CN102514040B - Method for forming lamp PET (Polyethylene Terephthalate) reflection part - Google Patents
Method for forming lamp PET (Polyethylene Terephthalate) reflection part Download PDFInfo
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- CN102514040B CN102514040B CN201110413948.6A CN201110413948A CN102514040B CN 102514040 B CN102514040 B CN 102514040B CN 201110413948 A CN201110413948 A CN 201110413948A CN 102514040 B CN102514040 B CN 102514040B
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Abstract
The invention relates to a method for forming lamp PET (Polyethylene Terephthalate) reflection part. In the method, stamping die forming is employed, and the die comprises a concave die, a convex die, a convex die sleeve, a tension spring and a tension transmission column, wherein the concave die comprises a concave die matching plane and a concave die cavity arranged on the concave die matching plane, the convex die sleeve and the convex die are in moving guide match, the convex die sleeve comprises an annular port plane which is matched with the concave die, a top plate and a tension transmission column hole arranged on the top plate, the convex die comprises a convex die matching plane and a convex die head arranged on the convex die matching plane, the convex die side A opposite to one side of the convex die head is connected with the tension transmission column, the tension spring is connected with the inner side of the top plate and the convex die side A, the tension transmission column penetrates through the tension transmission column hole and extends outsides, the convex die head is arranged just opposite to the concave die cavity, and the convex die, the convex die sleeve and the concave die can carry out opposite-direction combination matching motion and trailing-direction separation motion. The method comprises the steps of heating sheets and the dies, opening the dies, moving the heated sheets to the matching plane of the die on the lower side, moving the die on the upper side downwards so as to locate the sheet, carrying out stamping and dwelling, opening the dies, taking out the sheet, processing an installation hole of a luminophor, and cutting and trimming for the installation hole. With the adoption of the invention, the PET sheet can be prevented from squashing and tearing, thereby the processing quality of a PET reflection part is ensured.
Description
Technical field
The present invention relates to a kind of light fixture reflecting element forming method, be specifically related to a kind of light fixture PET reflecting element forming method.
Background technology
Fretting map PET (polyethylene terephthalate PETG) launches sheet material inside containing diameter below 10 μm, and number of bubbles density is 10
9individual/cm
3above a large amount of bubbles, thus present milky, and well total reflection and diffuse reflection phenomenon are formed to light, its total reflectivity more than 99%, diffuse reflectance 96%, be used in LED lamp and display backlight field in a large number.
But, due to fretting map PET launch sheet material plasticity, toughness is poor, fragility is large, and sheet material easily occurs in reflector plate processing and tears phenomenon, cause PET sheet emitting difficulty of processing large, percent defective is high.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of light fixture PET reflecting element forming method, overcomes shaping difficulty when existing method uses PET sheet to manufacture reflecting element large, the defect that percent defective is high.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of light fixture PET reflecting element forming method, it is characterized in that,
Use following reflector plate diel shaping light fixture PET reflecting element, this reflector plate diel comprise match die, punch, punch case, extension spring and force-transmitting pole; Described die comprises the die cooperation plane being positioned at its counterface, the matrix cavity be arranged in this die cooperation plane, the power transmission post holes that this punch case comprises the inner surface coordinated with described punch mobile guide, the ring port plane coordinating the outer shroud of plane to match with described die, top board and is arranged on this top board; Described punch comprises the side surface be slidably matched with punch case, the punch being positioned at punch counterface coordinates plane, the punch head be arranged in this punch cooperation plane, this punch lead with described punch case coordinate, side that this punch arranges punch head opposing is connected with force-transmitting pole, described extension spring connects inside described punch case top board and punch arranges the opposing side of punch head, and described force-transmitting pole stretches out outside punch case through the power transmission post holes of described punch case; Described punch head and described matrix cavity just right; Described punch, punch case and described die can merge routing motion and disengaging movement dorsad in opposite directions;
Described method comprises the steps:
S1, by PET sheet heater temperature to 185 DEG C to 215 DEG C of scopes, PET sheet stops the heat time and is more than or equal to 2 minutes, is less than or equal to 5 minutes in the thermal treatment zone of PET sheet heater; By reflector plate diel temperature to 200 DEG C to 220 DEG C of scopes;
S2, reflector plate diel punch, punch case are separated dorsad with die, the PET sheet of heating is sent to be positioned at lower die between punch case with die coordinate in plane, move down side mold and PET sheet be pressed in the outer loop mapping that lower die coordinates plane;
PET sheet is pressed in matrix cavity by S3, mobile punch;
S4, punch, punch case are separated with die;
S5, taking-up punching press PET sheet, process illuminator installing hole in the middle part of each groove stamped out;
S6, cut deburring.
