JPH0114706Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a tufting machine for producing double-sided pile fabrics for use in mats, carpets, throws, etc.

More specifically, the present invention relates to a base fabric presser gauge part that is attached to a tufting machine in order to tuft piles on the front and back sides of a base fabric by arranging the stitch rows of the pile parallel to each other.

[Conventional technology]

The tuft machine has a needle bar with a large number of needles planted in a row in the width direction of the machine, and by moving it up and down, the pile yarn carried by each needle is repeatedly stitched onto the base fabric at the same time. A pile is formed in which the stitch rows are aligned in parallel.

Therefore, if needle bars are provided on both the front and back sides of the base fabric and needles are stitched from the front and back sides of the base fabric at the same time, piles will be formed on both the front and back sides of the base fabric. To do this, loopers that cooperate with the needles must also be attached to the tip sides of both the front and back needles. However, it is considered impossible to attach the needle and the looper to the tufting machine in such a manner that they are stacked on top and bottom (front and back) of the conveying surface of the base fabric, respectively, in terms of installation space. That is, it is considered extremely difficult to find a space in the Tuft machine for such an attachment due to the relationship with the unique mechanism of the Tuft machine.

The tufting machine disclosed in Japanese Patent Publication No. 59-36031 was devised in this respect; only the looper was placed on both the upper and lower sides of the conveying surface of the base fabric, and the needle was attached only to either the upper or lower side. The needle is used to hook the pile yarn to both the upper and lower loopers, but in order to prevent the needle bar from hitting the looper on the side where the needle is attached, it is necessary to make the needle longer and use a needle gauge. In order to avoid bending and breaking the needle (buckling), one must either use thin pile threads to coarsen the density and tuft the pile to a very long length.
Otherwise, the tuft speed must be reduced,
Therefore, it is not possible to freely set the tuft specifications of the pile fabric.

[Problem that the invention attempts to solve]

For the above reasons, in order to freely tuft piles on both the front and back sides of the base fabric, first tuft piles on one side of the base fabric, then use the original tufted fabric with the pile as the base fabric to tuft new piles on the other side. The only way to do this is by overtufting.

However, the base fabric to be overtufted is a tufted fabric that has already been tufted into piles, and the areas to be newly tufted are not tufted and are left as exposed margins of the base fabric in stripes. Even if the raw tuft fabric is used, the raw tuft fabric is soft and unbacked, so it is difficult to overtuft straight along the length of the striped margins, and in many cases the striped margins are New pile stitch rows meander to the left and right of the blank space. For this reason, it is necessary to widen the left and right widths of the striped margins and roughly tuft them. Therefore, it has not been possible to overtuft very close to the existing pile stitch rows that are tufted onto the original fabric, thereby obtaining a double-sided pile fabric with dense pile density on the front and back sides.

In particular, in overtufting to obtain a double-sided pile fabric, the surface on which the needles are stitched is the pile surface of the upright tuft material of the existing pile, and a new stitch is made close to the stitch row of the existing pile. If you try to do this, the needle will push down the existing pile, and the backstitch of the new pile will be sewn directly to the base fabric, which will inevitably cause damage to the existing pile surface.

Therefore, the present invention is a double-sided pile tufted fabric in which piles are densely tufted on both the front and back sides by overtufting from the pile surface of the tufted material very close to the stitch rows without damaging the existing pile. The main purpose of the present invention is to efficiently manufacture tufting machines, and to provide a tufting machine that can serve this purpose.

[Structure of the idea]

The gauge part 26 according to the present invention is attached to a tuft machine in order to achieve the above object, and has a width g that is approximately an integral multiple n (including n=1) of the needle gauge p of the tuft machine, and The front and back length h is the width g
It has a required thickness t of about 5 to 15 mm, and continues in the length direction from the distal end side to the base part 41, the needle insertion part 42, and the attachment part 43, and the base part 4
1 and the left and right sides 44a and 4 of the needle insertion part 42
4b, 45a, and 45b are parallel base fabric presser parts each having a generally boat-shaped rectangular parallelepiped shape. The needle insertion portion 42 has a needle gauge p n.
Needle insertion gap 30 through which the needle of the book can penetrate
are drilled (the number of holes referred to here is "n").
is the same as the numerical value "n" which is an integral multiple of the needle gauge that sets the width g), from the tip 29 of the base part 41 to the needle insertion part 42
The bottom surfaces 36 and 37 leading to the rear end 33 are flush with each other, and the needle insertion portion 42 and both left and right side surfaces 44a and 4 are flush with each other.
The total length l of the portions 44 of the base portion 41 which are parallel to the base portion 4b is at least four times the width g, and the attachment portion 43 is configured to be attached to a tuft machine. .

