A core-pulling mechanism and core-pulling method for a plastic trash can mold lid

Abstract

The invention discloses a container cover core-pulling mechanism of a plastic waste container mold and a core-pulling method of the container cover core-pulling mechanism. The container cover core-pulling mechanism is characterized by comprising a fixed mold part and a moving mold part, wherein a mold cavity is formed between the fixed mold part and the moving mold part; a waste container is formed in the mold cavity; opening baffle plates are arranged at the container opening of the waste container; first forming surfaces are arranged on the mold cavity on one side of the fixed mold part; piston cavities and slip cavities are formed in the fixed mold part; piston rods being in seal and slip fit with the piston cavities are arranged on the moving mold part; forming blocks are in slip connection with the interior of the slip cavities; the upper side walls of the forming blocks serve as second forming surfaces which are used for forming the sides, far away from the waste container body, of the opening baffle plates; tension springs used for driving the forming blocks to move along the slip cavities till being separated from the sides, far away from the waste container body, of the opening baffle plates are arranged on the fixed mold part; inflatable air bags are arranged in the slip cavities; and the interiors of the inflatable air bags communicate with those of the piston cavities through inflatable air channels. Through the above technical scheme, the plastic waste container production efficiency can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of plastic mold manufacturing tools, in particular to a plastic trash can mold lid core-pulling mechanism and a core-pulling method thereof. Background technique [0002] Traditional plastic trash can moulds, such as a Chinese utility model patent with the notification number CN202448310U, a pull plate stripping mechanism for plastic trash can molds, include an upper double plate and a lower double plate of the mould, the upper double plate is connected to the fixed formwork, and the fixed formwork is connected The mold cavity, the movable template is installed on the lower double plate, the core is installed on the movable template, the mold cavity is formed between the mold core and the mold cavity, and there is a molded trash can in the mold cavity, the tie rod fixing plate is installed under the mold cavity, and the tie rod A pull rod is connected under the fixing plate, and the pull rod is connected wit...

AI Technical Summary

Problems solved by technology

[0003] When demoulding, firstly, the power of the injection molding machine drives the movable template to open the mold, so that the core installed on the movable template is separated from the cavity, and the trash can stays on the core and moves with the core. Tie rod fixing plate, the tie rod is connected to the tie rod under the tie rod fixing plate, the tie rod is connected to the pull plate, and the pull plate is in contact with the mouth baffle of the trash can. The barrel is pulled, while the core continues to move, and is drawn out from the trash can until the mold opening is completed, see the attached figure 1 , the mouth of the traditional trash can is provided with a mouth baffle. During the demoulding process, the mouth baffle is stuck between the pull plate and the cavity. After the mold opening of the movable template and the fixed template is completed, in fact, The entire trash can is still stuck on the cavity, and the pull plate needs to be removed manually before the entire trash can can be taken out. The production efficiency is still not improved much.

Images