WO2019214316A1 - 可精定位的型腔模具 - Google Patents

可精定位的型腔模具 Download PDF

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Publication number
WO2019214316A1
WO2019214316A1 PCT/CN2019/075889 CN2019075889W WO2019214316A1 WO 2019214316 A1 WO2019214316 A1 WO 2019214316A1 CN 2019075889 W CN2019075889 W CN 2019075889W WO 2019214316 A1 WO2019214316 A1 WO 2019214316A1
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WO
WIPO (PCT)
Prior art keywords
mold
positioning
movable mold
fixed
limiting
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Application number
PCT/CN2019/075889
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English (en)
French (fr)
Inventor
李丽
邓宇斌
林显记
郑桂林
Original Assignee
广州市型腔模具制造有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 广州市型腔模具制造有限公司 filed Critical 广州市型腔模具制造有限公司
Priority to DE212019000039.8U priority Critical patent/DE212019000039U1/de
Publication of WO2019214316A1 publication Critical patent/WO2019214316A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2227—Die seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2245—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies having walls provided with means for marking or patterning

Definitions

  • the invention relates to the field of mould technology, in particular to a cavity mold which can be finely positioned.
  • the mold opening force is smaller than that of other die-casting machines.
  • the recoil force is increased, which increases the tightening force of the mold, which often leads to mold opening.
  • the mold opening force is insufficient, the mold cannot be opened, and the mold needs to be improved to ensure that the mold is opened normally and the problem of failure in the production process is reduced.
  • the fine positioning on the mold structure can offset the recoil force and reduce the deformation of the mold, thereby facilitating mold opening. Therefore, how to achieve the fine positioning of the cavity mold has become the key to solving the lack of mold opening force.
  • the technical problem to be solved by the present invention is to provide a cavity mold which can be finely positioned, and the deformation between the movable mold and the fixed mold can reduce the deformation of the mold, and the resistance during mold opening can be reduced.
  • a finely positionable cavity mold comprising a fixed mold and a movable mold, the upper end surface of the movable mold is arranged with a plurality of positioning protrusions, and the fixed mold is arranged with a plurality of positionings matched with the positioning protrusions a groove, a side of each of the positioning protrusions facing the middle portion of the movable mold is a positioning working surface, and a side of each of the positioning grooves facing away from the middle portion of the fixed mold is engaged with a corresponding positioning working surface.
  • a plurality of limiting protrusions are disposed on the upper end surface of the movable mold, and a side of each of the limiting protrusions facing away from a middle portion of the movable mold is a limiting working surface, and the fixed mold is arranged with each The bonding surface corresponding to the limiting working surface, the force of each of the limiting protrusions on the fixed mold faces outward.
  • each of the positioning protrusions is located outside the upper end of the movable mold.
  • the upper end surface of the movable mold is a regular polygonal boss, and the number of positioning protrusions on each side of the regular polygonal boss is the same.
  • the upper end surface of the movable mold is a square boss.
  • the upper end surface of the movable mold is arranged with four limiting slots for placing the limiting protrusions, and the four limiting slots are respectively located at four sides of the upper end surface of the movable mold.
  • an auxiliary bump is disposed at an end of each of the limiting slots, and the end is located outside the movable mold, and the fixed bending side is left between the auxiliary protruding block and the limiting protruding block The limit area placed.
  • the positioning work is inclined toward the outer side of the movable mold.
  • the limit work is inclined toward a middle portion of the movable mold.
  • the present invention designs a plurality of positioning protrusions on the upper end surface of the movable mold, and the direction of the force of each positioning protrusion to the fixed mold faces the middle portion of the fixed mold, which can cancel the deformation of the fixed mold to the outside when the die casting is performed.
  • the invention has simple structure and obvious effect, and can be widely applied to the field of mold technology.
  • Figure 1 is an assembly view of the present invention
  • Figure 2 is a structural view of a movable mold
  • Figure 3 is an assembly drawing of a fixed mold
  • Figure 4 is a cross-sectional view of the movable mold
