百年科技有限公司 | Processing method, injection mold and the product of irregular elongated injecting products |
| CN108312440A (en) * | 2018-04-24 | 2018-07-24 | 惠州市泰信精密部件有限公司 | The preparation method of mold, handset touch panel frame and preparation method thereof |
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| CN102896753B (en) | 2015-02-11 |
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