KR102554097B1 - An insertion device of yarn-like articles for a flat knitting machine - Google Patents

Abstract

(Configuration) In the filamentous body inserting device of the present invention, a carrier capable of moving along the rail of a flat knitting machine includes a power source, a motor, a pair of rollers driven by the motor and sending out filamentous bodies, and a pair of rollers It is further downstream and has a cutting device for cutting filaments.
(Effect) According to the present invention, a filamentous body having a desired length can be accurately inserted into a knitted fabric.

Description

Filamentous body insertion device for flat knitting machine {AN INSERTION DEVICE OF YARN-LIKE ARTICLES FOR A FLAT KNITTING MACHINE}

The present invention is attached to a weft knitting machine and used, and furthermore, a filamentous body made of a yarn attached with an RFID (radio frequency identifier), a metal yarn, a yarn equipped with a color marker, etc. It relates to a device for inserting into a knitted fabric.

[0002] When knitting a knitted fabric with a flat knitting machine, there are cases where things other than normal knitting yarns are inserted into the knitted fabric. For example, inserting filamentous body with RFID is effective for production management and distribution management of knitted fabric. In addition to RFID, there are cases where it is desired to insert a thread partially colored and used as a marker, a metal thread for decoration, or the like. The insertion is in the form of a thread or tape, and is referred to as a filamentous body in this specification because it is inserted with a shorter length than the knitting yarn.

Relevant prior art is indicated. Patent Document 1 (US 7,246,508 B1) discloses a device for inserting a collar stay (a stay for a collar). The inserting device takes out the color stays from 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 equipped 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 draws out the knitting yarn by air flow after cutting.

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

The device of Patent Literature 1 is not suitable for inserting a filamentous body. The device of Patent Document 2 is not suitable for accurately inserting a filamentous body of a desired length because the yarn is sent out by air flow.

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

In the filamentous body inserting device for a flat knitting machine of the present invention, a carrier capable of moving along the rail of the flat knitting machine includes a power receiving unit, a motor, and a drive roller at least one of which is driven by the motor. A roller and a cutting device downstream of the pair of rollers and cutting the filamentous bodies sent out from the pair of rollers are provided.

The inserting device of the present invention moves along a rail of a flat knitting machine and drives a drive roller by a motor to insert a filamentous body into a knitted fabric. Then, when a filamentous body having a desired length is inserted, the filamentous body is cut by a cutting device. As a result, a filamentous body of a desired length can be accurately inserted into a desired position of the knitted fabric. In the case of using a battery as a power source, a terminal that receives power from the battery corresponds to a power reception unit.

Preferably, the carrier is further provided with lifting means for relatively lifting the motor, the pair of rollers, and the cutting device relative to the carrier. By raising the motor and cutting device, etc., interference with other yarn feeding devices can be prevented. For this reason, there is no need to prevent interference by moving the inserting 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 filamentous body from deviating from the desired length due to slipping of the filamentous body from the roller.

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

Preferably, a sensor for detecting filamentous elements is further provided. Since the control means can know the position of the element in the filamentous body, it is possible to place the element of the filamentary body in a desired position in the knitted fabric.

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

Fig. 1 is a front view of the inserting device of the embodiment.
Fig. 2 is a rear view of the inserting device of the embodiment.
Fig. 3 is a partially enlarged plan view showing an enlarged portion of the cutting device in the inserting device of the embodiment.
Fig. 4 is a block diagram showing the control system of the inserting device of the embodiment.
Fig. 5 is a diagram showing processing executed by the inserting device of the embodiment.

Best examples for carrying out the invention are shown below.

(Example)

1 to 5 show a filamentous body insertion device 2 for a flat knitting machine in an embodiment. The inserting device 2 is used by being attached to a flat knitting machine, and the structure of the inserting device 2 is shown in FIGS. 1 and 2. 4 is a rail for driving the carrier of the flat knitting machine, and even if it is provided with a feeder line for communication with the controller of the flat knitting machine, a feeder line, etc. good night. A communication method between the insertion device 2 and the controller of the flat knitting machine is arbitrary.

