JPH024148Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] The present invention creates a simple patternless pattern on the pile surface by adding height differences to the pile length in place of the amount of pile yarn supplied to the needle of the tufted machine. This relates to a patterning device used for forming the pattern.

[Prior art] As a method of changing the amount of pile yarn supplied to the needle in order to form a simple pattern on the pile surface, as described in Japanese Patent Publication No. 53-44653, the pile yarn is fed from a pile yarn feed roll rotating at a constant speed to the needle. A method of varying the running distance of the thread has been put into practice.

In addition, as a method for forming a complicated pattern on the pile surface, the rotation speed is changed according to an instruction signal from an original image reading device, as described in U.S. Patent No. 2,862,465, Japanese Patent Publication No. 45-19144, Japanese Patent Publication No. 60-59340, etc. A method has been put into practice in which the feed rate of each pile yarn is individually varied using a large number of feed rolls.

Furthermore, according to Japanese Patent Publication No. 44-3395, a pile yarn is run on two feed rolls having different rotational speeds, and the pile yarn is selectively pressed against one of the feed rolls by a rotatable roll to supply the pile yarn. Methods have been proposed to vary the amount.

[Problem that the invention attempts to solve]

In the method described in Japanese Patent Publication No. 53-44653, a cam is attached to a guide roll in the running path of the pile yarn, and the amount of pile yarn supplied is changed by changing the height of the cam. It takes a long time to change the cam and the pile yarn cannot be easily and quickly changed.Also, since the cam and the pile yarn are in surface contact rather than point contact, changes in the height of the cam are directly transferred to the needle. This does not appear as a change in the pile yarn supply amount, and as a result, a pattern with a clear difference in pile height is not formed.

In addition, the methods described in U.S. Pat. Since the equipment is large and the running path of the pile yarn from the feed roll to the needle is long, the amount of pile yarn supplied at the feed roll changes due to changes in the expansion and contraction of the pile yarn that occur within the running path. It is difficult to accurately transmit the image to the needle, and as a result, a pattern with sharp differences in pile height cannot be formed, and there are disadvantages such as the need to rewrite the original image or to replace it with a reading device.

Furthermore, in the method described in Japanese Patent Publication No. 44-3395, the pile yarn only makes point contact with the feed roll, so it is easy to slip and the amount of pile yarn supplied varies, and the difference in height of the pile is smaller than in the above two methods. It is not expected to have a pattern with perfectly even ridges and ridges.

[Purpose of invention]

Therefore, the present invention has a practical design that allows the switching of patterns to be performed easily and quickly, the structure of the device is simple and easy to handle, and it is possible to form a simple plain pattern in which the unevenness caused by the difference in height of the pile is neatly aligned. This is an attempt to produce a high/low pile patterning device at low cost.

[Structure of the idea]

That is, the tufted high-low pile patterning device according to the present invention includes: (1) A high-speed rotating roll 11 and a low-speed rotating roll 12 arranged in parallel, and a space between the rotating rolls 11 and 1.
A large number of swinging rods 13 that swing at 2, and a pile yarn feeding rotary body 1 that is pivotally supported by each of the swinging rods 13 and rotates in rolling contact with the rotating rolls 11 and 12.
4, and yarn guides 17 and 18 that guide the pile yarn 16 to the peripheral edge 15 of the rotating body 14.
, a swinging means 19 attached to each swinging rod 13, and an instruction inputting means 20 provided to each swinging means 19 for instructing the operation of the swinging means 19; (2) Each of those instruction input means 20
a selection input device 21 that selects whether or not to operate 9; a detection device 22 that electrically detects an instruction from the selection input device 21; and a detection device 22 that drives the swinging means 19 in accordance with the instruction from the detection device 22. (3) These detection devices 22 are characterized in that they are equipped with a changeover switch 24 that changes the direction of the instruction from the selection input device 21 into forward and reverse directions.

The swinging means 19 is composed of an air cylinder, an oil cylinder, a piano wire, a link, etc.
The drive device 23 for this is a solenoid valve for air or oil circuit pressurized by a compressor or the like, or
It consists of an electric device such as an electromagnet connected to a power transmission node such as a piano wire or link.

The selection input device 21 is composed of a cam, a dobby, etc., and the detection device 22 is a switch such as a switch with a protruding lever 25 that can electrically convert and detect the irregularities of the cam, dobby, etc. of the selection input device 21. .

Hereinafter, the present invention will be explained in detail with reference to the drawings. First, Fig. 1 is a conceptual diagram of a tufted high-low pile patterning device according to the present invention, in which the piston lever 26 is used as the swinging means 19. Swinging rod 13
An air cylinder connected to the lower end of the compressor and whose main body is fixed to the frame of the tufted machine is employed, and the drive device 23 employs a solenoid valve provided in the air circuit leading from the compressor.
In the figure, 27 and 28 are pipes that connect the solenoid valve 23 and the air cylinder 19 to form an air circuit.

