CN101288992B - Processing die of dual-color plastic chair and its processing method - Google Patents
Processing die of dual-color plastic chair and its processing method Download PDFInfo
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- CN101288992B CN101288992B CN2007100681900A CN200710068190A CN101288992B CN 101288992 B CN101288992 B CN 101288992B CN 2007100681900 A CN2007100681900 A CN 2007100681900A CN 200710068190 A CN200710068190 A CN 200710068190A CN 101288992 B CN101288992 B CN 101288992B
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- 239000004033 plastic Substances 0.000 title claims abstract description 88
- 229920003023 plastic Polymers 0.000 title claims abstract description 88
- 238000003672 processing method Methods 0.000 title claims description 12
- 238000002347 injection Methods 0.000 claims abstract description 31
- 239000007924 injection Substances 0.000 claims abstract description 31
- 238000001746 injection moulding Methods 0.000 claims description 48
- 239000002991 molded plastic Substances 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 3
- 239000003086 colorant Substances 0.000 abstract description 11
- 238000005266 casting Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 20
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 208000002925 dental caries Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000000071 blow moulding Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
A processing die for a double-color plastic chair is provided with a casting system, a die cavity, a mold core and a demoulding system; a mould cavity of a product is arranged between the die cavity and the mold core. The processing die of the invention is characterized in that the mold core is provided with a movable embedded block which is connected with an inclined slide block A; the inclined slide block A is contacted with an inclined slide block B; the slide block B is driven by a pushing air cylinder; the die cavity is provided with two pouring heads; an opening of a first pouring head is arranged on the back surface of the die cavity and on the outer layer of an injection plastic chair; the opening of a second pouring head is arranged on the end surface of the die cavity and on theinner layer of the injection plastic chair. A seat plate and a backrest of the plastic chair manufactured by the die of the invention are compounded by the inner layer and the outer layer with two different colors; the limit of the colors is clear; compared with a single color chair, the appearance of the invention is beautiful; the product grade is high; the thickness of the product is large; themechanical intensity is high and the processing die for a double-color plastic chair of the invention can be applied in an office and daily life.
Description
Technical field
The present invention relates to the processing mold of dual-color plastic chair, and the processing method of dual-color plastic chair, belong to the manufacture field of plastic products.
Background technology
Plastic chair can be divided into overall plastic plastic chair and metal foot rest plastic chair, and described overall plastic plastic chair is seat board, backrest and integral molded plastic or blow moldings such as chair pin and handrail; Described metal foot rest plastic chair be seat board, backrest through injection mo(u)lding, metallic chair pin or base are installed under seat board.The seat board of existing metal foot rest plastic chair and backrest are because be single injection-molded, so all be single layer structure, solid color, monochromatic plastic chair is owing to the color and luster dullness, and profile is not attractive in appearance, and product specification is low, lacks competitiveness, deficiency in economic performance on market.If but produce dual-color plastic chair, need two injecting heads, a kind of color of first injection moulding, the then another kind of color of injection moulding again.Can have double-shot moulding such as Chinese patent 95206550.9 is made of extrusion screw rod, communicating pipe and special nozzle, driving screw is released first colorant during work, and the subsidiary engine screw rod is released second colorant, two kinds of fusion colorants inject die cavity by same special-purpose nozzle, inject double-colored goods, therefore the goods that come out are colour mixture, promptly are kind of unordered color change at random, do not reach two kinds of color requirements that the division is clearly demarcated.And for example No. 01228678.8, Chinese patent, adopts two to be its corresponding respectively two the parallel nozzles of the machine barrel that is set up in parallel and to be connected and to form the double color injection device, because two nozzles on same machine, exist the device fabrication complexity, invests shortcomings such as big.
Summary of the invention
The objective of the invention is in order to overcome the shortcoming of prior art, it is double-colored to provide a kind of seat board that makes the plastic chair of making one and backrest to have, and the color boundary is clearly demarcated, the processing mold of the dual-color plastic chair that functional reliability is good.
Two of purpose of the present invention provides the processing method of this kind plastic chair, adopts the common injection machine transformation of the way, and low equipment investment guarantee the goods rapid shaping, and moulding is perfect, good looking appearance, and production cost is low.