The main structural members of the insertion device 2 are a carrier part 6, a fixed plate 9 fixed to the carrier part 6, and an elevating plate 10 that moves up and down relative to the fixed plate 9. The carrier unit 6 is provided with a plurality of rollers 7, and either runs on the rail 4 or is interlocked with a carriage of a flat knitting machine not shown in the drawing to run on the rail 4. move In the embodiment, 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 portion 6 and extends downward in the vertical direction. Of course, the stationary plate 9 and the carrier portion 6 may not be a combination of different members, but may be the same integral member from the beginning. The sliding part 18 of the elevating plate 10 is guided by the guide groove 19 formed in the fixed plate 9 . Further, for example, the lift motor 13 installed on the fixed plate 9 and the female screw portion 14 formed on the lift plate 10 are coupled by a feed screw 15. In this way, the elevation plate 10 is moved up and down while guiding the sliding portion 18 by the rotation of the elevation motor 13 . In addition to the above, for example, a control unit 12 and a power receiving unit 16 for non-contact power supply are attached to the fixed plate 9. In addition, a battery may be installed instead of the power reception unit 16, and power may be received from the power supply line 5 by a brush or the like.

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

The elevating plate 10 has an eyelet 22 for the filamentous body 20, and as shown in FIG. 2, a yarn feeding 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 by the same angle in the opposite direction to the pulleys 30 and 30 through the belts 29 and 29. is rotated in the reverse direction by the same number of revolutions. A pair of drive rollers 34, 34 are installed coaxially with the pulleys 30, 30 (FIG. 1), and the filamentous body 20 is sent out by the drive rollers 34, 34.

The yarn feeding motor 25 is controlled by the control unit 12 . The number of rotations of the yarn feeding motor 25 is monitored by an encoder (not shown), or the yarn feeding motor 25 is used as a pulse motor to feed the filamentous body 20 to a desired length.

There is a lower end part 32 on one side of the lower part of the elevating plate 10, and a pulley 30 and a driving roller 34 are attached to the lower end of the lower end part 32. Further, a pressing member 35 is installed on the other side of the lower part of the elevating plate 10 . The pressing member (35) has an arm (37) whose central portion is pivotally supported by a pin (36), 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 the pair of driving rollers 34 and 34. Since the pulley 30 and the driving roller 34 have a common axis, the rotation of the pulley 30 causes the driving roller 34 to rotate. Further, by pressing the arm 37, the pair of driving rollers 34, 34 are brought into contact with an appropriate nip pressure. Also, the structure of the pressing member 35 is arbitrary.

At the lower end of the elevating plate 10, at the lower end of the lower end 32 in the embodiment, a cutting device 40 is installed at a position downstream of the driving roller 34 in the yarn feeding direction. 41 is an eyelet for guiding the filamentous body 20 to 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 a drive unit 45 made of a small motor or 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, the control system of the insertion device 2 is shown. The inserting device 2 is operated by a power source such as the power receiving unit 16 and by 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 lifts the lifting plate 10 by the lifting motor 13 . Further, the control unit 12 rotates the drive roller 34 by the yarn feeding motor 25 to send out the filamentous body 20 of a desired length from the eyelet 22 . The cutting device 40 is operated by the control unit 12, the RFID 21 is located at a predetermined position from the beginning of the filamentous body 20, and the length of the filamentous body 20 inserted into the knitted fabric is desired. Cut the filamentous body 20 to length. When the RFID reader 24 detects the RFID 21 in the filamentous object 20, it notifies the control unit 12 of the ID of the RFID 21 or a tag indicating that the RFID 21 has been detected in addition to the ID. do. Even when only the ID is notified, the controller 12 can know that the RFID 21 has been detected. In addition, when the insertion device 2 moves along the rail 4, a traveling motor is added.

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

Sending out the filamentous body 20 so as not to form a stitch while moving the inserting device 2 along the course direction of the knitted fabric and inserting it into the knitted fabric (this process is called inlay);

Sending out the filamentous body 20 in the longitudinal direction along the wale direction of the knitted fabric and inserting it as a warp yarn without moving the insertion device,

· A filamentous body is fed to the needles of a flat knitting machine together with other knitting yarns, and processing such as forming stitches is performed.

The purpose of inserting the filamentous body 20 having the RFID 21 is production management and distribution management of knitted fabric. The RFID 21 is inserted into a predetermined position of 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 of knitted fabrics and data on distribution and sales are associated with individual IDs and stored. Then, when the ID of the RFID 21 is read and the RFID server is inquired at the time of shipment or sale, data related to production management, distribution, and sales is obtained. Instead of the RFID reader 24, an RFID reader/writer may be disposed, and production management data and the like may be stored in the RFID 21.

