Top mould assembly used for plastic bottle cap mould pressing machine

Abstract

The present invention discloses an upper mould assembly used in the plastic bottle cap moulding press, comprising a tringle fixed on a dead plate of a turntable, an upper mould head arranged at the bottom of the tringle, a tringle inner sleeve, a tringle outer sleeve and a pressure spring which are sleeved outside the tringle, wherein, one end of the pressure spring is against the tringle, while the other end of the pressure spring is against the tringle inner sleeve, the tringle inner sleeve contacts with a convex plate limit which is arranged on the tringle, and the tringle inner sleeve is sleeved with the tringle outer sleeve, and matched with the tringle outer sleeve at the angle of taper of the lower end; a shifting fork is arranged on the tringle outer sleeve; the tringle is a hollow tube, and a cooling outer tube is inserted in the tringle, and a cooling inner tube is inserted in the cooling outer tube; the upper mould head is fixedly inserted in the lower end of the tringle along the axial direction; a cooling tube is arranged in the upper mould head, and the inlet and outlet of the cooling tube are respectively communicated with the cooling inner tube and the cooling outer tube. The technic proposal is capable of directly cooling the upper mould head, thereby increasing the cooling speed and production efficiency of the mould.

Description

technical field [0001] The invention belongs to the field of compression molding equipment for plastic bottle caps, in particular to an upper mold assembly for a plastic bottle cap molding machine. Background technique [0002] In the patent document No. 01274089.6, a plastic bottle cap molding machine is disclosed. The molding part adopts an annular cam to push the roller mandrel and the upper and lower dies connected thereto to complete mold clamping, compression molding and demoulding discharge, because the roller mandrel It is directly connected and fixed with the die bar and the upper die head (upper punch), so the upper die head cannot be directly cooled. However, the mold cannot be cooled quickly and the temperature is too high, which will directly affect the quality and production efficiency of compression molded products. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the object of the present invention is to provide ...

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Problems solved by technology

[0002] In the patent document No. 01274089.6, a plastic bottle cap molding machine is disclosed. The molding part adopts an annular cam to push the roller mandrel and the upper and lower dies connected thereto to complete mold clamping, compression molding and demoulding discharge, because the roller mandrel It is directly connected and fixed with the die rod and upper die head (upper punch), so it is impossible to directly cool the upper die head

However, the mold cannot be cooled quickly, and the temperature is too high, which will directly affect the quality and production efficiency of compression molded products.

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