The technical scheme of the processing mold of dual-color plastic chair of the present invention is: running gate system, die cavity and core, dismoulding system are arranged, the die cavity that goods are arranged between die cavity and the core, in the described core loose plug is arranged, loose plug links to each other with the angled-lift splits first, the angled-lift splits first contacts with angled-lift splits second, and angled-lift splits second drives by promoting cylinder; Described die cavity has two cast gates, it is characterized in that the first cast gate opening is positioned at the die cavity back side, the outside wall surface that the spacing of first cast gate starts from die cavity arrives the mould intracavity wall face, the skin of injection-moulded plastic chair, the second cast gate opening is positioned at the end face of die cavity, the spacing of second cast gate starts from the center of the end wall surface arrival die cavity of die cavity, the internal layer of injection-moulded plastic chair.
The processing mold of dual-color plastic chair of the present invention, its loose plug in fact also is the part of core, rely on moving of loose plug to produce two die cavitys, be respectively the outer die cavity and the internal layer die cavity of plastic chair, make the skin of plastic chair to the molten plastic of a kind of color of outer cavity injection from first cast gate, make the internal layer of plastic chair from second cast gate to the molten plastic of the another kind of color of internal layer cavity injection.The outside wall surface that the spacing of its first cast gate starts from die cavity arrives the mould intracavity wall face, and the spacing of second cast gate starts from the center of the end wall surface arrival die cavity of die cavity, is convenient to cast, and produces two kinds of plastic chair skin and internal layers that color limit is clearly demarcated.Make the plastic chair of one by this mould, its seat board is mutually compound with skin by the internal layer of two kinds of different colours with backrest, and the color boundary is clearly demarcated, compare good looking appearance, product specification height with monochromatic chair, and products thickness is big, and the mechanical strength height can be widely used in office and the daily life.And, improve the market competitiveness because the different colours combination can be given old product new life.
The processing mold of dual-color plastic chair of the present invention, its described second cast gate is installed in the hot flow path, thereby can avoid making molten plastic cooling influence mobile because of running channel is oversize, helps shortening molding cycle, improves quality of item.
The processing method of dual-color plastic chair of the present invention is characterized in that:
A, an injection moulding main frame is arranged, comprise injection member, matched moulds parts, fuselage, control system and feeding device, mould is installed in the injection moulding main frame, it is characterized in that the secondary machine of injection moulding being installed in a side of injection moulding main frame, the secondary machine of injection moulding has injection member, screw rod, barrel and nozzle, the center line of the secondary machine of injection moulding and the center line of injection moulding main frame are orthogonal to become 90 °, and the nozzle of injection moulding pair machine faces the mould in the injection moulding main frame;
B, promotion cylinder start, the compression piston bar, driving angled-lift splits second moves upward, promote the angled-lift splits first, make the distance of loose plug, thereby form first die cavity to half die cavity of left dislocation, it is the outer wall thickness of plastic chair, inject a kind of molten plastic of color by nozzle alignment first cast gate of injection moulding main frame, till filling with first die cavity, annotate the skin of making plastic chair;
C, promote cylinder and stretch out piston rod, drive angled-lift splits second and move downward, promote the angled-lift splits first, make the loose plug distance of half die cavity of displacement to the right, i.e. the distance of plastic chair one half thickness, thus form second die cavity;
D, inject the molten plastic of another kind of color, annotate the internal layer of making plastic chair by nozzle alignment second cast gate of the secondary machine of injection moulding;
Die sinking ejects and comprises skin and double-colored plastic chair seat board and the backrest of internal layer after e, the pressurize.
The processing method of dual-color plastic chair of the present invention adopts an injection moulding main frame and the secondary machine of injection moulding through twice injection moulding, makes double-colored chair, adopts the secondary operations moulding to compare with existing, has improved production efficiency and product yield greatly.Main frame is the injection machine of a perfect in shape and function, can be used as monochromatic injection machine and uses, and low equipment investment, concrete structure comprise injection member, matched moulds parts, fuselage, hydraulic system, heating system, cooling system etc.; Secondary machine only has injection member, mainly comprise screw rod, barrel, screw head, nozzle, injection seat and power source etc., secondary machine center line and host center line are orthogonal to become 90 °, greatly help installing, secondary machine nozzle contacts with second cast gate, the main frame nozzle contacts with first cast gate, and two nozzles successively carry out independent injection moulding, and what therefore inject is the well-defined plastic chair of color.
