KR20210131248A - An insertion device of yarn-like articles for a flat knitting machine - Google Patents

Abstract

(Configuration) In the filament inserting device of the present invention, a carrier that can move along the rail of the flat knitting machine includes a power source, a motor, a pair of rollers driven by the motor and feeding the filamentous body, and a pair of rollers It is further downstream and has a cutting device for cutting filaments.
(Effect) According to the present invention, it is possible to accurately insert a filamentous body of a desired length into a knitted fabric.

Description

AN INSERTION DEVICE OF YARN-LIKE ARTICLES FOR A FLAT KNITTING MACHINE

The present invention relates to a filamentary body made of a thread attached to a flat knitting machine and used and attached with a radio frequency identifier (RFID), a metal thread, a thread having a color marker, and the like. It relates to a device for inserting into a knitted fabric (編成布).

When knitting a knitted fabric with a flat knitting machine, things other than normal knitting yarn may be inserted into the knitted fabric. For example, if a filamentous body with RFID is inserted, it is effective for production management and distribution management of knitted fabrics. In addition to RFID, there are cases where it is desired to insert a thread made as a marker by partially coloring the thread, a metal thread for decoration, or the like. The insertion is in the form of a thread or tape, and since it is inserted with a shorter length than that of a knitting yarn, it is referred to as a filamentous body in this specification.

The related prior art is indicated. Patent Document 1 (US 7,246,508 B1) discloses a collar stay (collar stay) insertion device. The insertion device takes out the color stays in the case one by one and inserts them into the knitted fabric by extruding the color stays. Patent Document 2 (US 2018/0282914 A1) discloses a yarn feeding device provided with a cutter, a gripper, and a pressurized air pipe for sending out knitting yarn. This yarn feeding device cuts the knitting yarn at a desired position, and takes out the knitting yarn by an airflow after cutting.

: US 7,246,508 B1 : US 2018/0282914 A1

The apparatus of patent document 1 is not suitable for inserting a filamentous body. The apparatus of Patent Document 2 is not suitable for accurately inserting filaments of a desired length because the yarn is sent out by the airflow.

An object of the present invention is to provide an insertion device capable of accurately inserting a filamentous body of a desired length into a knitted fabric.

In the apparatus for inserting filamentous bodies for flat knitting machine of the present invention, a power receiving unit, a motor, and at least one of a driving roller driven by a motor, to a carrier movable along the rail of the flat knitting machine, a pair of feeding the filamentous body A roller and a cutting device that is downstream of the pair of rollers and cuts the filamentous body sent from the pair of rollers are provided.

The insertion device of the present invention moves along the rail of the flat knitting machine, drives the driving roller by a motor, and inserts the filamentous body into the knitted fabric. And when the filamentous body of the desired length is inserted, the filamentous body is cut by the cutting device. As a result, it is possible to accurately insert the filamentous body of a desired length at a desired position in the knitted fabric. In the case of using a battery as a power source, a terminal for receiving power from the battery corresponds to the power receiving unit.

Preferably, a lifting means for elevating the motor, a pair of rollers, and the cutting device relative to the carrier is further provided in the carrier. If the motor and the cutting device are raised, interference with other yarn feeders can be prevented. For this reason, it is not necessary to prevent interference by moving the insertion device along the rail of the flat knitting machine.

Preferably, pressing means for pressing at least one of the pair of rollers in the direction of pressing the filamentous body is further provided. In this way, it is possible to prevent the length of the inserted filaments from deviating from the desired length as the filaments slide off the rollers.

Preferably, control means for controlling the motor and the cutting device are further installed. When the motor and the cutting device are remotely controlled by the controller of the flat knitting machine, the burden of communication and the like increases. When the control means in the insertion device receives a command from the controller of the flat knitting machine or the like and controls the motor and the cutting device, the control becomes simple.

Preferably, a sensor for detecting the element of the filamentous body is further installed. Since the control means can know the position of the element in the filamentous body, it is possible to arrange the element of the filamentous body at a desired position in the knitted fabric.

Preferably, a drive belt driven by a motor and driving the drive roller is further provided, and particularly preferably, a pair of drive belts is provided and drives the pair of drive rollers. The drive roller and the motor can be arranged at a distance by the belt drive, so that the power transmission between them can be made compact. In addition, if a pair of drive belts is provided, a pair of drive rollers can be driven together.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front view of an insertion device according to an embodiment.
Fig. 2 is a rear view of the insertion device of the embodiment.
Fig. 3 is a partially enlarged plan view showing an enlarged part of the cutting device in the insertion device of the embodiment.
Fig. 4 is a block diagram showing the control system of the insertion device according to the embodiment.
Fig. 5 is a diagram showing the processing executed by the insertion device of the embodiment.