In light fixture PET reflecting element forming method of the present invention, described die is positioned at below, matrix cavity opening upwards, and described punch, punch case are positioned at top, and the die of described reflector plate diel is fixed; In described method step:
S2, punch case that the PET sheet of heating is sent to between die and be positioned at die coordinate in plane, move down punch case and PET sheet be pressed in the outer loop mapping that die coordinates plane;
S3, move down punch PET sheet is pressed in matrix cavity;
S4, punch, punch case move.
In light fixture PET reflecting element forming method of the present invention, described die is positioned at top, Open Side Down for matrix cavity, and described punch, punch case are positioned at below, and described punch case is fixed; In described method step:
S2, punch case that the PET sheet of heating is sent to between die and be positioned at punch case coordinate in plane, move down die and PET sheet be pressed in the outer loop mapping that die coordinates plane;
S3, on move punch PET sheet be pressed in matrix cavity;
S4, punch move down, die moves.
In light fixture PET reflecting element forming method of the present invention, the heat time of PET sheet is 3 minutes.
Implement light fixture PET reflecting element forming method of the present invention, compared with the prior art, its beneficial effect is:
1. the method adopts mould parts deadweight to position PET sheet, both the straight consistency in the edge of PET sheet in punch forming process can have been ensured, also can ensure that PET sheet is not killed by mould, in punching course, PET sheet can compensate according to the intrusion of punch is mobile in mould, prevents PET sheet from being crushed and tears;
2. heating PET sheet and mould before punching press, and ensure that mold temperature is a little more than sheet temperature, the plasticity of PET sheet can be provided, ensure the crudy of PET reflecting element.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the PET reflecting element semi-finished product top view using light fixture PET reflecting element forming method of the present invention shaping.
Fig. 2 is processing mold schematic diagram in light fixture PET reflecting element forming method of the present invention.
Fig. 3 is the flow chart of a kind of embodiment of light fixture PET reflecting element forming method of the present invention.
Detailed description of the invention
Embodiment one
As shown in Figure 2, to adopt following reflector plate diel to carry out light fixture PET reflecting element shaping for light fixture PET reflecting element forming method of the present invention.This reflector plate diel comprise match die 2, punch 3, punch case 4, extension spring 6 and force-transmitting pole 5.Die 2 comprises the die cooperation plane being positioned at its counterface, the matrix cavity 21 be arranged in this die cooperation plane.The power transmission post holes that punch case 4 comprises the inner surface 41 coordinated with punch 3 mobile guide, the ring port plane coordinating the outer shroud of plane to match with die, top board 42 and is arranged on this top board.Punch 3 comprises the side surface be slidably matched with punch case, and the punch being positioned at punch counterface coordinates plane, the punch head 31 be arranged in this punch cooperation plane.Punch 3 lead with punch case 4 coordinate, the punch side A32 relative with arranging punch head 31 side be connected with force-transmitting pole 5, extension spring 6 connects inside punch case top board 42 and punch side A32, and force-transmitting pole 5 stretches out outside punch case through the power transmission post holes of punch case 4.Punch head 31 is just right with matrix cavity 21, and punch 3, punch case 4 can merge routing motion and disengaging movement dorsad in opposite directions with die 2.
In the present embodiment, die 2 is positioned at below, matrix cavity 21 opening upwards, and punch 3, punch case 4 are positioned at top, and die 2 is fixed.
