CN106426780A

CN106426780A - Injection die for unshadowed double-colour light-transmitting plastic products

Info

Publication number: CN106426780A
Application number: CN201610974770.5A
Authority: CN
Inventors: 许杰忠
Original assignee: Dongguan City Jun Bang Plastic Mould Co
Current assignee: Dongguan City Jun Bang Plastic Mould Co
Priority date: 2016-11-07
Filing date: 2016-11-07
Publication date: 2017-02-22
Anticipated expiration: 2036-11-07
Also published as: CN106426780B

Abstract

The invention relates to an injection die for unshadowed double-colour light-transmitting plastic products. The injection die comprises a male die plate and a male die core arranged on the male die plate. The injection die further comprises a fixed block fixedly inlaid on the male die core, and a top block inserted on the male die core in a manner of being capable of moving up and down along a die opening direction and with one side surface bonded with the fixed block, wherein a half-horn runner is arranged on one side surface bonded with the fixed block, of the top block, the tip of the half-horn runner stretches in a die cavity and is provided with at least one sprue used for carrying out glue injection on a non-light-transmitting layer contained in a light-transmitting layer; the glue injection is directly carried out below the product through the half-horn runner, and construction of a runner below the light-transmitting layer is not required, thus the problem of shadows during light transmitting of the light-transmitting layer is solved, and the quality of the product is improved; and the problem of difficult die release is solved and damage to the product during die release is avoided through adopting a method of secondary die release.

Description

A kind of injection mold of the double-colored printing opacity plastic cement products of shadow-free

Technical field

The present invention relates to one kind enters plastic structure, specifically refer to a kind of injection mold of shadow-free double-colored printing opacity plastic cement products.

Background technology

With the development and progress of electronic technology, domestic computer and computer peripheral market are also more and more flouring, in order to Meet consumer to keyboard appearance and the pursuit of extremely dazzling effect, the developer of keyboard develops a kind of keyboard of printing opacity, even if Also the letter on button can be seen in dark environment, also make keyboard more added with technology sense simultaneously, such as Chinese patent literature A kind of disclosed double-colored keycap for illuminated keyboard（Application number：201321001245.1）, including internal photic zone and outside Non-transmissive layer, described outside alternatively non-transparent part constitutes the shell of keycap, and internal photic zone is used for constituting numeral, letter or symbol Shape.

And in prior art, above-mentioned double-colored keycap is made using injection mold and other has light transmission part During the double-colored printing opacity plastic cement products such as English, Arabic, Chinese or pattern, the photic zone within first injection mo(u)lding, then injection molding exterior Non-transmissive layer, but the light transmission part structure more Special complex for some products, such as " 4 ", " 6 ", " 0 ", " D ", " Q ", " B ", " mouth " etc., the isolated island structure also including non-transmissive layer in photic zone it will usually adopt seesaw structure, saturating During light formable layer, with thimble in its a runner fabricated below, when being molded non-transmissive layer, coloring agent can be entered solely by this runner Vertical region, makes isolated area also can be filled with the coloring agent of non-transmissive layer；Although this method can be very good to solve special construction The injection problem of product, and the surface of product also will not leave behind the mouth of a river, but the product being manufactured using the method, make Used time, have obvious hatched marks at the runner below its photic zone, have impact on the quality of product；Certainly also adopt oil spout Laser carving technique carves word printing opacity, but not only processing technology is complicated for these methods, high processing costs, and product fraction defective is high；As What overcomes this technical problem, and is able to that more economical, easily mode to be producing the double-colored shadow-free printing opacity of more high-quality Product, is really the major issue that industry should actively break through in addition again, solve.

Content of the invention

The technical problem to be solved in the invention be below the light transmission part of existing double-colored transparent product, to leave shade and The quality of impact product, now provides that a kind of structure is simple, low cost, injection effect are good and the double-colored printing opacity of the easy shadow-free of the demoulding The injection mold of plastic cement products enter plastic structure come to solve background presence technical problem.

For achieving the above object, the technical solution adopted in the present invention is：

A kind of injection mold of the double-colored printing opacity plastic cement products of shadow-free, also includes alternatively non-transparent for manufacturing one kind in photic zone The double-colored transparent product of shadow-free of the isolated island structure of layer, the male die core including male template and in male template, also include solid Surely the fixed block that is embedded on male die core and can be inserted in up and down on male die core along die sinking direction and one side with solid Determine the jacking block that block fits, the one side that described jacking block is fitted with fixed block has half of ox horn runner, described one side of something ox horn The tip of runner is stretched in die cavity and is at least had one for the cast gate to the non-transmissive layer injecting glue comprising in photic zone；Described It is provided with the second ejector retainner plate, described second ejector retainner plate is provided with the regrinding-material thimble for ejecting regrinding-material and is used for below male template The product thimble of ejecting product, the upper end of described regrinding-material thimble is run through male die core and is contacted with the sprue in male die core, institute The upper end stating product thimble is run through male die core and is contacted with the product on male die core, and the upper surface of described second ejector retainner plate is additionally provided with Secondary limited post；The lower section of described second ejector retainner plate is additionally provided with the first ejector retainner plate, and described first ejector retainner plate is provided with push rod and one Secondary limited post, the upper end of described push rod is connected with the bottom of jacking block；The top of a limited post described in matched moulds and public affairs The distance of template bottom is more than distance, the top of a described limited post and the male model on secondary limited post top and male template bottom The distance of plate bottom is more than the height of half of ox horn runner, enables push rod to eject the entirely half of ox horn runner on jacking block； The lower section of described second ejector retainner plate and the first ejector retainner plate is provided with its up and down fore-set of driving.