The tuft machines to which the present invention is applied are well-known and commonly used existing tuft machines with needle gauges of 5/32 inch, 5/64 inch, 1/16 inch, 1/10 inch, etc., and the gauge parts according to the present invention are In accordance with the applied needle gauge p, the tuft machine has several widths g, g', g'', whose width g is approximately an integral multiple n (including n=1) of the needle gauge p. The needle 19 of the tufting machine is inserted into the needle insertion gap 30 according to the tuft specifications of the designed double-sided pile tufted fabric.
It is mounted in contact with the upper surface of the conveyance surface of the base fabric 13 so as to move up and down through the base fabric 13.

Here, "approximately an integer multiple" means the length where the width g of the base fabric presser gauge part is an integer multiple n of the needle gauge p by the thickness q between the side surface 45 and the inner surface 34 of the needle insertion gap. It means that it is wider than n×p (g=n×p+q≒n×p), and the width g is strictly an integral multiple of the needle gauge p (g=n
×p) is not necessary.

Practically, the base portion 41 and the needle insertion portion 42
The total length l of the parallel parts on both the left and right sides should be at least 4 times the width g, and generally 5 to 10 cm. That is, since l > 4g = 4n x p = 5 to 10 cm, for a tuft machine with a needle gauge p of 5/32 inch, no more than n = 3 to 6 needles will pass through the needle insertion portion 42 and overflow. It is recommended that the needle be configured to be tufted, and more preferably that it be configured to be overtufted with 2 to 4 needles. Also, if the thickness t from the top to the bottom of the base fabric presser gauge part is around 7mm, the pile length will be 15mm.
Can be used to overtuft piles to a certain degree.

A preferred embodiment of the base fabric presser gauge part 26 is as follows:
As shown in FIGS. 3 to 5, the upper surface 47 near the tip 29 and both left and right side surfaces 32a and 32b are respectively inclined downwardly toward the bottom surface.

The tuft material 11 to be overtufted can be used by tufting piles in the area to be overtufted using existing tufting machines with needle gauge p of 5/32 inches, 5/64 inches, 1/16 inches, 1/10 inches, etc. First, on the bottom surface, the base fabric 13 appears in a striped pattern without backstitching, and on the pile surface, grooves 14 without piles are tufted to continue straight over a width e that is less than twice the pile length k. .

This tuft original fabric 11 is placed in a tufting machine so that the pile surface 12 faces upward and a new pile thread 22 is stitched from the pile surface 12.

Fig. 1 shows a concave groove without piles, which is made by a tuft machine in which two needles 19a and 19b are removed at a fixed interval r, and has a width e three times as large as the needle gauge p. The illustration shows a case where overtufting is performed on a tufted original fabric formed with 14, and in this case, a width g corresponding to three times the needle gauge p is shown.
A base fabric presser gauge part 26 having two needle insertion gaps 30a and 30b is mounted on the tufting machine at intervals corresponding to the repeat r of the concave grooves 14 of the tufting material 11.

The base fabric presser gauge part 26 is made in the shape of a flat-bottom boat, with the top surface 47 and bottom surfaces 36, 37 parallel to each other, and the tip 29 protruding like the bow of a ship. The insertion gaps 30 are aligned directly below the needles 19, the front and rear directions are aligned with the conveying direction of the tuft material 11, and the tips 29 are extended to the top of the finger plate 15.
It is attached to the tufting machine via a rod 27 behind the needle vertical movement position. A hole 35 drilled in the attachment portion 43 behind the needle insertion gap 30 is a joining hole to the attachment rod 27.

Reference numeral 17 denotes an original fabric drawing device, which consists of a pair of spike rollers 18 and 18', and continuously rotates during operation of the tufting machine to draw out the tufted fabric 11 straight.

19 is a needle, 20 is a looper, and 21 is a knife, which are adjusted so as to cooperate to form a cut pile 24. Reference numeral 16 indicates fingers, and a gap 28 between the fingers is located directly below the needle insertion gap 34.

When operating the tufting machine while pressing down the base cloth presser gauge part 26 to prevent the raw tuft fabric 11 from floating up when the needle 19 is extracted, the drawing device 17 pulls out the raw tuft fabric 11 straight, and the concave groove 14 is formed straight on the tuft original fabric 11, so the concave groove 14 passes under the base fabric presser gauge part 26.