As shown in Figure 3, light fixture PET reflecting element forming method of the present invention comprises the steps:
The first, PET sheet heater temperature T1 is warming up to 185 DEG C≤T1≤215 DEG C scope, PET sheet stops heat time T3 and meets 2 minutes≤T3≤5 minute in the thermal treatment zone of PET sheet heater; Reflector plate diel temperature T2 is warming up to 200 DEG C≤T2≤220 DEG C;
The second, reflector plate diel punch 3, punch case 4 are separated dorsad with die 2, the PET sheet 1 of heating to be sent between punch case 4 with die 2 and be positioned at die 2 coordinate in plane, move down punch case 4 and PET sheet 1 be pressed in the outer loop mapping that die 2 coordinates plane;
Three, moving down punch 3 is pressed in matrix cavity 21 by PET sheet 1;
Four, punch 3, punch case 4 move make punch 3, punch case 4 is separated with die 2;
Five, take out punching press PET sheet 1, in the middle part of each groove stamped out, process illuminator installing hole 11;
Six, deburring is cut.
The half-finished a kind of embodiment of PET reflecting element using light fixture PET reflecting element forming method of the present invention shaping as shown in Figure 1.In other embodiments, as required, PET reflecting element semi-finished product can adopt a groove, two grooves, three designs such as groove or multiple grooves.
Embodiment two
The present embodiment is substantially identical with embodiment one, and difference is:
The die 2 of reflector plate diel is positioned at top, Open Side Down for matrix cavity 21, and punch 3, punch case 4 are positioned at below, are fixed by punch case 4.
Difference in method step is:
Second step, punch case 4 that the PET sheet 1 of heating is sent to between die 2 and be positioned at punch case 4 coordinate in plane, move down die 2 and PET sheet 1 be pressed in the outer loop mapping that die 2 coordinates plane;
3rd step, on move punch 3 PET sheet 1 be pressed in matrix cavity 21;
4th step, punch 3 move down, die 2 moves make punch 3, punch case 4 is separated with die 2.
In the various embodiments described above, experiment proves, 3 minutes sheet material heat times, can ensure that follow-up punching course obtains the PET reflecting element of high-quality.
Claims (4)
1. a light fixture PET reflecting element forming method, is characterized in that,
Use following reflector plate diel shaping light fixture PET reflecting element, this reflector plate diel comprise match die, punch, punch case, extension spring and force-transmitting pole; Described die comprises the die cooperation plane being positioned at its counterface, the matrix cavity be arranged in this die cooperation plane, the power transmission post holes that this punch case comprises the inner surface coordinated with described punch mobile guide, the ring port plane coordinating the outer shroud of plane to match with described die, top board and is arranged on this top board; Described punch comprises the side surface be slidably matched with punch case, the punch being positioned at punch counterface coordinates plane, the punch head be arranged in this punch cooperation plane, this punch lead with described punch case coordinate, side that this punch arranges punch head opposing is connected with force-transmitting pole, described extension spring connects inside described punch case top board and punch arranges the opposing side of punch head, and described force-transmitting pole stretches out outside punch case through the power transmission post holes of described punch case; Described punch head and described matrix cavity just right; Described punch, punch case and described die can merge routing motion and disengaging movement dorsad in opposite directions;
Described method comprises the steps:
S1, by PET sheet heater temperature to 185 DEG C to 215 DEG C of scopes, PET sheet stops the heat time and is more than or equal to 2 minutes, is less than or equal to 5 minutes in the thermal treatment zone of PET sheet heater; By reflector plate diel temperature to 200 DEG C to 220 DEG C of scopes;
S2, reflector plate diel punch, punch case are separated dorsad with die, the PET sheet of heating is sent to be positioned at lower die between punch case with die coordinate in plane, move down side mold and PET sheet be pressed in the outer loop mapping that lower die coordinates plane;
PET sheet is pressed in matrix cavity by S3, mobile punch;
S4, punch, punch case are separated with die;
S5, taking-up punching press PET sheet, process illuminator installing hole in the middle part of each groove stamped out;
S6, cut deburring.
2. light fixture PET reflecting element forming method as claimed in claim 1, is characterized in that, described die is positioned at below, matrix cavity opening upwards, and described punch, punch case are positioned at top, and the die of described reflector plate diel is fixed; In described method step:
S2, punch case that the PET sheet of heating is sent to between die and be positioned at die coordinate in plane, move down punch case and PET sheet be pressed in the outer loop mapping that die coordinates plane;
S3, move down punch PET sheet is pressed in matrix cavity;
S4, punch, punch case move.
