KR840001540B1 - Apparatus for preliminary formation of cushion material - Google Patents

Abstract

Appts. consists of a filament fiber(F) supplying device(11), a filament fiber(F) transporting device(12), and a scrapping device(13). A pre-formed cushion is produced from an aggregate of short synthetic fiber filaments, which have been curled or looped in three dimensions. The cshion may adopt a complex shape and varying stiffness, but maintains an uniform visible density.

Description

Cushion material preforming device

1 is a cross-sectional view of a cushion member for sheet preformed by the method of the present invention.

Fig. 2 Sectional view of final cushion member

3 is a cross-sectional view of a preform for molding the cushion member illustrated in FIG. 2.

Part 4 Perspective View of Double Rolled Filament

Front view of three-dimensional three-dimensional color filament

6 is a schematic cross-sectional view of a preforming device of a cushion member according to the present invention.

7 is an enlarged side view of the preforming apparatus of FIG.

8 to 12 cross-sectional view of the needle-like object used in the apparatus

Fig. 13 perspective view of the needle

14 is a schematic cross-sectional view of another cushioning preforming apparatus of the present invention.

15 is an enlarged side view of the preforming apparatus of FIG.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a preforming device of a cushioning material, in particular a seating material for a cushioning material used for a seat, a bed, etc. made of a synthetic fiber filament aggregate having a three-dimensional curl.

It is already known that a filament lock material having a three-dimensional curled filament cut to a predetermined dimension and then compressed into a predetermined shape while being sponged and combined with an adhesive point of the filament with an adhesive has a high resilience and breathability and excellent cushioning property. (See U.S. Patent No. 4,172,174) Further, in a cushion member having a angular contact point of a filament cross of a filament aggregate of a synthetic fiber filament aggregate having a draped curl, the filament and curl shape of the cushion member are partially The filament is formed by stretching the elastically deformed shape and forming the part where the curled filaments of various shapes are intimately fused together to reduce the load strength and to form a direction in accordance with the required load strength. The inventors have found that the Cushion material has a particularly excellent effect. (Japanese Patent Laid-Open No. 54-138,662) Such a cushioning material is a filament aggregate of a predetermined bulk density by compressing the woven filaments that have been cut by a circulation belt and / or a rope or other means. It is formed into a filament molded body on a circulating belt which is molded into a block, needled and / or rnbbing to a predetermined needle density with a needle having a barb, and then runs in a substantially horizontal direction. It is manufactured by spraying the adhesive liquid from the upper part, or by immersing the filament molded body with the adhesive liquid and then heating it on a circulating belt which is pulled out of the liquid and travels almost in the horizontal direction. However, in such a method, the density of the filament aggregate block depends on the amount (volume) of the three-dimensional filament to be supplied and the degree of compression thereof. Therefore, in order to obtain a constant density, the supply amount and the compression rate of the three-dimensional filament are kept constant. Needs to be.

Nevertheless, it is relatively easy to keep a degree of compression constant, but it is extremely difficult to keep a constant amount of supply.

That is, since the three-dimensional filament is easily compressed even by extremely low pressing pressure and its volume is changed, it is usually supplied by wind power using a sea sponge or the like.

For this reason, since the supply amount fluctuates depending on the fluctuation of the air volume, the amount of the three-dimensional filament supplied to the sponge, it is difficult to make the amount of the three-dimensional filament supplied on the belt conveyor constant, for example. The surface of becomes a wave form.

In order to make the layer height constant, it may be considered to use a plate. However, since the three-dimensional filament such as electricity is easily compressed by a small pressure, it is difficult to obtain a constant layer height. There was a changing flaw.

In addition, the conventional method described above is asymmetrical in the form of up and down asymmetry, like the cushioning material for automobile seats, although it can be applied to continuously producing rectangular and uniform cushioning properties (hardness) and thickness in bed cushioning materials. There was a drawback in that it was difficult to apply to the manufacture of cushioning materials having different hardness distributions.

For example, in the case of manufacturing the sheet cushion material 1 of the shape as illustrated in FIG. 1, the surface shape is formed by attaching a forming mold on the endless belt to the bottom surface so that the back surface is downward. Although possible, it is extremely difficult to automatically form the lower concave structure 2 by a mechanical method.

As illustrated in FIG. 2, when the cushioning material 3 for the sheet does not have a recessed structure in the final shape, the hardness of the central portion 4 is lowered and the hardness of the peripheral portion 5 is increased as the final product. In (5), it is necessary to increase the compression ratio of the three-dimensional filament, so for this purpose, as illustrated in FIG. 3, at least the central portion having a good compression ratio is made thin to form the concave portion 6, The peripheral edge where the compression ratio needs to be increased must be thickened.

However, since the three-dimensional filament short fiber aggregates are in a fluorinated state in the plane, when pressed into a rigid body, they are compressed to change their density. It is extremely difficult to form automatically by.