Below, the most suitable Example for carrying out the invention is shown.

(Example)

1-5, the insertion apparatus 2 of the filamentous body for flat knitting machines of an Example is shown. The insertion device 2 is attached to a flat knitting machine, and the structure of the insertion device 2 is shown in FIGS. 1 and 2 . 4 is a rail for running the carrier of the flat knitting machine, even if equipped with a feed line 5 such as a non-contact feed line, a feeder line for communication with the controller of the flat knitting machine, etc. good. The communication method between the insertion device 2 and the controller of the flat knitting machine is arbitrary.

The main structural members of the inserting device 2 are a carrier part 6 , a fixing plate 9 fixed to the carrier part 6 , and a lifting plate 10 elevating with respect to the fixing plate 9 . The carrier part 6 is provided with a plurality of rollers 7, and moves on the rail 4 by itself or interlocking with a carriage of a flat knitting machine not shown in the drawing to move on the rail 4 Move. In the embodiment, it is assumed that the carrier part 6 is linked to the carriage, and the carrier part 6 is provided with an engaging groove 8 for engaging with an interlocking pin (not shown) of the carriage. .

The fixing plate 9 is fixed to the carrier part 6 and extends downward in the vertical direction. Of course, the fixing plate 9 and the carrier portion 6 may not be a combination of different members, but may be the same member as one unit from the beginning. The sliding part 18 of the lifting plate 10 is guided by the guide groove 19 formed in the fixing plate 9 . Further, for example, the lifting motor 13 provided on the fixed plate 9 and the female screw portion 14 formed on the lifting plate 10 are coupled with the transfer screw 15 . In this way, the lifting plate 10 is raised and lowered while guiding the sliding unit 18 by the rotation of the lifting motor 13 . In addition to the above, for example, a control unit 12 and a power receiving unit 16 for non-contact power feeding are attached to the fixing plate 9 . In addition, a battery may be provided instead of the power receiving unit 16 , and power may be received from the power supply line 5 by a brush or the like.

Reference numeral 20 denotes a filamentous body to be inserted, which is fed from a yarn package not shown in the figure, for example, through a buffer such as side tension. A positive yarn feeding device or the like that can feed filaments of a desired length in both directions in the forward and reverse directions may be provided upstream of the side tension. In the embodiment, the filaments 20 are yarns having RFID 21 (filament elements) attached at a predetermined pitch, and the attachment pitch of the RFID 21 is the same as the desired length when inserted into the knitted fabric. .

The lifting plate 10 is provided with an eyelet 22 for the filamentous body 20, and as shown in FIG. 2, a yarn feed motor 25, a transmission 26, and a pair of pulleys 27, respectively. ), a gear 28 , a belt 29 , and a pulley 30 . Then, the rotation of the yarn feeding motor 25 is reduced by the transmission 26, and the gears 28 and 28 meshed with each other are rotated in the opposite direction by the same angle, and the pulleys 30 and 30 are passed through the belts 29 and 29. rotates in the reverse direction by the same number of revolutions. A pair of drive rollers 34 and 34 are provided coaxially with the pulleys 30 and 30 (FIG. 1), and the filamentous body 20 is sent out by the drive rollers 34 and 34.

The yarn feeding motor 25 is controlled by the control unit 12 . By monitoring the rotation speed of the yarn feeding motor 25 by an encoder not shown in the figure, or by using the yarn feeding motor 25 as a pulse motor, the filamentous body 20 is sent out by a desired length.

At one side of the lower portion of the lifting plate 10 , there is a lower end 32 , and a pulley 30 and a driving roller 34 are attached to the lower end of the lower end 32 . Further, a pressing member 35 is provided on the other side of the lower portion of the lifting plate 10 . The pressing member (35) has an arm (37) supported by a pin (36) in its center, and the upper portion of the arm (37) is pressed by a tension spring (38), and the tension spring (38) The other end of ) is fixed with a pin (39). A pulley 30 and a driving roller 34 are installed at the lower end of the arm 37 , and the filamentous body 20 is sent out from between a pair of driving rollers 34 and 34 . Since the pulley 30 and the driving roller 34 have a common shaft, the driving roller 34 rotates by the rotation of the pulley 30 . Further, by pressing the arm 37, the pair of driving rollers 34 and 34 are brought into contact with an appropriate nip pressure. In addition, the structure of the pressing member 35 is arbitrary.