  • Figure 5 is a structural view of a fixed mold
  • Figure 6 is an assembled view of a fixed mold and one of the limit bumps and one auxiliary bump.
  • the finely positionable cavity mold includes a fixed mold 1 and a movable mold 2, and the upper end surface of the movable mold 2 is arranged with a plurality of positioning protrusions 21, and the fixed mold 1 is disposed with each of the positioning protrusions 21 Matching multiple positioning grooves.
  • a side of each of the positioning protrusions 21 facing the middle of the movable mold 2 is a positioning working surface, and a side of each of the positioning grooves facing away from a middle portion of the fixed mold 1 is engaged with a corresponding positioning working surface.
  • the force of the positioning work facing the fixed mold is opposite to the direction of the force of the fixed mold when the mold is molded, and the deformation of the cavity of the fixed mold during the mold can be avoided.
  • Each of the positioning protrusions 21 is located outside the upper end of the movable mold 2, respectively.
  • the upper end surface of the movable mold 2 is a regular polygon, and the number of the positioning protrusions 21 on each side of the regular polygon is the same. And the number of the positioning protrusions 21 on each side is two, respectively arranged near the two ends of the side.
  • the upper end surface of the movable mold 2 is a square boss.
  • a plurality of limiting protrusions 31 are disposed on the upper end surface of the movable mold 2, and a side of each of the limiting protrusions 31 facing away from the middle of the movable mold 2 is a limiting working surface, and the fixed mold 1 is arranged There is a matching surface corresponding to each of the limit working faces.
  • the upper end surface of the movable mold 2 is disposed with a limiting groove for placing each of the limiting protrusions 31.
  • the number of the limiting bumps 31 and the limiting slots are four, and each of the limiting slots corresponds to one side of the square, and the axis of the limiting slot is perpendicular to the corresponding edge.
  • the two positioning protrusions 21 on each side are symmetrically arranged on both sides of the corresponding limiting slot.
  • the limiting protrusion 31 can slide along the corresponding limiting slot, and at the same time, it can have a limiting function for the fixed mold 1, and can offset the force of the partial positioning work facing the fixed mold 1.
  • An auxiliary bump 32 is disposed at an end of each of the limiting slots, and the end is located at an outer side of the upper end of the movable mold 2, and the auxiliary bump 32 and the limiting bump 31 are left for the predetermined The limit area placed on the side of the die 1.
  • the limiting work is inclined toward the outer side of the movable mold 2, and the positioning work is inclined toward the middle of the movable mold 2.
  • the limit working surface and the positioning working surface are inclined, so that the fixed mold 1 and the movable mold 2 are opened.
  • the limit work faces the outer side of the fixed mold 1 with the force of the fixed mold 1
  • the positioning work faces the middle of the fixed mold 1 against the force of the fixed mold 1, and the directions of the two forces are opposite, and can be mutually opposite
  • the offset can avoid the deformation of the fixed mold 1 due to the large force, and it is convenient to open the mold, which can effectively solve the problem of insufficient mold opening force.
  • the mold of the transmission is designed to locate the groove at the four corners of the movable mold, and the four-corner design of the fixed mold is used to adjust the positioning between the movable mold and the fixed mold. Therefore, in the die casting process, the fixed mold is simultaneously subjected to the outward force of the limit projection and the positioning groove, thereby causing the deformation of the fixed mold, thereby causing the mold to be unable to open normally.
  • the positioning method adopted by the invention is that the positioning protrusion on the movable mold changes the direction of the force of the upper part of the fixed mold, and the inward force of the fixed mold can offset the limit protrusion and the die-casting product.
  • the force of the fixed mold thereby reducing the deformation of the fixed mold, and ensuring normal mold opening.
  • it can also improve the service life of the mold, improve the stability of the mold during die casting, reduce the scrap rate, and reduce the mold opening failure rate and corresponding maintenance cost during mold production.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

一种可精定位的型腔模具，包括定模（1）和动模（2），动模的上端面布置有多个定位凸起（21），定模上布置有与各定位凸起相匹配的多个定位凹槽，各定位凸起中朝向动模中部的侧面为定位工作面，各定位凹槽中背向定模中部的侧面与对应的定位工作面贴合。该模具在动模的上端面设计多个定位凸块，各定位凸块对定模的作用力方向朝向定模的中部，可抵消压铸时定模的变形，结构简单，可广泛应用于模具技术领域。

Description

可精定位的型腔模具
技术领域
本发明涉及模具技术领域，特别涉及可精定位的型腔模具。
背景技术
由于布勒压铸机两板式机板的特点，开模力相对于其他的压铸机较小，生产过程中由于模架变形产生反冲力等因素，加大了模具的包紧力，往往导致开模的时候开模力不足使模具无法开模，模具需要改善结构以保证模具开模正常，减少生产过程中的故障问题。另外，在生产过程中经试验发现，模具结构上的精定位可抵消反冲力，减少模具变形，从而便于开模。因此如何实现型腔模具的精定位成为了解决开模力不足的关键。
发明内容
本发明所要解决的技术问题是提供可精定位的型腔模具，通过动模和定模之间的精定位，减少模具的变形，可减少开模时的阻力。
为解决上述技术问题所采用的技术方案：
可精定位的型腔模具，包括定模和动模，所述动模的上端面布置有多个定位凸起，所述定模上布置有与各所述定位凸起相匹配的多个定位凹槽，各所述定位凸起中朝向所述动模中部的侧面为定位工作面，各所述定位凹槽中背向所述定模中部的侧面与对应的定位工作面贴合。
进一步，所述动模的上端面布置有多个限位凸块，各所述限位凸块中背向所述动模中部的侧面为限位工作面，所述定模上布置有与各所述限位工作面对应的贴合面，各所述限位凸块对所述定模的作用力朝向外侧。
进一步，各所述定位凸起分别位于所述动模上端的外侧。
进一步，所述动模的上端面为正多边形凸台，所述正多边形凸台的每个边上的定位凸起数量相同。
进一步，所述动模的上端面为正方形凸台。
进一步，所述动模的上端面布置有放置各所述限位凸块的四个限位槽，四个所述限位槽分别位于所述动模上端面的四个侧边。
进一步，各所述限位槽的末端布置有辅助凸块，该末端位于所述动模的外侧，所述辅助凸块与所述限位凸块之间留有可供所述定模侧边放置的限位区域。
进一步，所述定位工作面向所述动模的外侧倾斜。
进一步，所述限位工作面向所述动模的中部倾斜。
有益效果：本发明在动模的上端面设计多个定位凸块，各定位凸块对定模的作用力方向朝向定模的中部，可抵消压铸时定模向外侧的变形。本发明结构简单，效果明显，可广泛应用于模具技术领域。
附图说明
图1为本发明的装配图；
图2为动模的结构图；
图3为定模的装配图；
图4为动模的剖视图；
图5为定模的结构图；
图6为定模与其中一个限位凸块、一个辅助凸块的装配图。
具体实施方式
下面结合图1至图6对本发明做进一步的说明。
可精定位的型腔模具，包括定模1和动模2，所述动模2的上端面布置有多个定位凸起21，所述定模1上布置有与各所述定位凸起21相匹配的多个定位凹槽。各所述定位凸起21中朝向所述动模2中部的侧面为定位工作面，各所述定位凹槽中背向所述定模1中部的侧面与对应的定位工作面贴合。所述定位工作面对定模的作用力与铸模时产品对定模的作用力方向相反，可避免铸模时定模的型腔受力变形。
各所述定位凸起21分别位于所述动模2上端的外侧。所述动模2的上端面为正多边形，所述正多边形的每个边上的定位凸起21数量相同。且每个边上定位凸起21的数量为两个，分别靠近该边的两端布置。本实施例中，所述动模2的上端面为正方形凸台。
所述动模2的上端面布置有多个限位凸块31，各所述限位凸块31中背向所述动模2中部的侧面为限位工作面，所述定模1上布置有与各所述限位工作面对应的贴合面。所述动模2的上端面布置有放置各所述限位凸块31的限位槽。本实施例中，所述限位凸块31和限位槽的数量均为四个，每个所述限位槽对应所述正方形的一条边，所述限位槽的轴线垂直于对应的边，每个边上的两个所述定位凸起21对称布置在相应所述限位槽的两侧。在压铸产品时，所述限位凸块31可沿对应的限位槽滑动，同时可对定模1具有限位作用，可抵消部分定位工作面对定模1的作用力。
各所述限位槽的末端布置有辅助凸块32，该末端位于所述动模2上端的外侧，所述辅助凸块32与所述限位凸块31之间留有可供所述定模1侧边放置的限位区域。
本实施例中，所述限位工作面向所述动模2的外侧倾斜，且所述定位工作面向所述动模2的中部倾斜。使限位工作面和定位工作面倾斜，便于定模1和动模2开模。同时，限位工作面对定模1的作用力朝向定模1的外侧，定位工作面对定模1的作用力朝向定模1的中部，这两个作用力的方向正好相反，可彼此部分抵消，既可避免定模1因受力较大而变形，又方便开模，可有效解决开模力不足的问题。
本发明与传统的模具区别在于：
传动的模具实在动模的四角设计定位凹槽，定模的四角设计凸台，通过这种凹凸契合调整动模和定模之间的定位校正。因此在压铸过程中，定模同时受到限位凸块和定位凹槽向外的作用力，从而导致定模变形，从而导致无法正常开模。
而本发明采用的定位方式为，通过动模上的定位凸起改变了定模上部分作用力的方向，通过定位凸起对定模向内的作用力，可抵消限位凸块和压铸产品对定模的作用力，从而减小定模的变形，保证正常开模。同时也能提高模具的使用寿命，提高压铸时模具的稳定性，降低废品率，降低模具生产时的开模故障率和相应的维修成本。
以上结合附图对本发明的实施方式作了详细说明，但是本发明不限于上述实施方式，在所述技术领域普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下作出各种变化。

