JPS5931749Y2 - Cut pile looper holding device for tufting machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cut pile looper holding device for a tufting machine.

In tufting, the thread is fed to the needle by a thread feed reroller, the cut pile looper moves to the position of the needle at the same time as the needle penetrates the base fabric, and the thread is pulled to the cut pile looper as the needle passes through the base fabric. Multiply.

Next, a knife cuts the yarn caught on the cut pile looper to form a quadruple and an ile.

Therefore, in a tufting machine, as many cut pile loopers as there are needles are required.

Conventional needle gauges (pitch) are mainstream from 5/32 to 1/8 inch, and those with finer gauges are
It is difficult to process the looper holding device.

Due to recent advances in processing technology, gauges up to 1/10 and 5/64 have been commercialized.

In the looper holding device, a large number of looper insertion grooves are cut into the looper holding rod, and a tap is processed to fix the looper by aligning it with the center of the groove, but a threaded part is provided on the partition wall between the grooves. It is difficult to obtain sufficient force for effective tightening because it is only held in place.

In order to obtain effective tightening force, the partition wall can be made thicker, but
The finer the gauge, the thinner the partition wall will be.

If only this point were to be improved, it could be solved by narrowing the width of the looper insertion groove, but since the looper receives contact pressure from the knife, there is a limit to how much the thickness of the looper can be reduced.

As a means to solve the above problem, it has been proposed that the looper and the looper holding rod are integrated into a casting, but if even one looper is worn or damaged, the others must be replaced as well. The drawback was that it required a huge amount of expense.

Also, a method has been proposed in which looper insertion grooves are provided at the front and rear of the looper holding rod to attach the looper from the front and back, but this has the advantage that the partition wall is twice as thick, but the grooves must be cut in two places, front and rear. Therefore, it takes time and effort to process, and it is difficult to achieve groove pitch accuracy, making it difficult to obtain a good product.In addition, two types of looper shapes are required, which increases costs in all respects.

In view of the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a cut pile looper holding device for a tufting machine that can securely fix the looper by providing a screw hole for fixing the looper in a flat surface without a groove.

The configuration of the present invention will be explained in detail based on the embodiment shown in the drawings. The looper fixing angle A, the looper holder B,
It consists of a looper C and a drive angle D.

The looper fixed angle A is constructed as shown in FIG.

That is, the horizontal surface 1 and the vertical surface 2 are formed in an angle shape, and on both sides of the distal end of the horizontal surface 1, as shown in FIG.
3, and a fitting protrusion 4 with a thinner thickness is provided in the lower part of the tip in the horizontal direction.

Note that the looper fixing angles A', A' on both sides are provided with notches 3', 3' so as to mesh with the protrusions 3, 3.

A large number of position regulating and fixing screw holes 5. ..., 5', ... are provided in a staggered manner.

The looper holder B is constructed as shown in FIGS. 1 and 4.

That is, a fitting protrusion 8 is provided at the tip of the upper surface of the rectangular main body 7, and a key-shaped fitting part 9 into which the fitting protrusion 4 is fitted projects horizontally.

Similarly to the looper fixing angle A, protrusions 10.10 are provided on both sides of the tip so as to engage with adjacent looper holders B', B', as shown in FIG.

A looper insertion groove 11 extends from the tip where the fitting portion 8 is provided to the rear end of the main body 7 and reaches slightly below the center in the height direction. A large number of... will be provided.

Note that the looper holder B located on both sides has a protrusion 10.1.
Projections are provided on both sides of the main body 7 so as to mesh with the main body 7.

Then, each looper holder B, . . . fits the fitting protrusion 4 of the looper fixing angle A, . On the bottom surface, the rear surface of the main body 7 is brought into contact with the front surface of the vertical surface 2, and three connecting screws 12° are inserted from the looper fixing angle A side to connect and fix the two. .

Looper C is constructed as shown in FIGS.

That is, a hooking part 13 is provided at the tip end, and the fixing part 14 is formed in the shape of a wedge at the distal end and at the same height as the looper insertion groove 11 .

This fixing part 14 is provided with a regulating step part 15 whose top end is lowered by a step and a regulating step part 15' cut out at the rear, and a screw hole 5 for regulating the position of the looper fixing angle A.・・・
. . . , 5', . . . fixing screw 16. ......, 16'...
It is designed to prevent forward movement by making contact with the

Therefore, each looper C has one fixing screw 16.1
6'.

Further, a front-rear positioning projection 17 is protruded from the lower end of the fixing portion 14 so as to come into contact with the front surface of the looper holder B.