The cutting device 40 is provided at the lower end of the lifting plate 10, in the lower end of the lower end 32 in the embodiment, at a position downstream from the driving roller 34 in the feeding direction. Reference numeral 41 denotes an eyelet for guiding the filamentous body 20 with the cutting device 40 . The structure of the cutting device 40 is shown in FIG. The filamentous body 20 is passed between the fixed blade 42 and the movable blade 43, and the shaft 44 of the movable blade 43 is rotated by the driving unit 45 made of a small motor or a solenoid to rotate the filamentous body ( 20) is cut. 46 is a support for attaching the cutting device 40 to the lower end (32).

4 shows the control system of the insertion device 2 . The insertion device 2 is operated by a power source such as the power receiving unit 16 and operates according to a command from the controller 50 of the flat knitting machine. The control unit 12 communicates with the controller 50 of the flat knitting machine and raises and lowers the lifting plate 10 by the lifting motor 13 . Moreover, the control part 12 rotates the drive roller 34 by the yarn feed motor 25, and sends the filamentous body 20 of a desired length from the eyelet 22. As shown in FIG. The cutting device 40 is operated by the control unit 12, there is an RFID 21 at a predetermined position from the starting end of the filamentous body 20, and the length of the filamentous body 20 inserted into the knitted fabric is desired. The filamentous body 20 is cut to a length. When the RFID reader (RFID reader) 24 detects the RFID 21 in the filamentous body 20, the ID of the RFID 21 or a tag indicating that the RFID 21 has been detected other than the ID is notified to the control unit 12 do. Even when only the ID is notified, the control unit 12 can know that the RFID 21 has been detected. In addition, when the insertion device (2) is moved along the rail (4), a traveling motor is added.

The operation of the insertion device 2 of the embodiment is shown in FIG. In addition, the insertion device (2),

· While moving the insertion device 2 along the course direction of the knitted fabric, sending out the filamentous body 20 so as not to form a stitch and inserting it into the knitted fabric (this process is referred to as an inlay);

· Without moving the insertion device, sending out the filamentous body 20 in the longitudinal direction along the wale direction of the knitted fabric and inserting it as a warp;

· The filaments are fed to the needles of the flat knitting machine together with other knitting yarns, and processes such as forming stitches are performed.

The purpose of inserting the filamentous body 20 provided with the RFID 21 is production management, distribution management, etc. of the knitted fabric. The RFID 21 is inserted at a predetermined position in the knitted fabric, and the ID of the RFID 21 is read by the RFID reader 24 and stored in an RFID server (not shown). In the RFID server, data on production management and data on distribution and sales of knitted fabrics are stored in association with each ID. Then, when the ID of the RFID 21 is read at the time of shipment, sale, etc. and the RFID server is inquired, data related to production management, distribution and sales are obtained. Instead of the RFID reader 24, an RFID reader/writer may be disposed, and the RFID 21 may store production management data or the like.

In an embodiment, the pitch of the RFID in the filamentous body 20 is equal to the insertion length (desired length) of the filamentous body 20 . Also, if the pitch of the RFID is longer than the desired length, after inserting the previous RFID, the filamentous body 20 is released and cut until the next RFID is detected by the RFID reader, and the unnecessary part is removed by, for example, suction. . The insertion device 2 waits at a position that does not interfere with knitting, such as the end of the needle bed of the flat knitting machine, and unwinds the filamentous body 20 from the yarn package. When the RFID reader 24 detects the RFID 21 , it reports to the control unit 12 . The above processing is called standby processing (P1).

In the embodiment, the controller 50 of the flat knitting machine controls the carriage (not shown) of the flat knitting machine, and moves the inserting device 2 to a desired position by engaging the interlocking pins of the carriage with the engaging groove 8 . make it In synchronization with the movement of the insertion device 2, the filamentous body 20 is released to a desired length by the driving roller 34 and cut by the cutting device 40, and the RFID 21 is placed at a desired position in the knitted fabric. can be inserted. Here, since the filamentous body 20 is sent out by a pair of driving rollers 34 and 34 and pressure is applied between the driving rollers 34 and 34 by the pressing member 35, the filamentous body 20 of the desired length is precisely ) can be inserted. Also, at this time, the filaments 20 may be knitted to form a stitch. These processes are called insertion processes (P2).