The solenoid valve 21 is connected to an AC power source 29,
A three-point snap switch is used as the changeover switch 24, and a lever 25 is used as the detection device 22.
A contact type snap switch that can be switched to a contact point and a B contact point is connected to a solenoid valve 21 and an AC power source 29, respectively.
are connected in series between.

A peripheral cam is employed as the selection input device 21. Each cam 21 consists of two ring-shaped cam members 42 and 43, with one cam member 4
A short cylindrical tongue piece 45 protrudes from the side surface of the second cam member along the ring inner edge 44, and the ring inner edge 46 of the other cam member 43 is adapted to rotatably fit into the cylindrical tongue piece 45. Those cam members 42 and 4
3 are fitted and integrated, and the length of the combined cam ridge 47 can be adjusted by turning one. 48 is a screw hole for screwing into the cam member 42, and 49 is a screw hole for screwing into the shaft 50.

Next, to explain the structure of the pile yarn supply section, the rotating body 14 has a disk having a guide groove on the peripheral edge 15 into which the pile yarn 16 enters, and the piston rod 26 of the air cylinder 19 is connected to the support shaft 30 as a boundary. It is pivotally supported by the upper end of the swinging rod 13 on the opposite side, and the pile yarn 16 enters the guide groove and is rubbed against the circumferential surface of the rotating rolls 11, 12 when the rotating body 14 makes rolling contact with the rotating rolls 11, 12. It seems like there is no such thing.

The rotating body 14 is mounted on both groove walls of the guide groove of the rotating body 14.
The groove is tapered so that the width increases toward the outer periphery. On the other hand, rings made of polyurethane rubber to prevent slips are attached to the circumferential surfaces of the rotating rolls 11 and 12 that are in rolling contact with the rotating body 14 so as to fit tightly into the guide grooves of the rotating body 14 in the form of a V-belt. .

Furthermore, claws are protruded from the side surface of the rotating body 14 in the rotational direction along the periphery, and when the pile yarn 16 is hooked and the rotating body 14 is rotated, the pile yarn is guided into the guide groove by the claws. It is easier to wrap around the periphery.

Yarn guides 17 and 18 at entrances and exits for guiding the pile yarn 16 to the rotating body 14 are provided adjacent to each other in very close proximity to the rotating body 14. of 2/
It is designed to fit tightly over a length of 3 or more and prevent slipping.

FIG. 2 shows an electric circuit formed by the solenoid valve 23 and the snap switches 22 and 24 in FIG. are exchanged, thereby opening and closing the solenoid valve 23, but the opening/closing operation is reversed depending on whether the three-point snap switch 24 is connected to contact a' or contact b'. contact
When it is not connected to a' and b' (off), the opening/closing operation of the solenoid valve 23 stops and the air cylinder 19
is always kept open or closed.

In this specific example, if the air cylinder 19 is always kept open or closed,
The rotating body 14 is in rough contact with the high speed rotating roll 11, so that the amount of pile yarn supplied is always large and a high pile is continuously formed.

A large number of swinging rods 13 are supported by a single support shaft 30 parallel to the rotating rolls 11 and 12, and therefore, their disc-shaped rotating bodies 14 are arranged in an orderly manner similar to a stitch row. The pile yarns 16 that have passed through the rotating body 14 are arranged in the order of arrangement of the rotating body 14, pass through the fixed yarn guides 31, 32, 33, and 34, and are guided to the needle 37 through the lifting yarn guide 36 of the needle 35, The base fabric 38 is tufted. In the figure, 39 is a looper, and 4
0 is a tufted pile.

Each solenoid valve 2 acting on each swinging rod 14
3. Snap switches 22, 24 and cam 21
The swing rods 14 are also arranged horizontally in a line in the order in which they are arranged, and therefore it is difficult to determine whether the operating rod 41 of the three-point snap switch 24 is leaning forward, backward, or standing vertically. Depending on which cam 21 input instruction is sent to the snap switch 24
It is made clear at a glance whether the input instruction is being reversed, or whether the input instruction is being cut and a high pile is continuously formed, depending on the degree to which the operating rod 42 is tilted.

[Effect of idea]

According to the present invention, the rotary body 41 that changes the pile yarn supply amount is a thin disc-shaped body, and the rotary roll 1
1 or 12, by rolling friction transmission from those rolls, and
Since the rotating bodies 41 rotate while changing the speed alternatively depending on which roll is being pressed, the rotating bodies 41 can be arranged in a compact manner close to each other to the same extent as the stitch rows of the pile. The tufted high/low pile patterning device according to the present invention is small and inexpensively made, and can be installed in a narrow tufted tufting machine for mats.The pile yarn setting path from the rotating body 14 to the needle 37 is also short, so There is little expansion and contraction of the pile yarn within the running path, and a pattern with a sharp difference in pile height is formed.

