Three-dimensional filaments-linked structure manufacturing apparatus, manufacturing method of three-dimensional filaments-linked structure, and mattress core material

1. A manufacturing apparatus for manufacturing a three-dimensional filaments-linked structure in which filaments are tangled sterically, comprising:

divided weight information acquisition means for acquiring divided weight information per block, by dividing weight distribution in a height direction of a person, in virtual planes orthogonal to a height axis extending from a top of a head of the person toward a heel of the person and disposed at intervals, the divided weight information acquisition means being further for recording the divided weight information respectively acquired per block, in correlation with a distance of each respective block in a height axis direction from a starting point of the top of the head; and

three-dimensional linked structure formation means for making an extruder extrude a thermoplastic resin material in continuous lines via plural nozzles, tangles and fuses filaments of the thermoplastic resin material extruded in a three-dimensional net shape, for cooling the filaments while transferring the filaments, and for forming a three-dimensional filaments-linked structure relatively long in a product streaming direction,

the three-dimensional linked structure formation means including filament density control means for controlling filament density based on the divided weight information recorded in the divided weight information acquisition means, the filament density being a filament density of a region corresponding to each respective block of the formed three-dimensional filaments-linked structure in the product streaming direction.

2. The three-dimensional filaments-linked structure manufacturing apparatus of claim 1 , wherein

the three-dimensional linked structure formation means further includes:

marking material loading means for loading a marking material at a position on an upstream side with respect to fusion of the filaments of the thermoplastic resin material in the three-dimensional linked structure formation means; and

cutting means for cutting the relatively long three-dimensional filaments-linked structure after being cooled, in a product width direction, orthogonal to the product streaming direction, and

in conjunction with changing of the filament density of the three-dimensional filaments-linked structure in the product streaming direction by the filament density control means, based on the divided weight information, the marking material loading means is configured to load the marking material on a front position on the upstream side with respect to the fusion of the filaments, and the cutting means is configured to cut the relatively long three-dimensional filaments-linked structure at a position, using the marking material when loaded, as an indicator.

3. The three-dimensional filaments-linked structure manufacturing apparatus of claim 1 , wherein

the divided weight information acquisition means and the three-dimensional linked structure formation means are located at locations remote from each other, are mutually connected via a communication line, and are configured such that the divided weight information is transmittable from the divided weight information acquisition means to the three-dimensional linked structure formation means.

4. The three-dimensional filaments-linked structure manufacturing apparatus of claim 1 , wherein the three-dimensional filaments-linked structure is for a core material of a mattress.

5. A manufacturing apparatus for manufacturing a three-dimensional filaments-linked structure in which filaments are tangled sterically, comprising:

3-D image capture apparatus to acquire divided weight information per block, by dividing weight distribution in a height direction of a person, in virtual planes orthogonal to a height axis extending from a top of a head of the person toward a heel of the person and disposed at intervals, including

image processor to record the divided weight information respectively acquired per block, in correlation with a distance of each respective block in a height axis direction from a starting point of the top of the head; and

three-dimensional linked structure forming apparatus including

an extruder to extrude a thermoplastic resin material in continuous lines via plural nozzles, tangles and fuses filaments of the thermoplastic resin material extruded in a three-dimensional net shape,

a vessel to cool the filaments while transferring the filaments, to form a three-dimensional filaments-linked structure relatively long in a product streaming direction,

a filament density controller to control filament density based on the divided weight information recorded, the filament density being a filament density of a region corresponding to each respective block of the formed three-dimensional filaments-linked structure in the product streaming direction.

6. The three-dimensional filaments-linked structure manufacturing apparatus of claim 5 , wherein

the three-dimensional linked structure forming apparatus further includes:

marking material supplier to supply a marking material at a position on an upstream side with respect to fusion of the filaments of the thermoplastic resin material; and

cutter to cut the relatively long three-dimensional filaments-linked structure after being cooled, in a product width direction, orthogonal to the product streaming direction, and

in conjunction with changing of the filament density of the three-dimensional filaments-linked structure in the product streaming direction, based on the divided weight information, the marking material is configured to be loaded on a front position on the upstream side with respect to the fusion of the filaments, and the cutter is configured to cut the relatively long three-dimensional filaments-linked structure at a position, using the marking material when loaded, as an indicator.

7. The three-dimensional filaments-linked structure manufacturing apparatus of claim 5 , wherein the 3-D image capture apparatus and the three-dimensional linked structure forming apparatus are located at locations remote from each other, are mutually connected via a communication line, and are configured such that the divided weight information is transmittable from the 3-D image capture apparatus to the three-dimensional linked structure forming apparatus.

8. The three-dimensional filaments-linked structure manufacturing apparatus of claim 5 , wherein the three-dimensional filaments-linked structure is for a core material of a mattress.