As shown in FIG. 4, the driving angle D is in contact with the rear surface of the vertical surface 2 of the looper fixing angle A, and is passed through from the vertical surface 2 by a plurality of connecting screws 18. The two are connected by...

Although the driving angle D is omitted in the drawing, it is fixed to the upper surface of the driving arm.

The present invention is constructed as in the above embodiment, and when assembling the looper holder B, the fitting protrusion 4 of the looper fixing angle A is fitted with the fitting part 9 of the looper holder B. to the looper fixing angle A and tighten the connecting screw 1.
2. ...... to combine the two.

A screw 18. connects this joint directly or connects the joint to the driving angle D. . . . After connecting, the looper C is inserted into the looper insertion groove 11 of the looper holder B, and the front and rear positioning protrusions 17. . . . is brought into contact with the front surface of the looper holder B (see Fig. 4).

In the above state, the looper C has the front and rear positioning protrusion 1
7 is in contact with the front surface of the looper holder B to prevent backward movement, and the upper and lower surfaces are in contact with the looper insertion groove 11 and the looper fixing angle A to prevent movement.

Each position regulation fixing screw hole 5. -..., 5'
,..., fixing screw 16. ......, 1
6'.

. . . by screwing them together, engaging the tips with the regulating step portions 15, 15', and tightening them to the upper surface to completely close the looper C.
is fixed.

When disassembling, the operation can be performed in the reverse order, or the assembly of the looper holder B and the looper fixing angle A can be removed from the drive angle D with the looper C still inserted, and the assembly can be disassembled individually.

In the above embodiment, the fitting protrusion 4 is provided on the looper fixing angle A, and the key-shaped fitting portion 9 is provided on the looper holder B.
Although the explanation has been made to provide the following, it is also possible to provide the opposite.

Although it has been explained that the regulating step portions 15, 15' are provided in the looper C, this means that when providing a large number of looper insertion grooves 11, it is necessary to provide the position regulating fixing screw holes 5, 5' in a staggered manner. If the interval between the looper insertion grooves 11 is wide, one piece may be sufficient.

Furthermore, although the looper fixing angle A and the looper holder B have been described as being formed separately, they may be formed as one piece without being separated.

Since the present invention has the structure 9 function as in the above-mentioned embodiment, the looper C is regulated in its front and back position by the regulating step 15 and the front-back positioning protrusion 17, and the fixing screw 16.・
It can be fixed more reliably by...

Also, fixing screw 16. Position regulating fixing screw for screwing together 5. . . . are provided on the horizontal surface 1 where no groove is formed, so that screw processing is easy and sufficient strength can be obtained even if a large screw hole is provided.

Furthermore, a fixing screw 16. If the screws are tightened so as to engage with the regulating step portion 15, the purpose can be fully achieved, and the screw hole will not be damaged.

[Brief explanation of the drawing]

The figures show an embodiment of the cut pile looper holding device for a tufting machine according to the present invention. Its front view, FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3, and FIG. 5 is a cross-sectional view taken along the line ■-v in FIG. In the figure, A is the angle for fixing the looper, B is the looper holder, C is the looper, 1 is the horizontal surface, 2 is the vertical surface, 4 is the fitting protrusion, 5 is the screw hole for position regulation fixing, and 8 is the fitting protrusion. Department,
9 is a fitting part, 11 is a looper insertion groove, 13 is a hook part, 1
4 is a fixing part, 15 is a regulating step part, 16 is a position regulation fixing screw, and 17 is a front-rear positioning protrusion.

Claims (1)

[Scope of utility model registration request] Screw hole for position regulation fixing 5. A looper fixing angle A formed by a horizontal surface 1 and a vertical surface 2 with a large number of .
A fitting protrusion 8 is provided at the upper end, and a large number of looper insertion grooves 11 are provided in the vertical direction. A looper holder B that is fixed to the looper fixing angle A provided with... and a hook part 13 at the tip.
A regulating step 15 is provided one step lower on the upper surface of the fixed portion 14, which is inserted at the same height as the looper insertion groove 11°, which is provided with a front-rear positioning protrusion on the lower surface that abuts the front surface of the looper holder B. 17 protrudingly provided, and a position regulating fixing screw 16 which is screwed into the position regulating fixing screw 5° and engaged with the regulating stepped portion 15. . . . and a fitting protrusion 4 is provided on one of the tip of the horizontal surface 1 and the fitting protrusion 8, and a fitting portion 9 is provided for fitting the fitting protrusion 4 on the other side. A cut pile looper holding device for tufting machines featuring: