CN-117620126-B - Water-proof device and method for die casting mold core-pulling spraying water

CN117620126BCN 117620126 BCN117620126 BCN 117620126BCN-117620126-B

Abstract

The invention discloses a water-proof device and a method for core-pulling spraying water of a die-casting mold, which belong to the technical field of high-pressure casting, wherein the water-proof device comprises a water-proof unit and a driving member, the water-proof unit is arranged on a first mold corresponding to a core-pulling tailstock, the end face of the water-proof unit, which faces the core-pulling tail seat, is provided with a blocking plane which is in sliding fit with the side wall surface of the core-pulling tail seat, which is away from the first die, and the blocking gap is located in the region of the core-pulling tail seat. The driving members are each disposed between the first mold and the water blocking unit. Also discloses a water-proof method for die casting mould core-pulling spraying water. The invention provides a water-proof device and a method for die casting mold core-pulling spraying water, which can be simultaneously applied to a core-pulling tail seat provided with a movable core-pulling needle and a fixed core-pulling needle, and can effectively prevent spray cooling water from flowing into a die cavity from a gap between the core-pulling needle and the core-pulling tail seat in the cooling process of a die under the premise of ensuring the relative movement between the core-pulling needle and the core-pulling tail seat.

Inventors

LUO YUHUI
LIAO JIANQIANG
GUAN WEIJIAN
XIAO HOUTAO
LIANG ZHENGTAO

Assignees

广东鸿图武汉压铸有限公司
广东鸿图科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20231101

Claims (10)

1. The utility model provides a water proof device of die-casting mould spraying water of loosing core for to the water proof of the clearance between tailstock and the needle of loosing core when the cooling, its corresponding tailstock setting of loosing core is on the lateral wall face that the die cavity was seted up to first mould, its characterized in that, water proof device includes: The waterproof unit is arranged on the first die corresponding to the core-pulling tail seat, a blocking plane is arranged on the end face, facing the core-pulling tail seat, of the waterproof unit, the blocking plane is in sliding fit with the side wall surface, facing away from the first die, of the core-pulling tail seat, and the gap is blocked from being located in the region of the core-pulling tail seat; The driving members are arranged between the first die and the water-proof unit, and are configured to drive the water-proof unit to completely shield the side wall surface of the core-pulling tail seat corresponding to the gap on the core-pulling tail seat when the first die is cooled, and drive the water-proof unit to completely separate from the side wall surface of the cavity of the first die when the first die and the second die are clamped.
2. The water-blocking device for core-pulling and water-spraying of die-casting molds according to claim 1, wherein the first mold is provided with a notch communicated with the cavity from the top end surface along a first direction, and the core-pulling tailstock is arranged in the notch.
3. The water-proof device for die-casting mold core-pulling spraying water according to claim 2, wherein a core-pulling power member is arranged on the top end face of the first mold, and a core-pulling moving end of the core-pulling power member is fixedly connected with the core-pulling tailstock and used for driving the core-pulling tailstock to reciprocate in a first direction.
4. The die-casting mold core-pulling water-spraying water-blocking device according to claim 3, wherein the driving member comprises a transmission gear, a first rack extending in a first direction, and a second rack extending in the first direction; the first rack is arranged on the side wall surface of the water-proof unit, which faces the core pulling tail seat, the second rack is arranged on the core pulling tail seat, and the transmission gear is respectively meshed with the first rack and the second rack and is used for driving the second rack to reversely move when the first rack moves.
5. The water-proof device for die-casting mold core pulling spraying water according to any one of claims 1-3, wherein the driving member comprises a telescopic member arranged on the first mold, and a telescopic end of the telescopic member is fixedly connected with the water-proof unit and is used for driving the water-proof unit to reciprocate along a first direction.
6. The water-proof device for spraying water in core pulling of die casting dies according to any one of claims 1-4, wherein at least one water collecting hole is formed in the top end face of the core pulling tail seat and used for collecting water scraps on the core pulling tail seat, and at least one water soaking sensor is arranged at the bottom of each water collecting hole and used for detecting whether cooling water exists in the water collecting hole.
7. The water-blocking device for spraying water by core-pulling of die-casting molds according to any one of claims 1 to 4, wherein at least one guiding component is further arranged between the water-blocking unit and the first mold, and each guiding component extends along a first direction and is used for guiding the water-blocking unit to reciprocate along the first direction.
8. The die-casting mold core-pulling water-spraying device according to claim 7, wherein the guide assembly comprises one or more of a chute slider or a chute roller.
9. The water-blocking device for core-pulling spraying water of a die-casting mold according to any one of claims 1-4 and 8, wherein the length of the blocking plane is greater than the length of the core-pulling tailstock, and the width of the blocking plane is greater than the width of the core-pulling tailstock.
10. A water-proof method of die-casting mold core-pulling spraying water, which is characterized in that the water-proof device of the die-casting mold core-pulling spraying water is used for preventing cooling water scraps from flowing into a cavity from a gap between a core-pulling tail seat and a core-pulling needle in the cooling process of a first mold; The spraying cooling water-proof method comprises the following steps: Driving a second mold to move relative to the first mold, and opening a cavity of the first mold; driving the loose core tailstock to move away from the cavity, and driving the water-proof unit to completely shield the side wall surface of the loose core tailstock corresponding to the gap on the loose core tailstock; Taking out the die-casting workpiece in the cavity; spraying cooling water to the cavity of the first die and the cavity of the second die to cool until the first die and the second die cool to the working temperature of the dies; the core pulling tail seat moves towards the cavity and drives the water-proof unit to be completely separated from the side wall surface of the first die; and the second die moves relative to the first die to be matched with the first die, so that a complete cavity is formed.