The processing method of dual-color plastic chair of the present invention more than 10 seconds of the outer back of its injection moulding main frame injection pressurize, can be avoided influencing product appearance with the injection moulding molten plastic mixed flow of different colours for the second time.The displacement of its loose plug is the 3-5 millimeter, and the die cavity that loose plug shifts out back formation is the internal layer of plastic chair, and the distance that shifts out is exactly the thickness of internal layer, and the optimum thickness value is the 3-5 millimeter, the feasible chair better performances that injects.
Description of drawings
Fig. 1 is that the master of the processing mold of dual-color plastic chair of the present invention looks schematic diagram;
Fig. 2 is the A-A cross-sectional schematic of the processing mold of dual-color plastic chair of the present invention;
Fig. 3 is the schematic top plan view of the processing mold of dual-color plastic chair of the present invention;
Fig. 4 is the B-B cross-sectional schematic of the processing mold of dual-color plastic chair of the present invention;
Fig. 5 is the schematic perspective view of the dual-color plastic chair that processes through this processing mold;
Fig. 6 is that schematic diagram is looked on the left side of the dual-color plastic chair that processes through this processing mold;
Fig. 7 is that the master of the injection machine that matches with this processing mold looks schematic diagram;
Fig. 8 is the schematic top plan view of the injection machine that matches with this processing mold.
The specific embodiment
The present invention relates to the processing mold of dual-color plastic chair, as Fig. 1-shown in Figure 4, running gate system is arranged, die cavity and core, dismoulding system and base plate 1,8, fixing and installation accessories composition such as mould pin 7 grades, centring ring 10 is installed on the base plate 8, be convenient to injection machine on nozzle location, the die cavity 61 that goods are arranged between die cavity and the core, it is characterized in that in the described core 5 loose plug 4 being arranged, loose plug 4 links to each other with angled-lift splits first 3, available screw is fastening, angled-lift splits first 3 contacts with angled-lift splits second 2, can adopt chase mortise to connect the generation of two angled-lift splitses is relatively moved, and angled-lift splits second 2 drives by promoting cylinder 13; Described die cavity has two cast gates, 14,15, the first cast gates, 14 openings to be positioned at die cavity 6 back sides, and skin 17, the second cast gates 15 openings of injection-moulded plastic chair are positioned at the end face of die cavity 6, the internal layer 16 of injection-moulded plastic chair.Loose plug 4 in fact also is the part of core 5, rely on moving of loose plug 4 to produce two die cavitys, be respectively the outer die cavity and the internal layer die cavity of plastic chair, make the skin 17 of plastic chair to the molten plastic of a kind of color of outer cavity injection from first cast gate, make the internal layer 16 of plastic chair from second cast gate to the molten plastic of the another kind of color of internal layer cavity injection.Make the plastic chair of one by this mould, as Fig. 5, shown in Figure 6, its seat board is mutually compound with outer 17 by the internal layer 16 of two kinds of different colours with backrest, the color boundary is clearly demarcated, compares good looking appearance with monochromatic chair, the product specification height, and products thickness is big, and the mechanical strength height can be widely used in office and the daily life.And, improve the market competitiveness because the different colours combination can be given old product new life.The outside wall surface 141 that the spacing of first cast gate 14 starts from die cavity 6 arrives mould intracavity wall face 142, the spacing of second cast gate 15 starts from the center 152 of the end wall surface 151 arrival die cavitys of die cavity 6, be convenient to cast, and produce two kinds of plastic chair outer 17 and internal layers 16 that color limit is clearly demarcated.Its described second cast gate 15 is installed in the hot flow path, can on die cavity 6, open a groove and place hot runner manifold 18, heating plate can be established in the hot runner manifold both sides, be equipped with thermal conductive wire on the heating plate, thereby heat is delivered to hot flow path by heating plate through hot runner manifold 18, make through the unlikely condensation of plastics in second cast gate 15, help the goods rapid shaping.