Claims (9)

  1. 可精定位的型腔模具，其特征在于：包括定模（1）和动模（2），所述动模（2）的上端面布置有多个定位凸起（21），所述定模（1）上布置有与各所述定位凸起（21）相匹配的多个定位凹槽，各所述定位凸起（21）中朝向所述动模（2）中部的侧面为定位工作面，各所述定位凹槽中背向所述定模（1）中部的侧面与对应的定位工作面贴合。
  2. 根据权利要求1所述的可精定位的型腔模具，其特征在于：所述动模（2）的上端面布置有多个限位凸块（31），各所述限位凸块（31）中背向所述动模（2）中部的侧面为限位工作面，所述定模（1）上布置有与各所述限位工作面对应的贴合面，各所述限位凸块（31）对所述定模（1）的作用力朝向外侧。
  3. 根据权利要求1所述的可精定位的型腔模具，其特征在于：各所述定位凸起（21）分别位于所述动模（2）上端的外侧。
  4. 根据权利要求1或2所述的可精定位的型腔模具，其特征在于：所述动模（2）的上端面为正多边形凸台，所述正多边形凸台每个边上的定位凸起（21）数量相同。
  5. 根据权利要求4所述的可精定位的型腔模具，其特征在于：所述动模（2）的上端面为正方形凸台。
  6. 根据权利要求5所述的可精定位的型腔模具，其特征在于：所述动模（2）的上端面布置有放置各所述限位凸块（31）的四个限位槽，四个所述限位槽分别位于所述动模（2）上端面的四个侧边。
  7. 根据权利要求6所述的可精定位的型腔模具，其特征在于：各所述限位槽的末端布置有辅助凸块（32），该末端位于所述动模（2）上端的外侧，所述辅助凸块（32）与所述限位凸块（31）之间留有可供所述定模（1）侧边放置的限位区域。
  8. 根据权利要求1所述的可精定位的型腔模具，其特征在于：所述定位工作面向所述动模（2）的外侧倾斜。
  9. 根据权利要求2所述的可精定位的型腔模具，其特征在于：所述限位工作面向所述动模（2）的中部倾斜。
PCT/CN2019/075889 2018-05-10 2019-02-22 可精定位的型腔模具 WO2019214316A1 (zh)

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