JPS5936029B2 - tufted machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides carpets, mats, 7-pile fabrics, more specifically, pile fabrics by simultaneously planting (tufting) a large number of pile naps in a straight line on a base fabric. It relates to a tufted machine for manufacturing.

Conventionally, the pile forming elements of this type of tufting machine, such as needles, loopers, knives, etc., are mounted and carried on one rod, that is, a needle bar, a looper bar, and a knife bar, extending in a straight line in the width direction of the tufting machine. These bars are reciprocated through a crank mechanism (one dollar shaft, looper shaft, knife shaft) on a shaft that is supported in the width direction of the machine and is driven at both ends to swing and rotate. It is not possible to stop or change the displacement of only a specific pile forming element that is in motion.

For this reason, when the so-called weaving width in which piles are planted is narrowed, the vertical direction of the base fabric (usually referred to as pile rows, step rows, etc.) is used.

), the pile forming element in that part must be finally removed from the needle bar, etc., which is very time-consuming, especially when changing the weave width of the tuft. When the pile is a cut pile, it is completely impossible to change the pile length of some stitch rows to be longer or shorter than other stitch rows.

This is because when the pile length is partially changed, the pile length is the same across all stitch rows (i.e., the entire weaving width), so-called 1
/ In the case of a cut pile fabric, the needle 1 is pulled out from the base fabric 2 by a maximum distance g1 and inserted into the base fabric 2 by a maximum distance h1 during one rotation of the original fabric, as shown in Fig. 1a and b. The entire stroke 1=gl-hl is reciprocated, the displacement angle of the opposite rotation is θ, and the distance between the base fabric 2 and the needle tip 1 is l(θ
), the displacement curve X1 of the needle 1 (is drawn as shown in FIG. 2).

By the way, in order to increase the length of the needle 1', the stitch length h2 of the needle 1' must be thicker (h2>hl) as shown in Fig. In order to move the base fabric 2 to the next stitch position when several needles have different stitch lengths, the needles with different stitch lengths must be moved from the base fabric at the same time. To do this, the length g2 of the needle 1' for tufting long piles must be increased (g2>gl), and the displacement curve X2 shown in Figure 2 should be drawn. This means that you have to do it.

In other words, in order to tuft piles with partially different pile lengths, the reciprocating distance (stroke) of needles 1 and 1' must be 12〉1 (g2=g
2+h2), but in a conventional tufted machine in which all the needles are carried by one needle bar driven by the original, it is not possible to change the stroke of the needles individually. It is not possible to change the pile length of some stitch rows.

The present invention focuses on such shortcomings existing in the prior art, and solves the problems without causing other inconveniences such as mechanical vibration that adversely affects tufting and ease of handling of the tufting machine. A rotating thick part and a plurality of followers corresponding to each thick part are arranged in a row across the conveying surface of the base fabric in the width direction of the machine, and these thick parts are connected through separate intermediate joints. The gist is to construct a tufted machine by rotating a main drive shaft supported in the width direction of the machine, causing the corresponding followers to reciprocate individually, and having the followers carry needles, loopers, or knives. That is.

Hereinafter, the present invention will be specifically explained with reference to illustrated embodiments.

11 a, 1 l b, 11 G 711 d
. . . are needle drive devices of a slider crank mechanism that are arranged in the machine width direction and attached to the frame 12.

These driving shafts 13 are connected to a main driving shaft 1 supported in the width direction of the machine.
4, each sprocket N5a.

15b, 15c, 15d--- and Teenbelt 16a.

16b j 16C, 16d --- and sprocket 17a.

17 b , 717 c , 17 d , . . . , and rotates disc-shaped cranks 18 that are respectively pivoted at both ends of their driving shafts, and guides protruding above and below the frame 12 . A sliding rod 21 that is slidably fitted in the connectors 19 and 20 is reciprocated up and down via a connecting rod 23 with a tongue buckle 22 installed therebetween.

A bracket 24 is connected to the sliding sevent 21 with a screw 25, and is a rotating pair with respect to the connecting rod 23.

A yarn guide plate 27 and a needle bar 28 are connected to the lower end of the sliding rod 21 via a locking piece 26.
9 is attached with a push screw 30.

Yarn guide plate 27, 27' and one, needle par 28
28' is separated between adjacent needle drives, so that when the connecting rod of the required drive is removed, the needle bar (needle) it carries stops tufting.

Father, the connecting rod connection surface of the crank 18 is drilled with markings 33, 33', 33'', etc. for several connecting pins 32 at different distances from the shaft center 31.
As a result, the connecting rod of a desired drive device can be connected to a desired sign plate, and the stroke (elevating distance) of the needle to be driven can be made different from the stroke of the needles carried by other drive devices.

34 is a guide 19 parallel to the sliding rod 21;
20, the lower end of which is joined to the needle bar 28 via a locking piece 35, and a washer 36 is screwed between the guides 19 and 20. A coil spring 37 is wound by pressing against the upper guide 20 of 36.

This bushing rod 34 is biased by a coil spring 37 to guide the needle 29 to the base fabric 38, and the coil spring 37 that presses in this way protects the drive device 11 by reducing the impact resistance received from the base fabric when the needle 29 is inserted. At the same time, the rotational torque of the main driving force changes slowly.

