JPH03186514A - Pellet arranging device - Google Patents

Abstract

PURPOSE:To make the above device for manufacturing a sheet material such as an antislip flooring material or the like compact and make the arrangement of the pellets easy and accurate by forming a plural number of pellet suctioning recesses having fine suctioning holes at specified intervals on the external surface of a drum, and disposing blades in the drum so that a normal pressure section and a negative pressure section are defined. CONSTITUTION:The space in a drum 1 is defined into a normal pressure section and a negative pressure section by disposing blades 4 and suctioning the air in the drum 1 through a suction port of the drum 1. The drum 1 is rotated so that a pellet holding recess 2 is communicated to the negative pressure section through a fine pellet suctioning hole 3 when the pellet holding recess 2 comes to the position of a hopper 7, and that the recess 2 is communicated to the normal pressure section when it comes to the position opposite a sheet material 8. With this constitution, the pellets 6 held by suctioning with the negative pressure are securely arranged and distributed on the sheet material 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pellet arrangement device for arranging pellets at predetermined intervals on a substrate.

[Conventional technology]

Plate-shaped or sheet-shaped base material (materials include plastic,
A device for arranging pellets at predetermined intervals on wood, cement products, semi-finished products, etc.) can be used, for example, to manufacture non-slip flooring materials, patterned building materials, health sandals, etc. A method of actually manufacturing a plastic plate with an embossed pattern using such an apparatus is described in Japanese Patent Publication No. 5430/1983. In this method, pellets are passed through a conveyor net that drives the drum and transports the plastic pieces (pellets) into the suction holes of a drum that has an air suction port inside and pores for sucking pellets on the entire surface. Suction, retention,
The pellets are brought into contact with a base material coated with an adhesive or the like to adhere and transfer the pellets to the base material, and after filling the spaces between the pellets with an adhesive or the like, they are integrated by thermal spacing. However, in the pellet arrangement device used in this method, the pellets are sucked through a conveyor net, so the suction is uneven, and the pellets can be placed in any state or position such as vertically, horizontally, diagonally, in the center, at the edges, etc. Due to the suction, it is difficult to arrange the pellets on the substrate in a predetermined manner. Furthermore, since a conveyor net and a roller for driving the net are required, there is also the problem that the apparatus is large.

[Problem to be solved by the invention]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems in the prior art and to provide a compact pellet arranging device that can easily and accurately arrange pellets in a predetermined manner.

[Means to solve the problem]

As shown in FIG. 1, the pellet arranging device of the present invention includes, on the outer surface of a drum 1, a plurality of pellet storage recesses 2 each having a pellet 6 suction hole 3 communicating with the inside of the drum 1.
are formed at predetermined intervals, and both ends of the blade 4 are in contact with two predetermined places on the inner surface of the drum 1, so that the blade 4 is provided with an air suction port 5 for dividing the inside of the drum 1 into a normal pressure part and a negative pressure part. It is characterized by its placement. Note 7
is a hopper, 8 is a base material, and 9 is a roller.

[For production]

The apparatus of the present invention will be explained according to FIG.
suction from. As a result, a negative pressure is created on the side of the drum 1 where the suction port 5 is located, with the blade 4 as a boundary. Since the pellets 6 are in contact with the outer surface of the drum 1 in the negative pressure section, the pellets 6 are sucked and held in the pellet storage recess 2 through the pellet suction pores 3 by this negative pressure. On the other hand, since air is not sucked on the side of the drum 1 where there is no suction port 5, the pressure remains at normal pressure across the blade. In this state, the drum 1 rotates, and the pellets 6 on the negative pressure section
When the pellets 6 reach the normal pressure part, the suction is released and the pellets 6 in the recess 2 are separated from the recess 2 and fall onto the base material 8, which is moving in the direction of the arrow at a predetermined speed, and are arranged in a predetermined manner. Ru.

In the above-described apparatus, the shape, size, and spacing of the recesses formed on the outer surface of the drum can be arbitrarily selected depending on the shape and size of the pellets, the predetermined arrangement pattern, the type of base material, etc. The shape and size of the blade; the contact position of both ends of the blade; the shape, size, and position of the air suction port can also be arbitrarily selected depending on the predetermined arrangement pattern, type of base material, economic efficiency, etc. The material of the blade is preferably rubber, soft plastic, etc. in order to prevent wear due to contact with the inner surface of the drum. Furthermore, when metal is used as the blade, rubber rollers may be provided at both ends to prevent wear. However, in this case, it is necessary to pay attention to the airtightness of both ends of the blade. The base material can be plastic, wood, cement products (concrete) or semi-finished products (
(uncured concrete) etc. can be used.

〔Example〕

A 10 mm hemispherical recess with a radius of 3 cm is placed on the entire outer surface of a drum with an inner diameter of 39.0 cm, an outer diameter of 40 cm, and a length of 100 cm.
Pellet holes were formed in the vertical and horizontal directions at intervals (pitch), and pores for sucking pellets with a diameter of 1 nwn communicating with the inside of the drum were formed. A blade (made of rubber) with an air suction port as shown in FIG. 1 was placed inside this drum. Next, a normal pressure section and a negative pressure section are created in the drum by suctioning the air inside through the air suction port of the drum, and while the drum is being rotated in this state, the diameter of the 4 ann inside the hopper is By bringing the pellet into contact with a plastic pellet, the pellet is suctioned and held in the recess in the negative pressure section, and then by releasing the suction in the normal pressure section, the pellet inside the recess moves at a predetermined speed. By dropping and adhering the pellets onto a plastic sheet, an anti-slip sheet in which pellets were regularly arranged in a predetermined manner was obtained.

〔Effect of the invention〕

As described above, the device of the present invention can directly suck and hold pellets into the recesses on the outer surface of the drum, and also can clearly divide the inside of the drum into a normal pressure section and a negative pressure section.
Pellets can be arranged more easily and accurately than before even on a base material to which no adhesive or the like is applied. Furthermore, the device itself is compact.

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view of a pellet arranging device according to an example of the present invention. 1... Drum 2... Pellet storage recess 3... Pellet suction pore 4... Blade 5... Air suction bow 6... Pellet 8... Substrate port

Claims (1)

[Claims] 1. On the outer surface of the drum, a plurality of pellet storage recesses each having pellet suction holes communicating with the inside of the drum are formed at predetermined intervals, and both ends of the blade are in contact with two predetermined locations on the inner surface of the drum. A pellet arraying device characterized in that a blade with an air suction port is arranged to divide the inside of the drum into a normal pressure section and a negative pressure section.