一种用于挤出吹塑的吹针驱动机构

Abstract

本实用新型涉及吹塑机技术领域，具体是一种用于挤出吹塑的吹针驱动机构，包括安装板顶面固定连接有多个气缸，移动板顶面与多个所述气缸的活动端固定连接，所述移动板顶面开设有圆形通孔。本实用新型中，通过将安装板与机体进行连接，启动多个气缸带动移动板下移，使筒体抵在模具表面，而后启动高压气泵使气体从模具进气口进入模具内部，启动伺服电机带动导轮转动，使导轮依靠弧形卡条拨动滑管上环形槽带动滑管移动，使滑管底端进入模具内部至合适位置，继而启动气体增压泵使气体通过滑管底端进入模具内部，从而通过从模具进气口处以及模内两处对模具内物料进行吹气，从而使产品壁厚可以更加均匀并可提高产品成型速度。

Claims

1. A blow pin drive mechanism for extrusion blow molding characterized by, include: The mounting plate (100) has multiple cylinders (110) fixedly connected to its top surface. The top surface of the movable plate (200) is fixedly connected to the movable ends of the plurality of cylinders (110), and the top surface of the movable plate (200) is provided with a circular through hole; An air blowing mechanism (300) is fixedly sleeved with the circular through hole. The air blowing mechanism (300) includes a cylinder (310), and the outer wall of the cylinder (310) is fixedly sleeved inside the circular through hole. A connecting pipe (320) is fixedly connected to the outer wall of the cylinder (310), and a high-pressure air pump is provided in the connecting pipe (320). The connecting pipe (320) and the high-pressure air pump are connected through a conduit. The cylinder (310) has a bottom-open structure, and a sliding hole is opened at the top of the cylinder (310). A sliding tube (330) is slidably sleeved inside the sliding hole. A gas booster pump is provided in the sliding tube (330), and the top of the sliding tube (330) is connected to the gas booster pump through a hose. The adjustment mechanism (400) is fixedly connected to the top surface of the movable plate (200).

2. A blow pin drive mechanism for extrusion blow molding as defined in claim 1, wherein, The inner wall of the cylinder (310) is fixedly fitted with a collar (340), and the bottom surface of the collar (340) is provided with multiple air outlets. The slide tube (330) is slidably fitted inside the collar (340).

3. A blow pin drive mechanism for extrusion blow molding as defined in claim 2, wherein, The inner wall of the collar (340) is fixedly sleeved with the limiting tube (341), and the sliding tube (330) is slidably sleeved inside the limiting tube (341).

4. A blow pin drive mechanism for extrusion blow molding as defined in claim 1, wherein, A sealing ring (312) is fixedly sleeved on the inner side wall of the sliding hole at the top of the cylinder (310), and the sliding tube (330) is slidably sleeved inside the sealing ring (312).

5. A blow pin drive mechanism for extrusion blow molding as defined in claim 4, wherein, A sealing gasket (311) is fixedly sleeved at the bottom end of the cylinder (310).

6. A blow pin drive mechanism for extrusion blow molding according to any of claims 1 or 5, characterized in that, The adjustment mechanism (400) includes: A connecting plate (410) is located above the moving plate (200). Multiple support plates are fixedly connected between the connecting plate (410) and the moving plate (200), and the top end of the sliding tube (330) penetrates the top surface of the connecting plate (410). Two U-shaped plates (420) are fixedly connected to the top surface of the connecting plate (410), and the two U-shaped plates (420) are located on opposite sides of the slide tube (330); Two guide wheels (430) are rotatably connected between the two arms of the two U-shaped plates (420). Multiple arc-shaped clips (431) are fixedly connected to the outer wall of each guide wheel (430). Multiple annular grooves (331) are opened on the outer wall of the slide tube (330). Each arc-shaped clip (431) is engaged with the adjacent annular groove (331).

7. A blow pin drive mechanism for extrusion blow molding as defined in claim 6, wherein, The top surface of the connecting plate (410) is fixedly connected to a motor box (440), and the motor box (440) is equipped with a servo motor and a reducer. The servo motor is connected to the reducer, and the output end of the reducer is fixedly connected to a guide wheel (430) axle.

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