CN201784142U

CN201784142U - Injection mold

Info

Publication number: CN201784142U
Application number: CN2010205228609U
Authority: CN
Inventors: 黎健明; 吴小平; 何世雄
Original assignee: Foxlink Electronics Dongguan Co Ltd; Cheng Uei Precision Industry Co Ltd
Current assignee: Foxlink Electronics Dongguan Co Ltd; Cheng Uei Precision Industry Co Ltd
Priority date: 2010-08-27
Filing date: 2010-08-27
Publication date: 2011-04-06
Anticipated expiration: 2020-08-27

Abstract

The utility model discloses an injection mold, which comprises a fixed mold, a movable mold, an unloading mechanism and a movable mold board movement operation mechanism. The movable mold is arranged corresponding to the fixed mold, the movable mold includes an assisting plate and a movable mold board movably mounted on the assisting plate, a forming rod fixed onto the assisting plate can be enclosed together with the fixed mold and the movable mold to form a forming cavity, the forming cavity comprises an elastic arm forming portion and a projection forming portion, the forming rod is used for assisting a forming elastic arm, the movable mold board movement operation mechanism includes a plurality of elastic parts and a plurality of limit connectors, one end of each elastic part is fixed onto an ejector pin plate while the other end penetrating through a containing hole of the assisting plate is abutted onto the movable mold board, and the limit connectors connect the movable mold board together with the assisting plate in a telescopic manner. The injection mold can separately eject products at two stages to ensure smooth demolding of the products without deformation by arranging the movable mold board movement operation mechanism on the movable mold.

Description

Injection mold

Technical field

The utility model relates to a kind of mould, relates in particular to a kind of injection mold.

Background technology

In the injection mold field, under the situation of the comparatively complicated plastic product of forming shape, during the plastic product demoulding, some part viscous force of product is very strong, and product is subjected to ejecting mechanism and its ejecting force is had inhomogeneous, is easy to cause product local because of be out of shape by brute force.

See also Fig. 5, the injecting products 80 that a kind of shape is comparatively complicated has a base portion 81, extends to form two parallel elastic arms of setting up relatively 82 on these base portion 81 diapires, and these elastic arm 82 bottoms convex to form a lateral protrusions 83 to a side.

When product 80 demouldings, way commonly used is the purpose that reaches the demoulding by the angled-lift splits side core-pulling mechanism, and this kind method need take bigger space, and increases production cost easily.

The utility model content

The purpose of this utility model is to provide a kind of injection mold that makes the smooth demoulding of injecting products and unlikely distortion.

For achieving the above object, injection mold that the utility model provides is used for the moulding injecting products, elastic arm that this product has base portion, extend to form from base portion and the lateral protrusions that convexes to form to a side from the elastic arm.Injection mold comprises that a cover half, is installed in shedding mechanism and on the dynamic model with the dynamic model, of the corresponding setting of cover half and is installed in moving platen activity operations mechanism on the dynamic model; Dynamic model comprises a dynamic mould fixing plate, is fixed in an accessory plate and a moving platen that can be installed in relatively versatilely on the accessory plate on this dynamic mould fixing plate, be fixed with a curved lever on the accessory plate, this curved lever can surround forming cavity with cover half and dynamic model, this forming cavity comprises the protruding forming part that is positioned at the elastic arm forming part that is used for the moulding elastic arm on the moving platen and is used for the moulding lateral protrusions, curved lever offers a containing hole in order to the assistant formation elastic arm on the accessory plate; Shedding mechanism comprises an ejector retainner plate and some thimbles, and thimble is fixed on the ejector retainner plate, and ejector retainner plate and thimble can move between dynamic mould fixing plate and accessory plate; Moving platen activity operations mechanism comprises plurality of elastic part and some spacing connectors, elastic component one end is fixed on the ejector retainner plate, the containing hole that the other end passes accessory plate is resisted against on the moving platen, and this spacing connector telescopically links together moving platen and accessory plate.

