JPH0134759B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for cutting quantitatively and accurately dropping lining material into a crown cap.

Conventionally, in the process of introducing a lining material into a crown cap or the like to form a liner, a device that cuts and drops a certain amount of the lining material is placed approximately twice the vertical line of the exit nozzle of the lining material extrusion device. Shafts incorporating lining material cutting blades are installed parallel to each other in equally divided positions, and the cutting blade shafts rotate in opposite directions at synchronous speeds to cut a fixed amount of lining material and cut the lining material downward. A device has been proposed in which the liquid is dropped into a crown cap or the like on a conveyor.

However, in this conventional method, the cutting blade is rotated at a constant speed, so unless the conveyor speed is higher than the speed at which the lining material and the cutting blade come into contact with each other, the initial speed of the lining material that has been cut in a fixed amount will drop. However, there was a drawback that the contact swing between the cutting blade and the cut lining material varied, making it unstable to drop and insert the lining material into the crown cap, etc., resulting in liner defects.

The present invention aims to eliminate these drawbacks and provide a device for accurately and reliably dropping and introducing lining material into a crown cap or the like.

To explain the present invention based on the drawings, as shown in FIG. 1, the lining material extrusion nozzle 3 is located above the crown cap etc. 6 on the conveyor 7, and the extruded lining material 4 is located at a position where the extruded lining material 4 is approximately bisected. Cutting shafts 1a and 1b are provided at positions facing each other,
The cutting blades 2a and 2b are attached to each cutting shaft so that the blades interlock on opposing lines, and the cutting shafts 1a,
1b is assembled so as to rotate in opposite directions by gears 5a and 5b, as shown in FIG.

Conventionally, this cutting shaft was driven by a constant velocity gear synchronized with the conveyor drive.
In the present invention, in order to perform non-uniform rotation, the cutting shaft 1a or 1b, to which a gear 5a or 5b (5b in the drawing but may be either), is driven from the counter shaft 10. By the engagement of non-circular gears (elliptical gears) 8 and 9,
The rotational speeds of the cutting blades 2a and 2b are made non-uniform. However, the cutting shafts 1a, 1b and the conveyor 7 are synchronized. Also, as shown in Fig. 3, the cutting shafts 1a, 1
b is a non-circular gear 8, which has the highest speed when the cutting edge cuts the lining material 4 and separates from the lining material 4 to form a lining material piece 4';
Assemble 9. In other words, it gradually accelerates from the P ₀ point, cuts the lining material 4 at the P ₁ point, reaches the maximum speed at the P ₂ point, and gradually decelerates after this point, passing through P ₀ again. As the speed increases, non-circular gears (elliptical gears) are installed to gradually increase the speed. In the present invention, a drive device using an elliptical gear is advantageous, but other methods such as a special leaf gear linkage mechanism, a special cam mechanism, etc. can also be used to rotate the cutting blade at a non-uniform speed. That is clear.

As mentioned above, in order to introduce more stable lining material, an appropriate falling speed is required, and in order to make the speed near cutting the appropriate falling speed regardless of the speed of the conveyor 7, it is necessary to By replacing the non-uniform gear, the crown cap etc.6
A correct and stable lining material can be dropped into the interior.

As described above, according to the present invention, the lining material can be accurately and stably supplied into the crown cap etc. with a simple mechanism.

[Brief explanation of drawings]

FIG. 1 is a simplified front view of the apparatus of the present invention. FIG. 2 is a simplified perspective view of various relationships in the apparatus of the present invention. FIG. 3 is an explanatory diagram of the cutting blade of the present invention. 1a, 1b... Cutting shaft, 2a, 2b... Cutting blade, 3... Extrusion nozzle, 4... Lining material,
5a, 5b...gear, 6...crown cap, etc., 7
... Conveyor, 8 ... Non-circular gear, 9 ... Non-circular gear, 10 ... Counter shaft.

Claims (1)

[Scope of Claims] 1. A conveyor device that advances the crown cap etc. at regular intervals, a device that extrudes the lining material that has become plastic, and a device that cuts the extruded lining material into a fixed amount along the flow direction. In an apparatus for accurately dropping a predetermined amount of lining material into a crown cap or the like, comprising two opposing, synchronized lining material cutting blades and a drive for rotating the cutting blades in correspondence with a conveyor; The drive device gradually speeds up or decelerates as the outer end of the cutting blade approaches the lining material and cuts the lining material in accordance with the speed of the conveyor;
A lining material feeding device characterized in that the cutting blade is driven to rotate at an optimum speed at a non-uniform speed such that the cutting blade gradually decelerates or accelerates as the lining material and the cutting blade separate from each other. 2. The drive device includes a first non-circular gear and a first non-circular gear connected to the cutting blade drive source synchronized with the conveyor drive.
The lining material feeding device according to claim 1, further comprising a second non-circular gear connected to the cutting blade drive shaft, which engages with the non-circular gear.