In addition, the three-dimensional filament filament aggregate molded into a shape having a concave-convex structure is glued and dried after needling, but in this case, the filament short filament aggregate has a low thickness so that, for example, if it is pulled upward and dried, There is a flaw that is cut off.

An object of the present invention is to provide an apparatus for producing such a preform of the cushion material.

Another object of the present invention is to provide a preforming apparatus for asymmetrically complex shaped cushioning materials, such as automobile seating cushioning materials, and cushioning materials having different hardnesses.

The filament monofilament having such a three-dimensional curl is supplied to a conveying device, and the needles are brought into contact with the filament short fiber assembly by rotating a rotating body in which a plurality of needles are placed while moving the conveying device. Preforming apparatus consisting of a conveying apparatus of the filament short fiber aggregate which allows to form a predetermined shape by scraping at least a part thereof, and a scrap apparatus installed on the front surface of the conveying apparatus and including a rotating body in which a plurality of needles are placed. Is achieved.

It will now be described in detail the pre-molding apparatus of the cushion member according to the present invention with the accompanying drawings.

As shown in Figs. 6-7, the preforming apparatus 10 mainly consists of the filament short fiber conveying apparatus 12 and the scraping apparatus 13.

The conveying device 12 is, for example, a circulating belt installed between the chains 16 installed between the sprockets 14 and 15, and one of the electric sprockets (for example, the sprocket 14) is a pulley 17 or 63 is linked to pulley 20 of transmission 19 via belt (or chain) 18. The other pulley 21 of the transmission 19 is configured to interlock with the motor 23 via a belt (or chain) 22.

The scrap device 13 is provided on the conveying device 12.

For example, as illustrated in FIG. 7, the rotating body holding member 26 is provided on the horizontal frame 24 of the conveying apparatus 12. In the rotating body holding member 26, the rotating body 33 is fixed to the shaft support 31 by a shaft 32, which is connected to a power source (for example, a motor, a transmission, etc.) 36 through a belt 35 fitted to the pulley 34 fixed thereto. It is. A plurality of needles described later are placed on the outer surface of the rotating body 33.

It is desired that the mounting position of the shaft support 31 be configured to be arbitrarily adjusted in the rotary body support 26 according to the predetermined height (amount of scraping) of the filament assembly, the diameter of the rotating body 33, and the like.

At the rear of the rotor 33, a suction duct 42 communicating with a suction device (docyanine) is provided.

There are many kinds of needles placed on the outer surface of the rotating body 33, but examples thereof include needles, bogies, and euffins that pierce by a cloth, a metallic, etc. There is this. As illustrated in FIGS. 8-9, the needles are made of a metal needle 44 having a diameter of about 0.2-2 mm, preferably 0.2-1 mm, to a base 43 on which the cotton cloth, abrasion, rubber sheet, leather, etc. are properly laminated. In addition to the straight line illustrated in FIG. 8, there are “<” shaped figures and other various shapes illustrated in FIG. The length of the needle 44 is usually 1-30 mm, preferably 2-15 mm, on the surface of the base 43, and the planting density of the needle is 25-600 pieces / in ² , preferably 36-400 / in ² . The angle of the needle 44 with respect to the circumferential circumference of the rotor when the needle is attached to the rotor 33 depends on the length of the needle and the planting density, but in the direction of rotation reverse, it is usually 45-100 ° C., preferably 70 -90 °.

Metallic is formed by closely attaching a gear-shaped metal band 45 of a gear interval of about 5-20 mm, preferably 7-15 mm, as shown in FIG. 10 in the circumferential direction to the surface of the rotor 33. The height is 1-5mm and the tooth spacing is 5-20 pieces / in.

Also, as shown in FIG. 11, a plurality of needles 48 are projected on the substrate 47 (the height of the needles is about 5 mm and the interval is 1-10 pieces / in), but as shown in FIG. 12, the fiber reinforced rubber substrate It is possible to use a number of gears 66 to 65.

As shown in FIG. 13, the lateral punch is formed by gearing a strip-shaped substrate 67 in season to form a gear 68, and is used by winding the surface of the electric rotating body 33 closely in the circumferential direction.

The shape of the rotating body 33 needs a length as long as it can scratch the whole surface of the three-dimensional filament aggregate supplied to a conveying apparatus in the height of the cylindrical needle of the same diameter throughout.

The diameter is appropriately selected depending on the shape, length, needle density, rotation speed of the rotating body, curl shape of the three-dimensional filament, and the like.

The filament short fiber supply device 11 is composed of a filament supply conveyor 59, a sponge machine 58, and the like, as illustrated in FIG. 6, for example, and the sponge machine 58 is located close to the conveying device 12 of the preforming device 10. It is installed. 61 in the sign indicates an exit.

14-15 illustrate another embodiment of the present invention, and are mainly configured as follows.

