The utility model relates to a sand filling tool with a small diameter curved channel, which comprises a compressed air gun with a trigger, a tail air inlet of the compressed air gun connected with a compressed air tube, a horizontal forward extending barrel connected with the front end of the compressed air gun, a conical nozzle at the front end of the barrel, a plastic bottle inserted in the middle part of the barrel, and a downward spiral connection of the bottle mouth of the plastic bottle. The bottle cap and the bottleneck of the plastic bottle are provided with two sockets running through the diameter line. The barrel passes through the two sockets. The top of the middle section of the barrel is provided with a sand-feeding hole, which is located on the axis of the plastic bottle. The inner cavity of the plastic bottle is filled with film-coated sand. The rear end of the conical nozzle is screwed to the front end of the barrel. The tapered nozzle is aligned with the port of the hole, the trigger is pulled, and the coated sand in the plastic bottle leaks into the gun tube through the sand entry hole, which is taken out by compressed air and filled into the hole. The sand filling tool can fill the small diameter bending channel with coated sand, which is easy to manufacture, low cost and good effect.
【技术实现步骤摘要】
小直径弯曲孔道的填砂工具
本技术涉及一种砂型铸造用型芯,特别涉及一种小直径弯曲孔道的填砂工具,属于金属铸造
技术介绍
型芯在铸造时用以形成铸件的内部空腔,常由砂粒和粘结剂(如粘土、桐油或树脂等)配成的芯砂,型芯在浇铸前装置在铸型内,金属液浇入冷凝后,出砂时将它清除,在铸件中即可形成空腔。普通砂芯的材质有石英砂、覆膜砂、树脂砂或红砂等材料,但强度和韧性不能兼顾,砂芯硬度过硬,则浇铸完毕后清砂困难,硬度过低则砂芯难以成型。对铸件内腔表面质量要求高,尺寸精度要求高、形状复杂的砂芯采用覆膜砂制芯是非常有效的。例如:轿车发动机缸盖的进排气道砂芯、水道砂芯、油道砂芯,气缸体的水道砂芯、油道砂芯,液压阀的流道砂芯,汽车涡轮增压器的气道砂芯等等。遇到含小直径孔道的砂芯不能采用覆膜砂直接制作,孔道的表面光洁度需要靠特定的涂料保证,成本很高;遇到低压或者压力铸造,在强压下,砂芯本身强度不能抵抗,形成溃散,使得合金液进入孔内,形成堵实,则产生废品。对于砂芯的小直径孔道可先将紫铜管通过模具制作成需要的孔道形状,在紫铜管内腔填充满覆膜砂,以提高紫铜管的强度,防止在浇注产生变形,也便于浇注后的清砂;铝合金液浇注完毕并冷却后,将紫铜管中的覆膜砂清除干净,再将铝合金制品浸没于稀硝酸中,紫铜管很快腐蚀完毕,形成需要的孔道。传统的射芯机可以将型砂均匀地射入砂箱预紧实,但是射芯机结构庞大,价格昂贵,喷出的型砂沿直线飞行,只能适用于砂箱内型砂的装填,对于紫铜管内腔的小直径且弯曲的孔道,则不适用。
技术实现思路
本技术的目的在于,克服现有技术中存在的问题,提供一种小直径弯曲孔道的填砂工具,可以向 ...
【技术保护点】
1.一种小直径弯曲孔道的填砂工具,包括设有扳机的压缩空气枪,所述压缩空气枪的尾部进气口与压缩空气管相连,所述压缩空气枪的前端出口连接有水平向前延伸的枪管,所述枪管的前端设有锥形喷口,其特征在于:所述枪管的中段插装有塑料瓶,所述塑料瓶的瓶口向下且瓶口旋接有瓶盖,所述塑料瓶的瓶颈处设有沿直径线贯通的两插接孔,所述枪管从两插接孔中穿过,所述枪管中段的顶部设有进砂孔,所述进砂孔位于所述塑料瓶的轴线上,所述塑料瓶的内腔装填有覆膜砂。
【技术特征摘要】
1.一种小直径弯曲孔道的填砂工具,包括设有扳机的压缩空气枪,所述压缩空气枪的尾部进气口与压缩空气管相连,所述压缩空气枪的前端出口连接有水平向前延伸的枪管,所述枪管的前端设有锥形喷口,其特征在于:所述枪管的中段插装有塑料瓶,所述塑料瓶的瓶口向下且瓶口旋接有瓶盖,所述塑料...
【专利技术属性】
技术研发人员:眭怀明,王堃,蔡鑫梅,
申请(专利权)人:扬州峰明光电新材料有限公司,
类型:新型
国别省市:江苏,32
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