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CN-224210437-U - Vacuum air passage structure of automobile steering wheel air bag mold

CN224210437UCN 224210437 UCN224210437 UCN 224210437UCN-224210437-U

Abstract

The utility model discloses a vacuum air passage structure of an automobile steering wheel air bag die, which comprises a fixed die bottom plate, a cooling water pipe and air pipes, wherein a fixed die core is connected to the fixed die bottom plate, a movable die core is arranged at the top of the fixed die core, a movable die top plate is connected to the top of the movable die core, a male die is arranged at the center of the inside of the movable die core, a female die is arranged at the center of the inside of the fixed die core, flow passages and air passages are respectively arranged in the male die and the female die, a plurality of groups of air pipes are mutually communicated and uniformly distributed in the movable die core and used for discharging air in a die cavity, and the problems of unsmooth air discharge and uneven air pressure distribution in the die are effectively solved by uniformly distributing a plurality of mutually communicated air pipes in the movable die core and utilizing a vacuum generator to extract air in the die cavity. The air bag after injection molding has the advantages that the defects of wrinkles, uneven thickness, uneven surface and the like are avoided, and the appearance quality and the structural stability of the air bag are greatly improved.

Inventors

  • XIE BING
  • Ji Xiongxiong
  • QIU FUPING

Assignees

  • 昆山明佰精密模塑有限公司

Dates

Publication Date
20260508
Application Date
20250520

Claims (8)

  1. 1. A vacuum airway structure of an automobile steering wheel airbag die, comprising: the novel mold comprises a fixed mold bottom plate (1), wherein a fixed mold core (2) is connected to the fixed mold bottom plate (1), a movable mold core (3) is arranged at the top of the fixed mold core (2), a movable mold top plate (4) is connected to the top of the movable mold core (3), a male mold (5) is arranged at the inner center of the movable mold core (3), a female mold (6) is arranged at the inner center of the fixed mold core (2), and a flow passage (7) and an air passage (8) are respectively arranged in the male mold (5) and the female mold (6); the cooling water pipes (9) are provided with a plurality of groups, and the cooling water pipes (9) are communicated with each other and are respectively arranged in the fixed die core (2) and the movable die core (3) and used for cooling the air bag die after injection molding; The air pipes (10), the air pipes (10) are provided with a plurality of groups, and the groups of air pipes (10) are mutually communicated and uniformly distributed in the movable die core (3) and used for exhausting air in the die cavity.
  2. 2. The vacuum air passage structure of the automobile steering wheel air bag mold according to claim 1, wherein a vacuum generator (11) is arranged in the fixed mold core (2), one end of the vacuum generator (11) is communicated with one group of air pipes (10), water dividing blocks (12) are arranged on the fixed mold core (2) and the movable mold core (3), and a plurality of cooling water connectors (13) used for being communicated with the cooling water pipes (9) are arranged on the water dividing blocks (12).
  3. 3. The vacuum air passage structure of the automobile steering wheel air bag mold according to claim 1, wherein a runner regulating valve (14) is arranged on the surface of the movable mold core (3) and in the runner (7), and an inclined top (15) and a straight top (16) are arranged on the male mold (5).
  4. 4. The vacuum air passage structure of the automobile steering wheel air bag mold according to claim 1, wherein the surface of the movable mold core (3) is connected with a plurality of guide posts (17), and one side of the movable mold core (3) is provided with a control system terminal box (18).
  5. 5. The vacuum air passage structure of the automobile steering wheel air bag mold is characterized in that hanging rings (19) are arranged on the surfaces of the fixed mold core (2) and the movable mold core (3).
  6. 6. The vacuum air passage structure of the automobile steering wheel air bag mold according to claim 1, wherein the fixed mold core (2) is provided with a hot runner junction box (20) and a needle valve air passage joint (25), and the fixed mold core (2) is provided with a needle valve hot nozzle (21) at one side of the female mold (6).
  7. 7. The vacuum air passage structure of the automobile steering wheel air bag mold according to claim 4, wherein a thermometer (22) is arranged in the fixed mold core (2), a plurality of guide sleeves (23) are further arranged in the fixed mold core (2), and guide posts (17) are inserted into the guide sleeves (23).
  8. 8. The vacuum air passage structure of the automobile steering wheel air bag mold according to claim 1, wherein a lock module (24) is arranged in the fixed mold core (2).