In addition, since the changeover switch 24 can quickly reverse and switch the amount of pile yarn fed through each rotating body 14, the rotational speed instructed by the cam of the rotating body of any of the swinging rods can be changed quickly. The design can be switched by reversing it or by selecting or combining the rotary bodies 41 to be reversed, and since the switching is done by the operation sticks 41, it can be done quickly, and those operation sticks 41 The pattern after switching can be easily confirmed by the degree of inclination.

To illustrate and explain a specific example of the effect of changing the symbol by this changeover switch 24, for example, 6
(a) Each of the stitch rows 51, 52, 53, 5
The selection input device 21 is configured to alternately form high piles (indicated by ■ marks) and low piles (indicated by □ marks) for each stitch at 4, 55, and 56.
(cam) is set and the high and low pile forms a horizontal striped pattern on the pile surface (Fig. 6a), (b) by switching the switch 24 of the stitch rows 51, 53, and 55 every other stitch row to forward or reverse. If the instruction on the selection input device 21 is reversed, the high and low piles form a checkered pattern on the pile surface (Fig. 6b) (c) Selective input is performed by switching the changeover switches 24 of the stitch rows 51, 52, 53 forward and reverse. If the instructions of the device 21 are reversed, the high and low piles will form a horizontally elongated checkered pattern in the gauge direction on the pile surface (Fig. 6c). When set to OFF, the high piles in those stitch rows are continuous and the high and low piles form a lattice pattern on the pile surface (Fig. 6d). When set to the OFF state, the high and low piles form a horizontally elongated lattice pattern on the pile surface (Fig. 6e). Select input device 21 by switching forward/reverse switch 24 in column 54.
If the instructions are reversed, the high and low piles will form a diagonal lattice pattern on the pile surface (Fig. 6f), and (g) all stitch rows 51, 52, 53, 54,
If the changeover switches 24 of 55 and 56 are turned off, a plain pile surface with only high piles will be formed (6th
Figure g).

As is clear, according to the present invention, it is possible to extremely easily form various plain-like uneven patterns on the pile surface using the changeover switch 24, and the changeover of the patterns is achieved by tilting the operation stick 41 of the changeover switch 24. This can be easily visually confirmed by checking the condition, the color of the balance of the push button, the recess of the push button, etc., and by combining the switching by the changeover switch 24 with the movement of the mounting position of the cam 21, various changes can be made. A wide variety of tufted products with plain uneven patterns can be available, and the present invention is therefore very practical and convenient.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram of the tufted high-low pile patterning device according to the present invention, FIG. 2 is an electric circuit diagram of the tufted high-low pile patterning device shown in FIG. 1,
Fig. 3 is an exploded perspective view of a main part of the tufted high-low pile patterning device shown in Fig. 1, and Fig. 4 is a partial perspective view of the tufted tufting machine for mats equipped with the tufted high-low pile patterning device shown in Fig. 1. 5 is a perspective view of the installation location of the changeover switch in the tufted machine shown in FIG. 4, and FIG. 6 is a partial plan view of the tufted product formed by the tufted high-low pile patterning device according to the present invention. , FIG. 7 is an exploded perspective view of the cam of the selection input device. 11... High speed rotating roll, 12... Low speed rotating roll, 13... Rocking rod, 14... Rotating body, 15...
...periphery, 16... pile yarn, 17, 18... yarn guide, 19... rocking means, 20... instruction input means, 21... selection acquisition device, 22... detection device, 23... drive device, 24...changeover switch,
25... Lever, 26... Piston rod, 2
7, 28... Pipe, 29... Power supply, 30... Support shaft, 31, 32, 33, 34, 36... Yarn guide, 35... Needle bar, 37... Needle, 38... Base fabric, 39 ...Looper, 40...
Pile, 41... control stick.

Claims (1)

[Claims for Utility Model Registration] High-speed rotating rolls 11 and low-speed rotating rolls 12 arranged in parallel, a large number of swinging rods 13 that swing between these rotating rolls 11 and 12, and each of these swinging rods 13. a pile yarn feeding rotary body 14 which is rotatably supported by and rotates in rolling contact with the rotating rolls 11 and 12; yarn guides 17 and 18 which guide the pile yarn 16 to the peripheral edge 15 of these rotary bodies 14; A rocking means 19 attached to each rocking rod 13, and a rocking means 19 provided to each rocking means 19.
and an instruction input means 20 for instructing the operation of the oscillating means 19;
Selection input device 21 for selecting whether to operate the
, a detection device 22 that electrically detects the instruction from the selection input device 21, and a drive device 23 that drives the swinging means 19 according to the instruction from the detection device 22; A tufted high/low pile patterning device characterized by comprising a changeover switch 24 for forwarding/reversing instructions from an input device 21.