Description

Water-proof device and method for die casting mold core-pulling spraying water Technical Field The invention belongs to the technical field of high-pressure casting, and particularly relates to a water-proof device and method for core-pulling spraying water of a die-casting mold. Background The high-pressure casting is an efficient and precise metal forming method, in the cooling solidification process of injecting metal aluminum liquid into a mold cavity, if water exists in the mold, product defects are easily caused along with the entering of the aluminum liquid, the mold is cooled after the product is taken out after each injection, the condition that spraying water splashes to a core-pulling tail seat part sometimes exists in the spraying process, and the water flows into the mold through a fit gap between a core-pulling needle and the core-pulling tail seat under the action of gravity, so that the mold has the condition of dripping water in the core-pulling needle and the like, and then the water drops exist in the mold, and further, the quality of a finished product of a die-casting product in the cavity is greatly influenced. In order to avoid the cooling process of the mould, sprayed cooling water flows into the mould cavity from between the core-pulling needle and the core-pulling tailstock, glass cement is filled in a gap between the core-pulling needle and the core-pulling tailstock in the prior art, and the gap between the core-pulling needle and the core-pulling tailstock can be blocked after the glue is solidified, so that the effective waterproof effect of the mould cavity is realized. The gap between the core-pulling needle and the core-pulling tailstock is plugged by glue, so that part of the movable core-pulling needle which can relatively move relative to the core-pulling tailstock cannot realize the relative movement between the core-pulling needle and the core-pulling tailstock, and the fixed core-pulling needle fixed on the core-pulling tailstock cannot realize the convenient replacement of the fixed core-pulling needle from the core-pulling tailstock when the fixed core-pulling needle breaks, and the replacement of the core-pulling needle can be realized only by completely removing the glue in the gap between the core-pulling needle and the core-pulling tailstock, which usually has higher overhaul and maintenance cost. Disclosure of Invention Aiming at one or more of the defects or improvement requirements in the prior art, the invention provides a water-proof device and a method for die casting die core-pulling spraying water, which can be simultaneously applied to a core-pulling tail seat provided with a movable core-pulling needle and a fixed core-pulling needle, and can effectively prevent spraying cooling water from flowing into a die cavity from a gap between the core-pulling needle and the core-pulling tail seat in the die cooling process on the premise of ensuring the relative movement between the core-pulling needle and the core-pulling tail seat, thereby providing effective guarantee for the quality of a finished product of a die casting. In order to achieve the above object, the present invention provides a water-proof device for spraying water during core pulling of a die-casting mold, for water-proof a gap between a core pulling tailstock and a core pulling needle when cooling, wherein the water-proof device is disposed on a side wall surface of a first mold provided with a cavity, and comprises: The waterproof unit is arranged on the first die corresponding to the core-pulling tail seat, a blocking plane is arranged on the end face, facing the core-pulling tail seat, of the waterproof unit, the blocking plane is in sliding fit with the side wall surface, facing away from the first die, of the core-pulling tail seat, and the gap is blocked from being located in the region of the core-pulling tail seat; The driving members are arranged between the first die and the water-proof unit, and are configured to drive the water-proof unit to completely shield the side wall surface of the core-pulling tail seat corresponding to the gap on the core-pulling tail seat when the first die is cooled, and drive the water-proof unit to completely separate from the side wall surface of the cavity of the first die when the first die and the second die are clamped. As a further preferred aspect of the present invention, the first mold is provided with a notch communicating with the cavity from the top end face in a first direction, and the core back tailstock is provided in the notch. As a further preferable mode of the invention, a core-pulling power member is arranged on the top end face of the first die, and a core-pulling moving end of the core-pulling power member is fixedly connected with the core-pulling tailstock and is used for driving the core-pulling tailstock to reciprocate in a first direction. As a further preferred aspect of the present invention, the driving member includes a