In the figure, 39 is a yarn guide plate, 40 is a bearing, 41 is a knife, 42 is a looper, 43 is a looper bar, 44 is a knife bar, 45 is a cut pile, and 50 is a pile yarn.

As is clear from the above examples, the effects of the present invention are produced as follows.

(1) Since the needles arranged in the machine width direction can be divided into several blocks and individually driven or stopped, the tufting width can be changed between any element of the required drive device. The process of chaining or separating the threads simplifies the cumbersome work of changing the attachment and threading of many needles and passing through the threads of a large number of pile threads, making it possible to change the weaving width more efficiently.

(2) Replacing the needle is generally not done because it requires fine adjustment in cooperation with the looper, which is done while checking the needle's inclination, bending, wear condition, etc., and therefore the width decreases. However, according to the present invention, such inconvenience does not occur, and the unnecessary needles and needle bars are tufted while being attached to the needle bar. Since the motor does not run idle, power costs are reduced.

(3) Since the needles of each block are individually driven by the thick part of the individual drive device, the length of the thick part (for example, the distance from the driving shaft to the pin attached to the connecting rod) This can be changed for each block, thereby making it possible to change the pile length for each block to obtain a high-low pile fabric with a wide variety of patterns.

(4) In conventional tufted machines, the driving shaft is supported in the form of a continuous beam across the entire width of the machine, and is oscillated and rotated at both ends, so the load from the driving shaft is concentrated on both ends. Additionally, the needle bar is continuous over the entire width of the machine, which causes large vibrations during tufting, but according to the present invention, the driving shaft and needle bar are short and divided into sections that are a fraction of the width of the machine. Moreover, since the load is distributed over the entire width of the machine, it operates easily and there is no risk of noise pollution, and the operation of the looper and knife is not adversely affected and the occurrence of vibration is eliminated.

(5) In order to support the driving shaft at both ends of the width of the machine and concentrate the load on both ends for swinging, the first drive unit must also be enlarged, thus requiring a large installation area for the machine. However, in the present invention, the drive device is made up of several smaller units, and because it is attached to the machine frame that crosses the conveying surface of the base fabric, the tufting machine can be moved to an extent corresponding to the width of the base fabric to be tufted. This allows the factory space to be used effectively.

(6) Also, since the drive device is divided and made smaller, its component parts are also smaller and lighter, which also reduces power costs. Also, small parts are easier to manufacture, so tufted can be manufactured precisely and economically.

(7) Furthermore, since the needle bar and driving shaft are divided and short, the thermal expansion and contraction strains caused by seasonal temperature changes are dispersed, and seasonal fluctuations do not occur in the tufted machine.

(8) Furthermore, by interposing an intermittent mechanism between the main drive shaft and the drive shaft, the number of stitches (vertical tufting density) of the required block can be reduced by the number of stitches of other blocks. -, it is also possible to draw a pattern pattern on the pile fabric based on the stitch difference.

The above explanation is mainly about driving the needle, but the looper is different in shape from the needle.

The blades and knives also reciprocate and perform tufting in cooperation with the needles. The same effect as in the case of the needle can be obtained by individually driving the needle once with the drive device.

Then, a plurality of rotating thick parts and a plurality of followers corresponding to each thick part are arranged in series in the width direction of the machine and across the conveying surface of the base fabric, and each of these thick parts is As long as it is rotated by a main drive shaft supported in the machine width direction via another intermediate intermediate joint to cause the corresponding followers to reciprocate individually, the drive device that transmits the reciprocating motion is the slider shown in the above embodiment. It is not limited to the crank mechanism, but may be a link mechanism or a cam mechanism, or a combination thereof.The effects of the present invention are not affected by the mechanism of the drive device, and the present invention The technical scope of the invention is not limited.

In particular, when the reciprocating distance of the needle is greatly changed due to a change in pile length, it is necessary to adjust the timing of the looper and knife that cooperate with it, so the present invention is implemented simultaneously for both the needle and the looper knife. The present invention is particularly effective when tufting piles that have a partially long pile length, such as decorative tufts of carpets or mats.

As is clear, the present invention divides the pile-forming elements (bars) and installs a driving device for driving them individually, that is, in the width direction of the machine and across the conveying surface of the base fabric. This has a remarkable effect in that the thick parts are arranged in series and rotated in synchronization with the main driving shaft supported in the width direction of the machine via separate intermediate joints.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the operating state of the needle, Fig. 2 is a displacement diagram showing the operating state of the needle, Fig. 3 is a side view showing the operating state of the needle, and Fig. 4 is a tufted tube according to the present invention. FIG. 5 is a front view of a portion of the tufted machine shown in FIG. 4, and FIG. 6 is a sectional view of a portion of the tufted machine shown in FIG. 4. 11... Pile forming element drive device, 18...
... Crank, 21 ... Sliding rod, 23 ... Connecting rod, 28 ...
...Needle bar. 29... Needle, 38... Base fabric, 4
1. Bent knife, 42... Looper.

Claims (1)

[Claims] 1 A plurality of rotating masters and a plurality of followers corresponding to each master are arranged in a row in the width direction of the machine and across the conveying surface of the base fabric, and each is connected through a separate intermediate joint. Each source is specially rotated by a main drive shaft supported in the width direction of the machine, and the vertical cylinders corresponding to each source are individually synchronized and reciprocated, and their followers carry needles, loopers, or knives. A tufted machine characterized by