Description

Vacuum air passage structure of automobile steering wheel air bag mold Technical Field The utility model belongs to the technical field of airbag molds, and particularly relates to a vacuum air passage structure of an automobile steering wheel airbag mold. Background In the passive safety system of the automobile, the safety airbag is a key component for guaranteeing the life safety of drivers and passengers, and the safety airbag of the steering wheel of the automobile is required to be formed by injection molding through an airbag mold during production. At present, automobile steering wheel air bag mould is in the injection moulding in-process, because the inside plastics dwell time overlength in the mould of mould when injection moulding, and plastics just can take place thermolysis reaction, produce various gases and can produce gas, and once but the gas in the mould is discharged unsmoothly, the problem such as atmospheric pressure distribution is uneven, the air bag that leads to after injection moulding easily appears fold, uneven thickness, defects such as surface unevenness, thereby influence air bag's expansion performance and reliability, in addition, in air bag's rapid prototyping in-process, if unable in the timely air in the effective discharge mould die cavity of discharging, the air residue can form the air lock, hinder the flow and the packing of material, and then reduction in production efficiency, the increase rejection rate. Disclosure of utility model The utility model aims to provide a vacuum air passage structure of an automobile steering wheel air bag mold, which aims to solve the problems in the background art. In order to achieve the purpose, the utility model provides the following technical scheme that the vacuum air passage structure of the automobile steering wheel air bag mold comprises: The fixed die comprises a fixed die bottom plate, wherein a fixed die core is connected to the fixed die bottom plate, a movable die core is arranged at the top of the fixed die core, a movable die top plate is connected to the top of the movable die core, a male die is arranged at the inner center of the movable die core, a female die is arranged at the inner center of the fixed die core, and a flow channel and an air channel are respectively arranged in the male die and the female die; The cooling water pipes are provided with a plurality of groups, are communicated with each other and are respectively arranged in the fixed die core and the movable die core, and are used for cooling the air bag die after injection molding; The air pipes are provided with a plurality of groups of air pipes which are communicated with each other and uniformly distributed in the moving die core and used for exhausting air in the die cavity. Preferably, a vacuum generator is arranged in the fixed die core, one end of the vacuum generator is communicated with one group of air pipes, water distribution blocks are arranged on the fixed die core and the movable die core, and a plurality of cooling water connectors used for being communicated with the cooling water pipes are arranged on the water distribution blocks. Preferably, a runner regulating valve is arranged on the surface of the movable die core and in the runner, and an inclined top and a straight top are arranged on the male die. Preferably, the surface of the movable mould core is connected with a plurality of guide posts, and one side of the movable mould core is provided with a control system terminal box. Preferably, the surfaces of the fixed die core and the movable die core are provided with hanging rings. Preferably, the fixed die core is provided with a hot runner junction box and a needle valve gas path connector, and a needle valve type hot nozzle is arranged on one side of the fixed die core and positioned on the female die. Preferably, a thermometer is arranged in the fixed die core, a plurality of guide sleeves are further arranged in the fixed die core, and guide posts are inserted into the guide sleeves. Preferably, a locking module is arranged in the fixed die core. Compared with the prior art, the utility model has the beneficial effects that: (1) Through equipartition a plurality of air pipes of switch-on each other in movable mould benevolence to utilize the inside air of vacuum generator extraction mould die cavity, effectively solved the problem that the gas discharge is unsmooth in the mould, the atmospheric pressure distributes unevenly. The air bag after injection molding has the advantages that the defects of wrinkles, uneven thickness, uneven surface and the like are avoided, and the appearance quality and the structural stability of the air bag are greatly improved. (2) The cooling water pipes which are mutually communicated are arranged, and the cooling water pipes are reasonably distributed in the fixed die core and the movable die core, so that the air bag die after injection molding can be rapidly and uniformly cooled, the