JPS6119855A - tufting method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a handle rotation device for a scroll type high-low tufting machine.

(Prior art) In tufting for high-low patterns, the amount of raw yarn consumed is larger for high pile than for low pile, but there is usually a difference in the ratio of the high and low portions of each needle, and this difference The larger the difference, the larger the difference in yarn consumption between each yarn feeding creel, and the larger the creel remaining yarn amount.

Normally, in the high-low tufting process, when some of the corn in the creel disappears as the tufting progresses, relatively large corn or cheese, etc., is divided into several pieces or prepared in advance. Efforts are being made to use the raw yarn effectively by repeating the process of splicing the cone to a creel with a large amount of consumption, that is, a creel with a small cone.

However, the labor and time required for this work are considerable, and the amount of work involved in dividing and reconnecting the cones and the like increases as the difference in yarn consumption between each yarn feeding creel increases.

(Problems to be Solved by the Invention) The purpose of the present invention is to shift the handles to an optimum number of gauges, to make the yarn consumption of each creel as uniform as possible, to reduce the difference, and to prevent the division and splicing of cones, etc. It is an object of the present invention to provide a device that reduces replacement work and reduces loss of yarn.

(Means for Solving the Problems) The present invention is a tufting machine in which a pattern shift switch is installed in the process of transmitting a pattern signal from a pattern forming device to a transmission device of a yarn feed roll.

(Operation) The structure of the present invention will be explained below according to the embodiments shown in the drawings.

FIGS. 1 and 2 are schematic diagrams showing an example of a pattern rotation device of the present invention.

The pattern rotation device uses a pattern monitor to grasp the condition of the pattern, and based on this, shifts the pattern using a pattern shift switch. First, the pattern monitoring device, as shown in FIG. 2, consists of a pattern setting device, a data sampling device, and a data display device.

A pattern film 2 for a tufting machine is mounted on a pattern drum 1, and a drive device 5 such as a motor is used to rotate it. A pattern is drawn with black paint on a pattern film 2 made of transparent resin, and light from a light R3 such as a fluorescent lamp is received by photocells 4 (usually 120 pieces) to catch the pattern. When the pattern film 2 is coated with black paint, the light from the light source 3 does not reach the photocell 4. Furthermore, when no black paint is applied, the light from the light source 3 reaches the photocell 4. This photocell 4
The data received by the sensor is converted into electrical signals and compiled using a monitor device.

The above data is the ratio of the light-receiving section to the non-light-receiving section for each photocell when the handle tram rotates once. For example, the pattern monitor device is pattern drum 1.
Light reception and non-light reception status data are sampled for 120 photocells at a frequency of about 1000 times per rotation, and sampling is completed when the handle tram l has made exactly one rotation. Light receiving state power: non-light receiving state power; low: high.

For example, for each photocell, the handle drum rotates once per rotation.
000 times of sampling, of which the light receiving state was 30.
If the number of tufts is 0 and the non-light receiving state is 700 times, the proportion of low tufts among all tufts is 30%, and the proportion of high tufts is 70%. (Hereinafter, this ratio will be referred to as a low pile rate and a high pile rate.) The frequency of sampling of this photocell is preferably at least 800 times or more per rotation of the handle drum. However, this may be smaller if there are fewer changes in the pattern of the product.

The above sampling frequency can be achieved by keeping the rotational speed of the handle tram constant and performing sampling a constant number of times per unit time.

Then, the high pile rate or low pile rate of each photocell is outputted as 120 pieces of data on a display screen, printer, digital display, or the like.

Next, explaining the pattern shift switch relationship with reference to FIG. 1, the pattern drum 31, pattern film 32, photocell 34, etc. may have the same structure as the pattern monitoring device, and may also be used for the pattern monitoring device. It is possible. Photocell 34
The signal is transmitted to the electromagnetic clutch 11, but a handle and shift switch 9 are inserted in the middle, and each photocell 34
This signal is transmitted to the electromagnetic clutches 11 whose numbers are shifted by a certain number, producing the same effect as shifting the film. (Hereinafter, this will be referred to as a handle shift.) Since the clutch Nα and the needle protrusion correspond to each other in 120 repeats, the handle is tufted with a shift of the above-mentioned constant number.

Figures 6 and 6 schematically show the pattern shift, and Figure 5 shows the pattern when the pattern is not shifted, and Figure 6 shows the photocell Nα and the clutch N11 (i.e., the needle Nα) after the pattern has shifted. Indicates the corresponding relationship.

In this example, the number to be shifted is 10. 10
When you shift, the handle shifts by 10 gauge. FIG. 3 shows the relationship between the pattern film, photocell Na, clutch Na, needle Nα, and tufted pattern when the pattern is not shifted, and FIG. 4 shows the relationship between the pattern film, photocell Na, clutch Na, needle Nα, and tufted pattern when the pattern is shifted.