A kind of preferably the upper end of described jacking block has the lug boss for participating in formed product, and the top of lug boss has There are first step structure and second step structure.

A kind of preferred, the lower section of described first ejector retainner plate is provided with bottom plate, and described bottom plate is provided with support block.

Compared with the existing technology, the invention has the beneficial effects as follows：

By setting half of ox horn runner in jacking block, instead of traditional seesaw structure using half of ox horn runner, from printing opacity Layer the non-transmissive layer of injection directly below it is not necessary to build runner in euphotic lower section, thus solving the photic zone of product The problem of shade in lower section, and compared to the mould of former seesaw structure, inventive die structure is simpler, and manufacturing cost is more Low, and product quality is more excellent；In addition mould adopts secondary demolding structure, when once ejecting, first by jacking block jack-up, allows one side of something Cattle horn shape runner exposes, and during Double-ejection, regrinding-material is ejected together with product by secondary thimble and product thimble, and regrinding-material is from partly The side of side cattle horn shape runner skids off, and realizes the demoulding of product, therefore solves the problems, such as that traditional cow glue powder demoulding is difficult.

Brief description

Fig. 1 is the profile of double-colored transparent product；

Fig. 2 is the profile of the present invention；

Fig. 3 is the enlarged diagram of the part A of Fig. 2；

Fig. 4 is my enlarged diagram of fixed block of the present invention and jacking block；

The structural representation that Fig. 5 once ejects for the present invention；

Fig. 6 is the structural representation schematic diagram of Double-ejection of the present invention.

Specific embodiment

Below in conjunction with accompanying drawing, the present invention is further described：

The direction term being previously mentioned in following examples, such as " horizontal, longitudinal, left and right " etc. are only the directions of refer to the attached drawing, because This, the direction term of use is used to explanation not for limiting this practicality invention.

As shown in figure 1, the present invention provides a kind of injection mold of shadow-free double-colored printing opacity plastic cement products, for manufacturing one kind Also include the double-colored transparent product of shadow-free 1 of the isolated island structure of non-transmissive layer 12 in photic zone 11, for example digital " 6 ", word Female " O " etc., when manufacturing this kind of product 1, first injection mo(u)lding photic zone 11, then injection mo(u)lding non-transmissive layer 12.

As shown in Figures 2 to 4, the invention provides a kind of injection mold of shadow-free double-colored printing opacity plastic cement products, it is used for Manufacture this special construction product 1 that some also include non-transmissive layer 12 in photic zone 11, such as numerical key " 6 ", letter Key " O " etc., the male die core 3 including male template 2 and in male template 2, also include the fixation that fixation is embedded on male die core 3 Block 31 and the jacking block that energy be inserted on male die core 3 along die sinking direction up and down and one side is fitted with fixed block 31 32, the one side that described jacking block 32 is fitted with fixed block 31 has half of ox horn runner 33, described one side of something ox horn runner 33 Tip at least has one for the cast gate 331 to non-transmissive layer 12 injecting glue comprising in photic zone 11；According to special on product 1 Word or the needs of pattern, cast gate 331 can set one it is also possible to set two even more than wherein setting tool has a cast gate 331 is for a non-transmissive layer 12 region injecting glue comprising in the photic zone 11 such as alphabetical " D ", " 0 "；There are two cast gates 331 be for the two non-transmissive layer 12 region injecting glue comprising in the photic zone 11 such as alphabetical " B ", digital " 8 ", setting is multiple Cast gate 331 then corresponds to more than the word of multiple isolated island structures or pattern and provide only two kinds of specific embodiments, not to this Invention constitutes any restriction；The upper end of described jacking block 32 has the lug boss 321 for participating in formed product, lug boss 321 Top there is first step structure and second step structure.

