Air-filling device with build-in air passage

Abstract

The invention relates to an air-filling device with a build-in air passage. The conventional air-filling device of a bottle blowing machine is complex in structure, and a high-pressure hose of the conventional air-filling device is easy to leak air when being bent frequently. The air-filling device with the build-in air passage comprises a supporting seat and a sealing block with an air-filling passage, wherein the supporting seat is internally provided with a horizontal air passage, the horizontal air passage is internally provided with an air inlet and a vertical through hole, a hollow air distribution tube capable of moving in the through hole is penetrated in the through hole, the air distribution tube extends out of the through hole, the upper extending end of the air distribution tube is sealed, the outer wall of the lower extending end of the air distribution tube is connected with the sealing block, an inner cavity of the lower extending end of the air distribution tube is communicated with the air-filling passage in the sealing block, and the side wall of the air distribution tube, which is located in the horizontal air passage, is provided with an air guide hole forming the air passage between the air distribution tube and the horizontal air passage, so that the structure of a pipeline is simplified. By using the air-filling device with the build-in air passage, the problem that the hose of the air passage is damaged because of moving frequently is solved effectively, the service life of the air-filling device is prolonged, and the maintenance cost is reduced.

Description

technical field [0001] The invention relates to a bottle blowing device for manufacturing hollow blow molding containers by a two-step method, in particular to an inflating device which can effectively reduce the number of air pipes and ports. Background technique [0002] The blowing mechanism of the two-step method for manufacturing hollow blow molding containers (also known as "blow molding machine") is an important part of it. In the prior art, one end of the soft gas pipe for transporting high-pressure gas is connected to the high-pressure gas source, and the other end is connected to the sealing block with the inflatable channel inside. When the sealing block is on the working station, the sealing block moves quickly to the sealing station under the drive of the sealing cylinder, so that the inner cavity of the preform is isolated from the outside world. The stretching rod stretches the preform. At the same time, the control valve on the air pipe is opened, and the hi...

AI Technical Summary

Problems solved by technology

When the existing bottle blowing machine increases the output by increasing the number of mold bottle making stations and shortening the bottle blowing unit cycle time, there are the following problems: 1. Each bottle making station must be equipped with a corresponding sealing block, air pipe and control valve, as the number of bottle-making stations on the mold increases, the number of control valves, air pipes and the interfaces at both ends increases accordingly, resulting in an increase in the number of air pipes, complicated pipeline control, and the connection between the air pipe and the steel interface is prone to failure due to poor fit. The tightness causes air leakage and difficult maintenance; 2. The sealing block and the high-pressure air source are connected by a gas pipe. When the unit cycle time of blowing is shortened, the frequency of the sealing block's up and down reciprocating movement will inevitably increase, which will increase the bending frequency of the gas pipe, which will easily lead to It produces cracks and leaks air, which poses safety hazards and shortens its service life, increasing maintenance costs

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