Since the handle shift is performed endlessly as shown in Fig. 5 and Fig. 6, the clutch Nα]~lO in Fig. 4 is shown in Fig. 4.
corresponds to photocells Nα111-120. The number of shifts of the handle shift switch can be set arbitrarily from 0 to 19.

This handle shift switch 9 may be of a terminal type, or may use another mercury relay type, a built-in microcomputer, or the like.

Next, the optimum shift number (the shift number for making the yarn consumption of each cone most uniform) will be explained.

The optimal number of shifts is calculated based on data from the pattern monitor device.

To make it easier to understand, a normal tufting machine has 120 photocells, but we will use 20 photocells to shift the pattern once within 60m, and the shift position will be 1/1 of the total tuft length.
This will be explained as a point of 2 (30 m).

The data of 20 photocells from the pattern monitor device is as follows.

Here, In: Needle high pile rate 1m before shifting
: High pile rate of needle after shift IX : Average high pile rate of needle before and after shift MAX : Maximum value of high pile rate (,1) Needle when not shifted Nu In MAXlnNα 1
80 0 7 62 1B 14 52 2B (2) When shifted (When shifted by 4 gauges) Needle N [l (In+ 1m) /2 = lx
MAX-1xNnl (80+52)/2=66
102 (80+55)/2=67.5 8
．． 5a (7B+62)/2=69 74 ge3+69) /2=71 5 5 (52+77)/2=64.5 11.5
6 (55+80)/2=67.5 8.5
7 (62+76)/2=69,+'
7B (69+61)/2=65 11
9 (77+64)/2=65.5 1 0.5
10 (80+52)/2=66 101
1 (76+64)/2=70
612 (el+65)/2=63 l
a13 (54+68)/2=61
1514 (52+72)/2=62 14
1 5 (84+88)/2=66 1'
016 (65+65)/2=65
1117 (6B+80)/2=74
'21 B (72+aO)/2=7.6
.

1 9 (6B+76)/2=72
420 (65+73)/2=69
7 In this way, the sum of the differences from the maximum value of each high bail ratio (=M: this is considered to be a value proportional to the amount of yarn remaining) was 251 before the shift, but after one 4-gauge shift. This decreased to 171. By repeating such operations several times, the value of M can be reduced considerably.

Actually, 1 gauge to 11 for 120 photocells.
Calculate up to 9 gauges, find the number of shifts that minimizes M, and shift the handle by this number of shifts (that is, the optimum number of shifts) using the handle shift switch. Also, the number of pattern shifts is 2.
It is also possible to do this more than once. However, for one pattern shift, 120 combinations are sufficient, but if this becomes, for example, 5 times, 120 to the 5th power = 24.8 billion calculations are required, so the shift amount 5(1) to 5(5 ), create many pairs of M
An approximation method that omits the sheaths of 5(1) to 5(5) for which the value of is the minimum is also effective.

Further, it is convenient to use a personal computer or the like to calculate the optimum number of shifts.

Also, since pattern shifting causes the pattern of the carpet to shift, it is better to perform pattern shifting at the location where the carpet is to be cut.

(Example) Pile yarn count 115.5. Total number 1.52
0 pieces, high bail 8, 5 ++wn, low bail 4.0-9 gauge 1/10 pieces/inch.

Stitch 45/10 (to) Saiiriiri-14165
j'9〈Example〉 Times with shift Tuft length Number of shifts 0120m O gauge 1 120m 114 gauge 2 120m 2B gauge 3 120m 119 gauge 4 120m B gauge (omitted) 16 190m 20 gauge total 2,110m M=765. 2 Remaining yarn jl 193.5 kg <Comparative example> Total without shift 1,853 m M = 3.483.4 Remaining yarn amount 675.3 kg (Effect) As described above, the present invention has a significantly lower amount of remaining yarn than the conventional method It can be said that the significance of this invention is extremely great, since it is possible to reduce the amount of carbon dioxide and greatly contributes to saving raw materials and labor.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram of the tufting machine equipped with a pattern shift switch, Figure 2 is a schematic diagram of the pattern monitoring device, Figure 3 is when the pattern is not shifted, and Figure 4 is the pattern film and photo when the pattern is shifted. The relationship between cell, clutch and tufted carpet patterns is shown. FIG. 5 shows the relationship between the photocell number and the clutch number when the pattern is not shifted, and FIG. 6 shows the relationship between the photocell number and the clutch number when the pattern is shifted. 6--Data sampling device 7--Data display device 8-11Food array 10-m-Yarn foot roll 12--1Tufting machine 13-m-Tube 14-m-Cone 15-m-Creel 16- --Photocell N0 17---Clutch N. 18-1121 dollars N. 19-m-Carpet 20-m-Patterning device 33--One light source 35-m=Drive device 36--Photo array patent applicant Suminoe Textile Co., Ltd.

Claims (1)

[Claims] A tufting machine equipped with a pattern shift switch in the process of transmitting pattern signals from the patterning device to the yarn feed roll transmission device.