As mentioned above, the utility model injection mold is provided with a moving platen activity operations mechanism by dynamic model, and then when the injection mold die sinking ejects product, can divide two stages to eject product, to guarantee the smooth demoulding of product and unlikely distortion.

As further improvement, elastic component is a spring, is arranged with a push back pin in the spring, and this push back pin one end is installed on the ejector retainner plate, and the containing hole that push back pin passes accessory plate is inserted in the moving platen, and spring section is contained in this containing hole.

Spacing connector is a limited screw, offers spacing hole on the moving platen, is plugged with a limited screw in the spacing hole, and limited screw is fixed on the accessory plate.

Description of drawings

Fig. 1 is the cutaway view after the utility model injection mold matched moulds;

Fig. 2 is the cutaway view of a kind of state in the utility model injection mold die sinking process;

Fig. 3 is the cutaway view of second kind of state in the utility model injection mold die sinking process;

The schematic diagram of the product lateral protrusions compression that Fig. 4 makes when being in state shown in Figure 3 for the utility model injection mold;

Fig. 5 is the cutaway view of the product of the utility model injection mold manufacturing.

Each description of reference numerals is as follows among the figure:

Injection mold 1

Dynamic model 10 dynamic mould fixing plates 11

Backing plate 12 ejector retainner plates 13

Thimble fixed head 14 thimbles 15

Accessory plate 16 containing holes 161

Moving platen 17 spacing holes 171

Connecting hole 172 cores 18

Base bar 181 curved levers 182

Forming cavity 183 elastic arm forming parts 1831

Projection forming part 1832 moving platen activity operations mechanisms 19

Push back pin 191 springs 192

Limited screw 193 cover half 20

Product 80 base portions 81

Elastic arm 82 lateral protrusions 83

The specific embodiment

By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.

See also Fig. 1, the utility model injection mold 1 comprise a dynamic model 10 and one with the cover half 20 of dynamic model 10 corresponding settings.

Dynamic model 10 comprises that a dynamic mould fixing plate 11, two backing plates 12, an ejector retainner plate 13, a thimble fixed head 14, some thimbles 15, an accessory plate 16, a moving platen 17, are installed in a core 18 and a moving platen activity operations mechanism 19 on the moving platen 17.Backing plate 12 is fixed on the dynamic mould fixing plate 11, accessory plate 16 is fixed on the backing plate 12, moving platen 17 can be installed on the accessory plate 16 relatively versatilely, thimble 15 is fixed on the ejector retainner plate 13, ejector retainner plate 13 and thimble fixed head 14 can be along backing plate 12 in dynamic mould fixing plate 11 and accessory plate 16 between move up and down.Offer a containing hole 161 on the accessory plate 16.

See also Fig. 1 and Fig. 2, offer a spacing hole 171 on the described moving platen 17, these spacing hole 171 bottoms are concaved with a connecting hole 172, and this connecting hole 172 runs through moving platen 17.

Described core 18 has a basic bar 181, and basic bar 181 1 ends have protruded out a curved lever 182, and the length of this curved lever 182 is less than the degree of depth of spacing hole 171.Base bar 181 is fixed on the accessory plate 16, curved lever 182 can surround forming cavity 183 with dynamic model 10 and cover half 20, this forming cavity 183 is in shaped article 80, forming cavity 183 comprises the protruding forming part 1832 that is positioned at the elastic arm forming part 1831 that is used for moulding elastic arm 82 on the moving platen 17 and is used for moulding lateral protrusions 83, and curved lever 182 is in order to assistant formation elastic arm 82.

Described moving platen activity operations mechanism 19 comprises a push back pin 191, a spring 192 and a spacing spiral shell 193.Push back pin 191 1 ends are installed on the ejector retainner plate 13, spring 192 is sheathed on the push back pin 181 and two ends are resisted against ejector retainner plate 13 and accessory plate 16 respectively, the containing hole 161 that push back pin 191 passes accessory plate 16 is inserted in the moving platen 17, and spring 192 parts are contained in this containing hole 161.Limited screw 193 is inserted in the spacing hole 171, and this spacing spiral shell 193 passes connecting hole 172 and is fixed on the accessory plate 16.