For knitting the knitted fabric, another yarn feeding device also runs the rail 4 to feed the knitting yarn. There is a possibility that the lower end of the other yarn feeding device and the lower end of the inserting device 2, in particular the cutting device 40, the yarn feeding motor 25, the driving roller 34, etc. will interfere. Therefore, when the lifting plate 10 is raised by the lifting motor 13, interference with other yarn feeders can be prevented. This process is called evacuation process (P3). Moreover, the mechanism used for raising/lowering is arbitrary, such as a combination of a solenoid and a double speed mechanism.

When the filamentous body 20 is inserted by the inlay, it may be difficult to fix it at a predetermined position because the filamentous body 20 floats in the knitted fabric. In this case, by lowering the elevating plate 10, for example, by pressing the filamentous body 20 inserted into the knitted fabric by the bottom surface of the cutting device 40 downward, the filamentous body 20 floats from the knitted fabric. Press-fitting treatment (P4) to prevent it is performed. Instead of press-fitting by the bottom surface of the cutting device 40, a ventilation pipe or the like not shown in the figure may be provided and press-fitted by airflow.

Modifications of the embodiments will be described. Instead of evacuating by raising the lifting plate 10, the insertion device 2 may be evacuated by moving it to a position in the knitting width direction that does not interfere with other yarn feeding devices. The pressing member 35 can be changed to any member that applies pressure between the driving rollers 34 and 34 . The pressing member 35 is not essential, but if the pressing member 35 is installed, sliding of the filamentous body 20 with respect to the driving roller 34 can be prevented. When the insertion device 2 is moved in a direction close to the yarn feeder such as a side tension or an active yarn feeder, the filamentous body 20 loosens, so it is difficult to absorb the yarn loosened by them. desirable.

Instead of providing the control unit 12, each element of the inserting device 2 may be controlled by communication or the like via the rail 4 by the controller 50 of the flat knitting machine. However, when each element of the insertion device 2 is controlled by the controller 12, the control becomes simpler than controlling by the controller 50 of the flat knitting machine.

In the embodiment, although the filamentous body 20 provided with the RFID 21 is inserted, the type of the filamentous body is arbitrary. The RFID reader 24 can be changed to a different sensor depending on the type of the filamentous body 20, for example, a color sensor that detects a colored part of the filamentous body, a color sensor that detects a thick part formed in a specific place of the filamentous body A thickness sensor or the like may be used.

A pair of belts 29 and 29 was used to rotate the drive rollers 34 and 34 at the same speed by the yarn feed motor 25 at a slightly distant position. However, the type of transmission means between the yarn feeding motor 25 and the driving roller 34 is arbitrary. Moreover, although the sliding of the filamentous body 20 can be decreased by driving the pair of drive rollers 34 and 34 together, you may drive only one roller. Although only one driving roller 34 is pressed in the embodiment, both driving rollers 34 and 34 may be pressed.

2: Insertion device
4: rail
5: feed line
6: carrier part
7: Roller
8: coupling groove
9: fixed plate
10: lifting plate
12: control unit
13: elevating motor
14: female thread part
15: feed screw
16: power receiver
18: sliding part
19: guide home
20: Filament
21: RFID
22 : Eyelet
24: RFID reader
25: feed motor
26: gearbox
27 : pulley
28 : gear
29: belt
30: pulley
32: lower part
34: drive roller
35: pressing member
36 : pin
37: cancer
38: spring
39: pin
40: cutting device
41 : Eyelet
42: fixed blade
43: movable blade
44 : axis
45: drive unit
46: support
50: controller of flat knitting machine

Claims (5)

On a carrier that can move along the rail of a flat knitting machine,
power receiving unit,
motor and
A pair of rollers, at least one of which is a driving roller driven by the motor, and sends out filaments;
A cutting device that is downstream of the pair of rollers and cuts the filamentous body sent out from the pair of rollers;
A filament insertion device for flat knitting machines installed.
According to claim 1,
and lifting means for elevating and lowering the motor, the pair of rollers, and the cutting device relative to the carrier are provided in the carrier.
3. The method of claim 1 or 2,
A filament insertion device for a flat knitting machine, characterized in that a pressing means is provided for pressing at least one of the pair of rollers in a direction for pressing the filaments.
4. The method according to any one of claims 1 to 3,
A filament insertion device for flat knitting machine, characterized in that control means for controlling the motor and the cutting device are installed.
5. The method according to any one of claims 1 to 4,
A filament insertion device for a flat knitting machine, characterized in that a sensor for detecting elements of the filamentous body is provided.

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