It is provided with the second ejector retainner plate 4, described second ejector retainner plate 4 is provided with for ejecting regrinding-material below described male template 2 Regrinding-material thimble 41 and the product thimble 42 for ejecting product, the upper end of described regrinding-material thimble 41 run through male die core 3 and with Be arranged on the sprue contact in male die core 3, the upper end of described product thimble 42 run through male die core 3 and with male die core 3 on product Product 1 contact, and the upper surface of described second ejector retainner plate 4 is additionally provided with secondary limited post 43；The lower section of described second ejector retainner plate 4 is additionally provided with First ejector retainner plate 5, described first ejector retainner plate 5 is provided with push rod 51 and a limited post 52, the upper end of described push rod 51 and top The bottom of block 32 connects；The lower section of described second ejector retainner plate 4 and the first ejector retainner plate 5 is provided with its up and down fore-set of driving 44；The distance of the top of a limited post 52 described in matched moulds and male template 2 bottom be more than the top of secondary limited post 43 with The distance of male template 2 bottom, the top of a described limited post 52 is more than half of ox horn runner 33 with the distance of male template 2 bottom Height, enable push rod 51 to eject the entirely half of ox horn runner 33 on jacking block, the water in convenient one side of something ox horn runner 33 Mouth material 332 demouldings；The lower section of described first ejector retainner plate 5 is provided with bottom plate 6, and described bottom plate 6 is provided with support block 61.

During design this programme, technical staff once attempted directly entering the scheme of glue using common ox horn, but Although being that this scheme can carry out pinpointing into glue, in the demoulding because the melten gel at cast gate 331 has solidified, forced demoulding It is easily damaged product 1, therefore using the pattern coordinating monolateral ox horn shape runner 33 with the secondary demoulding in jacking block 32, in product 1 After shaping cooling, first jacking block 32 is ejected in the lump together with product 1 and so that regrinding-material 332 exposes, then when ejecting for the first time Product 1 and regrinding-material 332 are ejected from monolateral ox horn runner 33, is finally completed the demoulding, the following is the present invention and specifically work Process and principle.

As shown in Figure 5 and Figure 6, when being included in the non-transmissive layer 12 in photic zone 11 in injection, the sizing material of melting passes through public affairs Sprue on die 3 flows in the half of ox horn runner 33 of each jacking block 32, subsequently from product 1 directly below to comprising Non-transmissive layer 12 region injecting glue in photic zone 11；After product 1 cooling, fore-set 44 drives an ejector retainner plate 5 and secondary top Needle plate 4 moves up a segment distance, and by jacking block 32 jack-up, jacking block 32 acts as together with product 1 one and moves upwards, directly push rod 51 simultaneously To the lower contact of a limited post 52 and male template 2, the half of ox horn runner 33 in jacking block 32 ejects expose completely, jacking block 32 Also stop motion, once ejection completes；Subsequently secondary ejector retainner plate 4 continues to move up a segment distance, and secondary thimble 4 will be partly simultaneously Regrinding-material 332 in side ox horn runner 33 ejects, product 1 is ejected by product thimble 42 simultaneously, until secondary limited post 43 and public affairs The lower contact of template 2, product 1 and regrinding-material 332 are ejected completely, and now Double-ejection completes.

The above not imposes any restrictions to the technical scope of the present invention, and all foundation the technology of the present invention essence is to above Any modification, equivalent variations and modification that embodiment is made, all still fall within the range of technical scheme.

Claims

1. the injection mold of the double-colored printing opacity plastic cement products of a kind of shadow-free, for manufacture one kind also include in photic zone non- The double-colored transparent product of shadow-free of the isolated island structure of photosphere, the male die core including male template and in male template, its feature It is：Also include the fixing fixed block being embedded on male die core and male die core can be inserted in up and down along die sinking direction The jacking block that upper and one side is fitted with fixed block, the one side that described jacking block is fitted with fixed block has half of ox horn stream Road, the tip of described one side of something ox horn runner is stretched in die cavity and is at least had one for the non-transmissive layer comprising in photic zone The cast gate of injecting glue；It is provided with the second ejector retainner plate, described second ejector retainner plate is provided with for ejecting regrinding-material below described male template Regrinding-material thimble and the product thimble for ejecting product, the upper end of described regrinding-material thimble run through male die core and with male die core in Sprue contact, the upper end of described product thimble run through male die core and contacted with the product on male die core, described second thimble The upper surface of plate is additionally provided with secondary limited post；The lower section of described second ejector retainner plate is additionally provided with the first ejector retainner plate, described first thimble Plate is provided with push rod and a limited post, and the upper end of described push rod is connected with the bottom of jacking block；Described in matched moulds once The distance of the top of limited post and male template bottom is more than the distance on secondary limited post top and male template bottom, described once limits The distance of top and the male template bottom of position post is more than the height of half of ox horn runner, enables push rod by whole half on jacking block Side ox horn runner ejection；The lower section of described second ejector retainner plate and the first ejector retainner plate is provided with its up and down fore-set of driving.

2. a kind of double-colored printing opacity plastic cement products of shadow-free according to claim 1 injection mold it is characterised in that：Described The upper end of jacking block has the lug boss for participating in formed product, and the top of lug boss has first step structure and second Stage structure.

3. a kind of double-colored printing opacity plastic cement products of shadow-free according to claim 1 injection mold it is characterised in that：Described The lower section of the first ejector retainner plate is provided with bottom plate, and described bottom plate is provided with support block.