By the way, the bottom surface 3 of the base fabric presser gauge part 26
6 and 37 are flush with each other, the width g thereof is approximately the same as the width e of the concave groove 14 on the pile surface of the tuft raw fabric, and the bottom surface 36 has a pointed end 29 in the opposite direction to the conveyance direction of the tuft raw fabric 11 The base portion 4
The total length l of the parallel parts on both left and right sides of the needle insertion part 1 and the needle insertion part 42 is more than four times the width g, and the tuft material 11 is elongated as a whole.
As the base fabric presser gauge part 26 moves, the concave groove 1
4, and even if the left and right existing piles 12a, 12b are tilted toward the inside of the concave groove, they will gradually move toward the vertical movement position of the needle 19. As time passes, both left and right sides 44a, 44b, 45a of the base fabric presser gauge part 26,
45b, the tilted pile 12 is pushed out to the outside of the groove 14.

In this state, the needle 19 passes through the needle insertion gap 30 and stitches to the underlying fabric 13 of the tufted fabric 11, so the backstitch can be performed without pushing down the existing piles 12a, 12b on the left and right sides of the groove. A new pile 24 is tufted with the piles 25 aligned parallel to the length direction of the groove 14,
At that time, the backstitch 25 is attached to the existing pile 12.
Thus, the double-sided pile tufted fabric 31 can be obtained without sewing the fabric to the bottom of the concave groove.

[Effect of idea]

The base fabric presser gauge part according to the present invention not only suppresses the vertical floating of the base fabric that occurs when the needle is extracted in a tufting machine, but also suppresses the existing pile of the tuft fabric that is tilted as described above, right and left below the needle. It pushes out the base fabric directly below the needle, and its side surfaces closely contact the existing piles on the left and right sides of the groove, so that the position of the base fabric to be stitched by the needle can be adjusted from the left and right sides of the groove. The needle insertion gap is positioned at a predetermined distance.

Therefore, when using the base fabric presser gauge part of the present invention, a high-quality double-sided pile tufted fabric in which the front and back pile stitch rows are closely aligned in parallel and the front and back piles stand neatly upright can be obtained.

Moreover, a conventional tufting machine is used to carry out the present invention, and no special tufting machine is required for carrying out the invention, so the present invention is extremely practical.

[Brief explanation of drawings]

Figure 1 is a perspective view of the main parts of a tufting machine equipped with the fabric presser gauge parts of the present invention, and Figure 2 is an X in Figure 1.
- A sectional view of the main parts of the tufting machine at the part corresponding to the X location, FIG. 3 is a plan view of the base fabric presser gauge part of the present invention, and FIG. 4 is a sectional view at the Z-Z location in FIG. 3.
FIG. 5 is a side view of the base fabric presser gauge part. 11...Tuft raw fabric, 12...Existing pile,
13...Base fabric, 14...Concave groove, 15...Finger plate, 16...Finger, 17...Drawer device, 18...Spike roller, 19...Needle, 20...Looper, 21...Knife , 22...
...Pile thread, 23...Pile thread loop, 24...
Cut pile, 25...Back stitch, 26...
...Base fabric presser gauge parts, 27... Rod, 28
...Finger gap, 29...Tip (point),
30...Needle insertion gap, 31...Double-sided pile tuft fabric, 32...Point side surface, 33...Rear end of needle insertion gap, 34...Inner surface of needle insertion gap, 35...Joining hole, 36, 37 ... Bottom surface, 41 ... Base part, 42 ... Needle insertion part,
43... Mounting part, 44, 45... Side, 47...
Top surface.

Claims (1)

[Scope of claim for utility model registration] The width g is approximately an integral multiple n (including n = 1) of the needle gauge p of the tuft machine, and the front and rear length h is the width g
It has a required thickness t of about 5 to 15 mm, and continues in the length direction from the distal end side to the base part 41, the needle insertion part 42, and the attachment part 43, and the base part 4
1 and the left and right sides 44a and 4 of the needle insertion part 42
4b, 45a, and 45b are parallel to each other, and are generally formed into a boat-shaped rectangular parallelepiped shape, and the base portion 41 gradually becomes narrower in width as it goes toward the tip side, and the tip portion 29 becomes longer in length. protrudes in the direction, and the needle insertion portion 42 has the n of the needle gauge p.
Needle insertion gap 30 into which a book needle can be inserted
A needle insertion portion 42 is formed from the tip 29 of the base portion 41.
The bottom surfaces 36 and 37 leading to the rear end 33 are flush with each other, and the needle insertion portion 42 and both left and right side surfaces 44a and 4 are flush with each other.
A tuft machine characterized in that the total length l of the parallel base part 41 and the part 44 of the base part 4b is four times the width g, and the mounting part 43 is configured to be attached to the tuft machine. Base fabric presser gauge parts 26.