In the embodiment, the pitch of the RFID in the filamentous body 20 is equal to the insertion length (desired length) of the filamentous body 20. In addition, when the pitch of the RFID is longer than the desired length, after inserting the previous RFID, the filamentous body 20 is unwound and cut until the RFID reader detects the next RFID, and unnecessary parts are removed by suction, for example. . The inserting device 2 stands by at a position that does not interfere with knitting, such as an end of a needle bed of a flat knitting machine, and unwinds the filamentous body 20 from the yarn package. When the RFID reader 24 detects the RFID 21, it reports it to the controller 12. The above processing is referred to as 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 coupling an interlocking pin or the like of the carriage to the coupling groove 8 let it When the filamentous body 20 is unwound to a desired length by the driving roller 34 in synchronization with the movement of the inserting device 2 and cut by the cutting device 40, 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 filamentous body 20 may be knitted to form stitches. These processes are referred to as insertion processes (P2).

For knitting the knitted fabric, another yarn feeding device also travels on the rail 4 to feed the knitting yarn. There is a possibility that the lower end of another yarn feeding device and the lower end of the inserting device 2, particularly the cutting device 40, the yarn feeding motor 25, the drive roller 34, and the like may interfere. Therefore, when the elevating plate 10 is raised by the elevating motor 13, interference with other yarn feeding devices can be prevented. This processing is called evacuation processing (P3). In addition, the mechanism used for raising and lowering is arbitrary, such as a combination of a solenoid and a double speed mechanism.

In the case of inserting the filamentous body 20 by means of an inlay, it may be difficult to fix the filamentous body 20 at a predetermined position because the filamentous body 20 floats within the knitted fabric. In this case, by lowering the elevating plate 10 and pressing downward the filamentous body 20 inserted into the knitted fabric by, for example, the bottom surface of the cutting device 40, the filamentous body 20 is lifted from the knitted fabric. Press-in treatment (P4) is performed to prevent Instead of press-fitting through the bottom surface of the cutting device 40, an air supply pipe or the like not shown in the drawing may be installed and press-fit by air flow.

Variations of the examples will be described. Instead of evacuating by raising the lifting plate 10, evacuating may be performed by moving the inserting device 2 to a position in the knitting width direction where it does not interfere with other yarn feeding devices. The pressing member 35 can be changed to any member that applies pressure between the drive rollers 34 and 34 . Although the pressing member 35 is not essential, if the pressing member 35 or the like is installed, sliding of the filamentous body 20 relative to the driving roller 34 can be prevented. Since the filamentous body 20 becomes loose when the inserting device 2 is moved in a direction approaching the yarn feeding source, such as a side tension or an active yarn feeding device, it is important to absorb the loosened yarn by these. desirable.

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

In the embodiment, a filamentous body 20 having an RFID 21 is inserted, but the type of filamentous body is arbitrary. The RFID reader 24 can be changed to a different sensor depending on the type of the filamentous object 20, for example, a color sensor for detecting a colored part of the filamentous object or a thick portion formed at a specific location of the filamentous object. A thickness sensor or the like may also be used.

A pair of belts 29 and 29 were used to rotate the driving rollers 34 and 34 at the same speed by the yarn feeding motor 25 positioned slightly apart. However, the type of transmission means between the yarn feeding motor 25 and the drive roller 34 is arbitrary. Moreover, although the sliding of the filamentous body 20 can be reduced by driving a pair of drive rollers 34 and 34 together, you may drive only one roller. Although only one drive roller 34 was pressurized in the Example, you may press both drive rollers 34 and 34.

2: insertion device
4 : rail
5 : feeder line
6: carrier part
7 : Roller
8: coupling groove
9: fixed plate
10: lifting plate
12: control unit
13: lifting motor
14: female thread
15: feed screw
16: power supply
18: sliding part
19: guide home
20: Sasang body
21: RFID
22: eyelet
24: RFID reader
25: courier motor
26: Transmission
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: driving unit
46: support
50: controller of flat knitting machine

Claims (5)

In a carrier that can move along the rail of the flat knitting machine,
power receiving unit,
with the motor,
A pair of rollers, at least one of which is a drive roller driven by the motor, for inserting a filamentous body into a knitted fabric ;
A cutting device that is downstream of the pair of rollers and cuts the filamentous body when the pair of rollers inserts a filamentous body of a desired length
is installed ,
A filamentous body inserting device for a flat knitting machine characterized in that an elevating means for relatively elevating the motor, the pair of rollers, and the cutting device relative to the carrier is provided on the carrier.
According to claim 1,
A filamentous body inserting device for a flat knitting machine characterized in that a pressing means for pressing at least one of the pair of rollers in the direction of pressing the filamentous body is provided.
According to claim 1 or 2 ,
A filamentous body inserting device for a flat knitting machine, characterized in that a control means for controlling the motor and the cutting device is provided.
According to claim 1 or 2 ,
A filament inserting device for a flat knitting machine characterized in that a sensor for detecting filament elements is provided. delete

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