The processing method of dual-color plastic chair is characterized in that:
A, an injection moulding main frame 20 is arranged, comprise injection member, matched moulds parts, fuselage, control system and feeding device, mould 24 is installed in the injection moulding main frame, it is characterized in that the secondary machine 30 of injection moulding being installed in a side of injection moulding main frame 20, the secondary machine of injection moulding has injection member, screw rod 32, barrel and nozzle 33, the center line of the secondary machine of injection moulding and the center line of injection moulding main frame are orthogonal to become 90 °, and the nozzle 33 of injection moulding pair machine faces the mould 24 in the injection moulding main frame;
B, promotion cylinder 13 start, the compression piston bar, driving angled-lift splits second 2 moves upward, promote angled-lift splits first 3, make the distance of loose plug 4, thereby form first die cavity to half die cavity of left dislocation, it is the outer wall thickness of plastic chair, nozzle 23 by the injection moulding main frame is aimed at the molten plastic that first cast gate 14 injects a kind of color, till filling with first die cavity, annotates the skin 17 of making plastic chair;
C, promote cylinder 13 and stretch out piston rod, drive angled-lift splits second 2 and move downward, promote angled-lift splits first 3, make loose plug 4 distance of half die cavity of displacement to the right, i.e. the distance of plastic chair one half thickness, thus form second die cavity;
D, aim at the molten plastic that second cast gate 15 injects another kind of color, annotate the internal layer 16 of making plastic chair by the nozzle 33 of the secondary machine of injection moulding;
Die sinking ejects and comprises outer 17 and double-colored plastic chair seat board and the backrest of internal layer 16 after e, the pressurize.
The processing method of dual-color plastic chair of the present invention, adopting an injection moulding main frame 20 and the secondary machine 30 of injection moulding is double-colored chair through twice injection moulding, one-shot forming, adopts the secondary operations moulding to compare with existing, has improved production efficiency and product yield greatly.As Fig. 7, shown in Figure 8, main frame 20 is injection machines of a perfect in shape and function, can be used as monochromatic injection machine and use, concrete structure comprises injection part attached (as screw rod 22, barrel, nozzle 23 etc.), mould 24, folding mould parts 25, fuselage, hydraulic system, heating system, cooling system etc.; Secondary machine 30 only has injection member, mainly comprises screw rod 32, barrel, screw head, nozzle 33, injection seat and power source etc., and secondary machine center line and host center line are orthogonal to become 90 °, and secondary machine 30 nozzles 33 face mould 24.The plastics that in main frame barrel 21, add a kind of color before the injection moulding, the plastics of the another kind of color of adding in the secondary machine barrel, two kinds of plastic materials can be inequality, to improve the functional and aesthetics of goods.More than 10 seconds of the outer back of its injection moulding main frame injection pressurize, can avoid influencing product appearance with the injection moulding molten plastic mixed flow of different colours for the second time, the displacement of its loose plug 4 is 3-5 millimeters, the die cavity that loose plug 4 shifts out back formation is the internal layer 16 of plastic chair, and the distance that shifts out is exactly the thickness of internal layer, the optimum thickness value is the 3-5 millimeter, the feasible chair better performances that injects.
Claims (5)
1. the processing mold of dual-color plastic chair, running gate system, die cavity and core, dismoulding system are arranged, the die cavity that goods are arranged between die cavity and the core, loose plug (4) is arranged in the described core (5), loose plug (4) links to each other with angled-lift splits first (3), angled-lift splits first (3) contacts with angled-lift splits second (2), and angled-lift splits second (2) drives by promoting cylinder (13); Described die cavity has two cast gates (14,15), it is characterized in that first cast gate (14) opening is positioned at the die cavity back side, the outside wall surface (141) that the spacing of first cast gate (14) starts from die cavity arrives mould intracavity wall face (142), the skin of injection-moulded plastic chair (17), second cast gate (15) opening is positioned at the end face of die cavity, the spacing of second cast gate (15) starts from the center (152) of end wall surface (151) the arrival die cavity of die cavity, the internal layer of injection-moulded plastic chair (16).
2. the processing mold of dual-color plastic chair as claimed in claim 1 is characterized in that described second cast gate (15) is installed in the hot flow path.