See also Fig. 2, the 1 die sinking phase I of injection mold, dynamic model 10 separates with cover half 20, by injection machine (figure do not show) thus ejection thimble fixed head 14 and ejector retainner plate 13 make spring 192 compressions drive moving platens 17 to eject, thereby do not eject product 80 because of moving platen 17 relative thimble fixed heads 14 and ejector retainner plate 13 thimble 15 that moves up simultaneously this moment, just product 80 gradually with curved lever 182 disengagings of core 18; When spacing spiral shell 193 end faces were replaced spacing hole 171 bottoms, moving platen 17 no longer moved and ejects, and this moment, product 80 broke away from the curved lever 182 of core 18.

See also Fig. 3 and Fig. 4, injection mold 1 die sinking second stage, after 80s when the curved lever 182 disengaging products of core 18, injection machine continues to promote thimble fixed head 14 and ejector retainner plate 13 makes thimble 15 eject product 80.In the ejection process, because curved lever 182 separates with product 80, and existence one receiving space between two elastic arms 82 of product 80, thereby the elastic arm 82 that makes product 80 drives lateral protrusions 83 and compresses in receiving space, lateral protrusions 83 can successfully eject from forming cavity 183, and product 80 is separated with dynamic model 10.

As mentioned above, the utility model injection mold 1 is provided with a moving platen activity operations mechanism 19 by dynamic model 10, and then when injection mold 1 die sinking ejects product 80, can divide two stages to eject product 80, to guarantee the product 80 smooth demoulding and unlikely distortion.

The utility model is not limited to the above-mentioned specific embodiment, those skilled in the art that also can make multiple variation in view of the above, make spacing usefulness as adopting chain or other attachments that moving platen is linked together with auxiliary version, and then need not to offer spacing hole on moving platen and the auxiliary version, these variations all should be encompassed in the scope of the utility model claim.

Claims

1. injection mold, be used for the moulding injecting products, this product has base portion, elastic arm that extends to form from base portion and the lateral protrusions that convexes to form to a side from the elastic arm, injection mold comprises a cover half, one is installed in shedding mechanism on the dynamic model with the dynamic model and of the corresponding setting of cover half, this dynamic model comprises a dynamic mould fixing plate, be fixed in an accessory plate and a moving platen that can be installed in relatively versatilely on the accessory plate on this dynamic mould fixing plate, shedding mechanism comprises an ejector retainner plate and some thimbles, thimble is fixed on the ejector retainner plate, and ejector retainner plate and thimble can move between dynamic mould fixing plate and accessory plate; It is characterized in that: be fixed with a curved lever on the accessory plate, this curved lever can surround forming cavity with cover half and dynamic model, this forming cavity comprises the protruding forming part that is positioned at the elastic arm forming part that is used for the moulding elastic arm on the moving platen and is used for the moulding lateral protrusions, curved lever offers a containing hole in order to the assistant formation elastic arm on the accessory plate; Be equiped with a moving platen activity operations mechanism on the dynamic model, this moving platen activity operations mechanism comprises plurality of elastic part and some spacing connectors, elastic component one end is fixed on the ejector retainner plate, the containing hole that the other end passes accessory plate is resisted against on the moving platen, and this spacing connector telescopically links together moving platen and accessory plate.

2. injection mold as claimed in claim 1, it is characterized in that: described elastic component is a spring, is arranged with a push back pin in the spring, and this push back pin one end is installed on the ejector retainner plate, the containing hole that push back pin passes accessory plate is inserted in the moving platen, and spring section is contained in this containing hole.

3. injection mold as claimed in claim 1 is characterized in that: described spacing connector is a limited screw, offers spacing hole on the moving platen, is plugged with a limited screw in the spacing hole, and limited screw is fixed on the accessory plate.