That is, the preforming apparatus 10 and the filament short fiber supply apparatus 11 installed as needed. The preforming apparatus 10 mainly consists of the filament short fiber conveying apparatus 12 and the scrap apparatus 13 as illustrated in FIG. The conveying apparatus 12 has a shape corresponding to one side of the molded body to be preformed, for example, on the circulation belt provided between the chains 16 installed between the sprockets 14 and 15 (for example, to preform the molded body illustrated in FIG. 1). In this case, one of the electric sprockets (for example, the sprocket 14) is connected to the pulley 20 of the transmission 19 via the belt (or chain) 18 by the pulley 17. By

The other pulley 21 of the transmission 19 is configured to interlock with the motor 23 via a belt (or chain) 22.

The crab device 13 is installed on the 12th place of the electric conveying device. For example, as illustrated in FIG. 15, a rotary body support 26 is inserted inside the vertical frame 25 protruding on the horizontal frame 24 of the transport apparatus 12.

The upper ends of the rotating body retainer 26 are connected to one end of the wire 27, which is suspended from the pulley 28 fixed to the upper end of the electric vertical frame 25, and the end thereof is connected to the weight 29. By this, the electric rotor body 26 is always supported upward.

Moreover, the rotor 30 is provided in the shaft part of the rotating body holding tool 26 as needed, and it becomes easy to move up and down smoothly inside the vertical frame 25 by this. In the rotary body support 26, the rotary body 33 is fixed to the shaft 32 which is rotatably supported by the shaft support 31, and the shaft 32 is driven by a pulley 34 and a belt 35 interposed therebetween. Transmission).

And the needle-like object is installed in the outer surface of the rotating body 33 similarly to the apparatus of FIG. 6-7.

The vertical frame 25 is provided with a pulley 62 fixed to the shaft axis 38 installed on the intermediate support 37, which is in contact with the rotor 41 arranged on the cam plate 39 and the upper stay 40 of the rotor support 26. Regulates At the rear of the rotor 33, a suction duct 42 communicating with a suction device (not shown) is provided.

The shape of the rotating body 33 is arbitrarily selected according to the concave shape of the molded object to be scratched, and there are cylindrical shape, cylindrical shape, abacus egg shape, egg shape, and gourd foil shape.

Even when a rotating body of any shape is used, the length and density of the needles do not necessarily need to be uniform, but may be partially changed. In addition, there is not necessarily one rotating body 33, and it can use in multiple numbers according to a desired shape.

In the case where the scratched recessed concave structure has a long opening shape, the rotary body support 26 does not need to be operated up and down using the cam plate 39, but may be fixed. The filament short fiber supply device 11 includes a filament supply port 49 having an opening in a substantially vertical direction, and the opening area of the supply port 49 is the same throughout.

The lower part of this supply port 49 is provided with the circulation conveyor 50, 51 and the guide plate (docyanine) which paralleled. The upper part of the circulation conveyor 50, 51 forms the inclination part 52, and the lower part is mutually parallel, and forms the compression part 53. As shown in FIG.

The upper opening of the electrical inclined portion 52 communicates with the lower opening of the electrical supply port 49.

This circulating conveyor rubber belt is good, but may be a caterpillar. Further, a plurality of ropes may be provided in close succession. Since the upper end of the compression section 53 communicates with the lower end of the supply port 49, the upper part is usually formed vertically, but the lower part may be formed horizontally.

The circulating conveyors 50, 51 are linked downwards by sprockets 54, 55, 56 and 57 connected to a power source (docyan).

Thus, the area S ₂ of the opening part through which the filament short fiber aggregate F passes in this compression part 53, in particular, the end opening part between the opening part or the circulating conveyor 50, 51 which is provided next to the opening part at the shortest part, in the opening area there is a need to be less than S _1. The upper part of the said supply port 49 is provided with the sponges 58, conveyor 59, etc. connected.

As filament supply means, a wave may be formed by using a cardiac (doxy), and then laminated. The height of the filament supplied to the supply port 49 can be automatically controlled by a level control device (not shown) equipped with detectors 60a, 60b, 60c such as a phototube and a light emitting diode transistor.

The filament compression molding apparatus is not limited to the above, but may supply a predetermined thick filament on a horizontally disposed circulation belt.

As mentioned earlier, the filament short fibers are compressed through the feeder 11, and the filament short fiber aggregates F are transported on the circulating belt of the conveying device 12, and the necessary portions are scratched by needles on the surface of the rotating body 33 of the scrap device 13 It is preformed into a predetermined shape. On the other hand, the scraped-out filament part is suctioned off by the suction duct 42. Thus, after preforming according to the preforming apparatus of the present invention, the adhesive material and heat-drying treatment, the cushion material has a good surface shape, uniform molding structure of the filament short fiber assembly difficult to obtain by conventional mechanical methods such as pressing using a rigid body And a concave structure can be easily and continuously formed and a predetermined shape can be maintained.

Claims (1)

It consists of a scrap device 13 including a conveying device 12 for feeding the compressed filament short fiber aggregates F supplied by the supply device 11 and a rotating body 33 installed on the upper surface of the conveying device and formed by inserting a plurality of needles, Cushion material preforming device.

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