3. the processing method of dual-color plastic chair as claimed in claim 1 is characterized in that:
A, an injection moulding main frame is arranged, comprise injection member, matched moulds parts, fuselage, control system and feeding device, mould is installed in the injection moulding main frame, it is characterized in that the secondary machine (30) of injection moulding being installed in a side of injection moulding main frame (20), the secondary machine of injection moulding has injection member, screw rod, barrel and nozzle, the center line of the secondary machine of injection moulding and the center line of injection moulding main frame are orthogonal to become 90 °, and the nozzle of injection moulding pair machine faces the mould in the injection moulding main frame;
B, promotion cylinder (13) start, the compression piston bar, driving angled-lift splits second (2) moves upward, promote angled-lift splits first (3), make the distance of loose plug (4), thereby form first die cavity to half die cavity of left dislocation, it is the outer wall thickness of plastic chair, inject a kind of molten plastic of color by nozzle alignment first cast gate of injection moulding main frame, till filling with first die cavity, annotate the skin (17) of making plastic chair;
C, promote cylinder (13) and stretch out piston rod, drive angled-lift splits second (2) and move downward, promote angled-lift splits first (3), make loose plug (4) distance of half die cavity of displacement to the right, i.e. the distance of plastic chair one half thickness, thus form second die cavity;
D, inject the molten plastic of another kind of color, annotate the internal layer (16) of making plastic chair by nozzle alignment second cast gate (15) of the secondary machine of injection moulding;
Die sinking ejects and comprises skin (17) and double-colored plastic chair seat board and the backrest of internal layer (16) after e, the pressurize.
4. the processing method of a kind of dual-color plastic chair as claimed in claim 3 is characterized in that more than 10 seconds of the outer back of injection moulding main frame injection pressurize.
5. the processing method of a kind of dual-color plastic chair as claimed in claim 3, the displacement that it is characterized in that loose plug (4) is the 3-5 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2007100681900A CN101288992B (en) | 2007-04-19 | 2007-04-19 | Processing die of dual-color plastic chair and its processing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100681900A CN101288992B (en) | 2007-04-19 | 2007-04-19 | Processing die of dual-color plastic chair and its processing method |
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| CN101288992A CN101288992A (en) | 2008-10-22 |
| CN101288992B true CN101288992B (en) | 2010-04-14 |
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| CN2007100681900A Expired - Fee Related CN101288992B (en) | 2007-04-19 | 2007-04-19 | Processing die of dual-color plastic chair and its processing method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161226B (en) * | 2011-05-27 | 2013-05-01 | 浙江星威办公家具制造有限公司 | Mechanism for removing plastic backrest mold |
| CN102294787B (en) * | 2011-08-11 | 2013-05-29 | 上海小糸车灯有限公司 | Groove structure of material sealing rib insert and application thereof |
| CN103876507B (en) * | 2014-03-17 | 2016-05-25 | 星威国际家居有限公司 | A kind of double-colored interlayer plastic chair and processing method |
| CN109795070B (en) * | 2017-11-17 | 2024-08-13 | 浙江复洁环保设备有限公司 | Ultra-large plastic forming equipment |
| CN108177307A (en) * | 2017-12-29 | 2018-06-19 | 台州市黄岩金马泰模具有限公司 | Bicolor injection mould edge of a knife sealing quadric injection mould mechanism |
| CN112388908B (en) * | 2020-10-19 | 2022-06-21 | 宁波方正汽车模具股份有限公司 | Double-color mold short-knife-edge injection molding structure |
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|---|---|---|---|---|
| CN1460584A (en) * | 2002-05-15 | 2003-12-10 | 岐阜车体工业株式会社 | Casting mould |
| CN1812876A (en) * | 2003-06-24 | 2006-08-02 | 霍尔马克科技公司 | Multi-color injection molded door panel and process |
| CN1871108A (en) * | 2003-08-25 | 2006-11-29 | 约翰逊控制技术公司 | Multi-assembly injection moulding of decorative panel |
| CN201036909Y (en) * | 2007-04-19 | 2008-03-19 | 叶根林 | Mould for pressing double-color plastic chair |
-
2007
- 2007-04-19 CN CN2007100681900A patent/CN101288992B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1460584A (en) * | 2002-05-15 | 2003-12-10 | 岐阜车体工业株式会社 | Casting mould |
| CN1812876A (en) * | 2003-06-24 | 2006-08-02 | 霍尔马克科技公司 | Multi-color injection molded door panel and process |
| CN1871108A (en) * | 2003-08-25 | 2006-11-29 | 约翰逊控制技术公司 | Multi-assembly injection moulding of decorative panel |
| CN201036909Y (en) * | 2007-04-19 | 2008-03-19 | 叶根林 | Mould for pressing double-color plastic chair |
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