JP2015214358A5 - - Google Patents

Description

For example, in a filling and packaging machine that fills and packs liquids such as sake, juice, coffee, and milk drinks in paper containers with stoppers, a stopper attachment device is provided in the middle of the container transport path such as a conveyor extending in the front-rear direction. Yes.
The mouthpiece mounting device is generally composed of an insertion unit for inserting a mouthpiece with a flange into a spout opened on either the left or right side wall of a cylindrical container with an upper end opening that is an intermediate form of the container, and a flange portion of the mouthpiece. And a welding unit for welding to the spout edge of the container.
For example, as shown in Patent Document 1 below, the insertion unit holds the stopper supplied to a predetermined position by the supply means and inserts it into the spout of the container raised to a predetermined level from the container transport path. It comprises a da, a pressing member from the side opposite to the insertion header press the spout edge of the container. Inserting header and the pressing member, by an air cylinder, respectively, brought forward and backward driven in the lateral direction.
In addition, as shown in Patent Document 2 below, for example, the welding unit includes an anvil that is placed in the container and receives a plug by raising the container on the container conveyance path to a predetermined level, and a mouth from the opposite side of the anvil. And a horn that pressurizes the flange portion of the stopper and the spout edge portion of the container to impart ultrasonic vibration thereto. The horn is driven back and forth in the left-right direction by, for example, mechanical drive means.

In the plug mounting device according to the second aspect of the present invention, the insertion header and the pressing member are respectively driven forward and backward by the fluid pressure cylinders, and each fluid pressure cylinder performs a predetermined operation at its stroke end. (Claim 10) .
According to the above configuration, the insertion header and the pressing member perform a predetermined operation at the stroke end of the fluid pressure cylinder that drives them, so that the stroke amount of each fluid pressure cylinder is reduced as the square dimension of the container is switched. There is no need for adjustment, and the product life of each fluid pressure cylinder is extended.

The insertion header (43) is in the form of a plate that is long in the vertical direction, and has a plug holding pad (431) at both end portions on the left side surface thereof, and is connected to the central portion of the length. The rotary shaft (46) is rotated intermittently by 180 ° by being rotated by a fluid pressure cylinder such as an air cylinder (47). A vacuum suction port (432) is opened at the center of the plug holding pad (431). In addition, the insertion header (43) is movable in the left-right direction by a linear motion mechanism such as a ball spline (10) , together with a horizontal rotation shaft (46) and a fluid pressure cylinder (47) for rotationally driving the same. The fluid pressure cylinder such as an air cylinder (48) can be driven back and forth between the stopper holding / insertion position and the standby position. The fluid pressure cylinder (48) that drives the insertion header (43) forward and backward is set so that the insertion header (43) moves to the stopper holding / insertion position and the standby position at the stroke end.