JP4297901B2 - Interior material separator for excrement absorbers such as disposable diapers - Google Patents

Description

  The present invention relates to an apparatus for separating and collecting fiber materials such as pulp and interior materials such as a water-absorbing polymer from defective products produced when excrement absorbers such as paper diapers and sanitary napkins are manufactured.

  In a paper diaper, a fibrous material such as pulp and a granular water-absorbing resin (polymer) are mixed in a bag-shaped exterior material. When defective products are produced in the manufacturing process of disposable diapers, interior materials such as these water-absorbing polymers and pulp materials are crushed and separated and recovered from the inside of the disposable diaper.

A device described in Patent Document 1 is known as such a separation and recovery device. In this apparatus, a paper diaper is cut into fine pieces and fed into a cylindrical basket, and this is stirred with a stirring rod arranged in a spiral shape on the central axis of the car, separating pulp material and water-absorbing polymer, and The remaining exterior material scraps are removed from the other end of the basket. However, this method has a problem that the pulp material cannot be well separated due to entangled cutting material scraps.
JP-A-8-117688

  This invention makes it a subject to isolate | separate and collect a fiber material and a water absorbing polymer reliably from the inferior goods produced when manufacturing excrement absorbers, such as a paper diaper and a sanitary napkin.

A device according to the present invention is provided along a conveyor that carries a slenderly cut excrement absorber on a slat-like band, and blows air toward the sag-like band from above. a plurality of injection nozzles are opened mouth under duckboard-shaped band member, ing from the suction hopper leading to a vacuum suction device.

  A paper diaper (or sanitary napkin or the like) to be processed is first cut into an elongated shape by a cutting machine, and this is carried on a slat-like band of a conveyor. A plurality of air injection nozzles are provided on the slat-like belt body, and the cut and released paper diapers are separated into an exterior material and an interior material. Most of the outer trimmed material is caught on the slat-like band and cannot pass through the slat. On the other hand, the interior material (pulp and water-absorbing polymer particles) separated from the exterior material is blown down from between the eyes by the jet of air. In this way, the exterior material and the interior material are separated. On the other hand, after passing through the slats, the interior material falls into a suction hopper and is sucked and collected by a vacuum suction machine. The collected interior material is then separated into pulp and water-absorbing polymer by utilizing the specific gravity difference.

  In this device, a piece of paper diaper is placed on a slat-like band and moved, and air is sprayed from above to blow only the interior material down from between these eyes. There is an effect that the separation of the material and the exterior material is performed reliably. Further, the paper diaper to be processed can be surely separated from the entangled interior material by the air-jetting of the string-shaped exterior material.

Grates shaped strip of conveyor, along each of the right and left conveyor chains, Ru can be composed of the left and right comb member mounted for facing tip ends.

The left and right comb-like member, when turned to the back side of the conveyor, that make up so as to be inclined in shape of inverted "C". Although the slender exterior material scraps are entangled with the comb teeth and are difficult to fall off, by slanting the combs in this way, the exterior material wastes easily slide down along the comb teeth. Thus in order to recover the external material debris falling from the back side of the conveyor, it is not preferable that along the conveyor to install a second belt conveyor under it.

  In FIG. 1, reference numeral 10 denotes a cutting machine that cuts a paper diaper into an elongated shape, and reference numeral 20 denotes a conveyor that moves by moving the cut paper diaper.

  The cutting machine 10 includes a plurality of circular blades 11 attached to a rotating shaft at intervals. The paper diaper 1 put into the hopper 12 is fed onto the conveyor belt 13 and fed into the circular blade 11 and cut into a string having a width of about 10 mm. The cut one is supplied to the conveyor 20 by the conveying belt 14 on the opposite side.

  Next, the conveyor 20 will be described. As shown in FIG. 2, an endless transmission chain 23 is wound around a plurality of sprockets 22 rotatably supported by a machine frame 21. A saw-like band 24 is supported between the left and right chains 23, and the paper diaper 1 cut into a string shape is carried on this. Reference numeral 26 denotes a drive motor for the conveyor.

  As shown in detail in FIGS. 3 and 4, the squirrel-shaped belt body 24 is configured by arranging comb-like members 25 side by side. The comb-shaped member has a plurality of comb teeth 25a (length is about 250 mm) attached in parallel to a support member 25b formed by bending a metal plate. It is an elongated rectangle, and a gap of about 10 mm is formed between the comb teeth. Each of the left and right chains 23 is composed of two inner and outer chains, and the comb-like member 25 is attached to the inner and outer chains via the mounting bracket 23a so that the comb teeth 25a are kept horizontal. Be drunk. The left and right comb-like members 25 are attached so that the tips of the comb teeth are brought into contact with each other and not spaced from each other.

  As shown in FIG. 2, the sprocket 22 a that guides the conveyor chain on the lower side of the conveyor and the return stroke is inclined so that the shaft is not horizontal but descends inward. Accordingly, the teeth 25a of the left and right comb-like members are reversely “C” -shaped when they reach the return stroke so that the gaps are opened.

  A blower duct 30 led from a blower is provided immediately above the slat-like belt body 24, and air jet nozzles 31 are densely arranged vertically and horizontally on the lower surface of the duct. Further, a suction hopper 32 connected to a vacuum suction machine is provided under the slat-like band 24.

  The paper diaper 1 that has been cut into an elongated shape by the cutting machine 10 rides on the slat-like band 24 and passes under the nozzle 31. At this time, the wind blown from the nozzle is received, the interior material is blown out from the exterior material, passes through the combs, and is sucked into the vacuum suction machine through the suction hopper 32. Most of the string-like exterior material is caught by the comb teeth 25a and shakes while receiving the wind in this state. At this time, the remaining interior material entangled with the string-like exterior material is separated.

  Thus, only the cord-like exterior material remains on the slat-like band 24, and when it reaches the conveyor lowering portion 20a, a part of it falls on the sub-conveyor 40, and the remaining portion is hooked on the comb teeth 25a, while the folded portion 20b Reach the back of the conveyor). In the folded portion, as shown in the lower side of FIG. 2, the comb teeth 25 a open in an inverted “C” shape, so that the cord-like exterior material that has been caught slides down along the comb teeth and falls on the lower belt conveyor 40. . The exterior material waste falling on the belt conveyor 40 is further sent to the compression packaging machine.

It is the side view which represented this application apparatus diagrammatically. It is a cross-sectional view similarly. It is a cross-sectional view of a conveyor belt. It is a top view of a conveyor belt | band | zone.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cutting machine 20 Conveyor 21 Machine frame 22 Sprocket 23 Transmission chain 24 Saw-like belt body 25 Comb-like member 25a Comb tooth 30 Air blow duct 31 Air injection nozzle 32 Suction hopper 40 Sub conveyor

Claims (2)

A conveyor for carrying the excrement absorber cut into a slender strip, and a plurality of spray nozzles that are provided along the slender strip and blows air from above toward the slender strip; It consists of a suction hopper connected to a vacuum suction machine that has an opening under the slat-shaped belt , and the slat-shaped belt is attached so that the front ends face each other along each of the left and right conveyor chains. An excrement absorber interior material separator configured to be configured to have a left and right comb-shaped member, and these left and right comb-shaped members are inclined in a reverse “C” shape when turned to the back side of the conveyor . The excrement absorber according to claim 1 , wherein a second belt conveyor is installed along the conveyor, and the exterior material of the disposable diaper falling from the slat-like belt is received by the belt conveyor. Interior material separator.

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