3. light fixture PET reflecting element forming method as claimed in claim 2, is characterized in that, described die is positioned at top, Open Side Down for matrix cavity, and described punch, punch case are positioned at below, and described punch case is fixed; In described method step:
S2, punch case that the PET sheet of heating is sent to between die and be positioned at punch case coordinate in plane, move down die and PET sheet be pressed in the outer loop mapping that die coordinates plane;
S3, on move punch PET sheet be pressed in matrix cavity;
S4, punch move down, die moves.
4. the light fixture PET reflecting element forming method as described in one of claims 1 to 3, is characterized in that, the heat time of PET sheet is 3 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110413948.6A CN102514040B (en) | 2011-12-13 | 2011-12-13 | Method for forming lamp PET (Polyethylene Terephthalate) reflection part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110413948.6A CN102514040B (en) | 2011-12-13 | 2011-12-13 | Method for forming lamp PET (Polyethylene Terephthalate) reflection part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102514040A CN102514040A (en) | 2012-06-27 |
| CN102514040B true CN102514040B (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110413948.6A Active CN102514040B (en) | 2011-12-13 | 2011-12-13 | Method for forming lamp PET (Polyethylene Terephthalate) reflection part |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103009432B (en) * | 2012-12-11 | 2015-07-01 | 四川海英电子科技有限公司 | PCB (printed circuit board) stamping and V-cutting production method |
| CN108044689B (en) * | 2018-01-15 | 2023-11-21 | 广州达意隆包装机械股份有限公司 | Sheet conveying die |
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| EP1961708A1 (en) * | 2007-01-24 | 2008-08-27 | Schott AG | Method for manufacturing reflectors made of glass or glass ceramics |
| CN101299116A (en) * | 2008-07-04 | 2008-11-05 | 友达光电股份有限公司 | Backlight module |
| CN101308286A (en) * | 2008-07-09 | 2008-11-19 | 友达光电股份有限公司 | Backlight module group and reflective cover manufacture method and mould for manufacturing thermoplastic reflective cover |
| CN101531047A (en) * | 2008-03-13 | 2009-09-16 | 荣晋精密科技股份有限公司 | Method for producing lamp reflector of side light typed backlight module and lamp reflector thereof |
| CN101788126A (en) * | 2009-09-28 | 2010-07-28 | 达运精密工业（厦门）有限公司 | Preparation method and device of reflecting housing of backlight module |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003266530A (en) * | 2002-03-18 | 2003-09-24 | Sumitomo Bakelite Co Ltd | Reflecting plate component for illuminator |
| CN201283396Y (en) * | 2008-10-23 | 2009-08-05 | 浙江科技学院 | Deep-drawing mold of concave die without flange edge |
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2011
- 2011-12-13 CN CN201110413948.6A patent/CN102514040B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1961708A1 (en) * | 2007-01-24 | 2008-08-27 | Schott AG | Method for manufacturing reflectors made of glass or glass ceramics |
| CN101531047A (en) * | 2008-03-13 | 2009-09-16 | 荣晋精密科技股份有限公司 | Method for producing lamp reflector of side light typed backlight module and lamp reflector thereof |
| CN101299116A (en) * | 2008-07-04 | 2008-11-05 | 友达光电股份有限公司 | Backlight module |
| CN101308286A (en) * | 2008-07-09 | 2008-11-19 | 友达光电股份有限公司 | Backlight module group and reflective cover manufacture method and mould for manufacturing thermoplastic reflective cover |
| CN101788126A (en) * | 2009-09-28 | 2010-07-28 | 达运精密工业（厦门）有限公司 | Preparation method and device of reflecting housing of backlight module |
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| CN102514040A (en) | 2012-06-27 |
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Effective date of registration: 20151204 Address after: 9, building 901, building 518000, building A, Hua Han building, 16 Lang Shan Road, Shenzhen, Guangdong, Nanshan District Patentee after: SHENZHEN HUAHAN SCIENCE & TECHNOLOGY HOLDING CO., LTD. Address before: No. 16 Hua Han Industrial Park, Pingshan New District Pingshan Jinniu Road Shenzhen city Guangdong province 518118 Patentee before: Shenzhen Huahan New Energy & Material Co.,Ltd. |