阅读说明：本技术 横机用的纱线状体的插入装置 (Yarn-shaped body insertion device for flat knitting machine ) 是由 今里晓允 藤本大海 小村善幸 于 2021-04-22 设计创作，主要内容包括：本发明提供一种横机用的纱线状体的插入装置。纱线状体的插入装置中,沿着横机的轨道而移动自如的托架具备电源、电动机、被电动机驱动而进行纱线状体的送出的一对辊、相比一对辊位于下游而将纱线状体切断的切断装置。能够将期望长度的纱线状体准确地插入到针织物内。(The invention provides an inserting device of a yarn-shaped body for a flat knitting machine. In the insertion device for the yarn-shaped bodies, a carriage which is movable along a rail of the weft knitting machine includes a power source, a motor, a pair of rollers which are driven by the motor to feed the yarn-shaped bodies, and a cutting device which is located downstream of the pair of rollers and cuts the yarn-shaped bodies. The desired length of the filament-like body can be accurately inserted into the knitted fabric.)

1. An insertion device (2) for a yarn-shaped body for a weft knitting machine,

the following members are provided on a carriage (6) which is movable along a rail (4) of a weft knitting machine:

a power receiving unit (16);

an electric motor (25);

a driving roller which is a pair of rollers (34,34) for feeding the yarn-like body (20) and at least one of which is driven by the motor; and

and a cutting device (40) which is located downstream of the pair of rollers (34,34) and cuts the thread-like body (20) fed from the pair of rollers.

2. The inserting device of a threadlike body for a flat knitting machine according to claim 1,

the carriage (6) is provided with lifting means (13-15), and the lifting means (13-15) lifts and lowers the motor (25), the pair of rollers (34), and the cutting device (40) relative to the carriage (6).

3. A threadlike body insertion device for flat knitting machines according to claim 1 or 2,

an urging unit (35) is provided, and the urging unit (35) urges at least 1 roller (34) of the pair of rollers in a direction in which the yarn-shaped body is pressurized.

4. The device for inserting a thread-like body for a weft knitting machine according to any one of claims 1 to 3,

a control unit (12) is provided, which control unit (12) controls the electric motor (25) and the cutting device (40).

5. The device for inserting a thread-like body for a weft knitting machine according to any one of claims 1 to 4,

a sensor (24) is provided, and the sensor (24) detects the element (21) of the thread-like body.

Technical Field

The present invention relates to a device that is used by being attached to a flat knitting machine and inserts a yarn-shaped body into a knitted fabric, the yarn-shaped body being configured by a yarn to which an rfid (radio frequency identifier) is attached, a metal yarn, a yarn having a color mark, or the like.

Background

When knitting a knitted fabric with a flat knitting machine, a yarn other than a normal knitting yarn may be inserted into the knitted fabric. For example, insertion of a yarn-like body with an RFID attached thereto is effective in production management and circulation management of knitted fabrics. In addition to RFID, it is sometimes desirable to insert a yarn marked by partially coloring the yarn, a decorative metal yarn, or the like. The object to be inserted is in the form of a yarn or a tape, and is inserted while being shorter than the knitting yarn in length, and therefore is referred to as a yarn-like body in the present specification.

The related prior art is shown below. Patent document 1(US7246508B) discloses an insertion device of a color stay (stay for collar). The insertion device takes out the color stays one by one in the housing, and inserts the color stays into the knitted fabric by pushing out the color stays. Patent document 2(US2018/282914a) discloses a yarn feeder including a cutter, a clip, and a tube of pressurized air for feeding out a knitting yarn. The yarn feeder cuts a knitting yarn at a desired position, and draws out the knitting yarn by an air flow after the cutting.

[ Prior Art document ]

[ patent document ]

[ patent document 1 ] US7246508B

[ patent document 2 ] US2018/282914A

Disclosure of Invention

The device of patent document 1 is not suitable for inserting a thread-like body. The device of patent document 2 feeds out the yarn by the air flow, and is therefore not suitable for accurately inserting a desired length of the yarn-like body.

The invention provides an insertion device, which can accurately insert a yarn-shaped body with a desired length into a knitted fabric.

In the insertion device for a yarn-shaped body for a flat knitting machine according to the present invention, the following members are provided on a carriage which is movable along a rail of the flat knitting machine: a power receiving unit; an electric motor; a driving roller which is a pair of rollers for feeding the yarn-like body and at least one of which is driven by a motor; and a cutting device which is located downstream of the pair of rollers and cuts the yarn-like body fed from the pair of rollers.

The insertion device of the present invention moves along a rail of a flat knitting machine, and inserts a thread-like body into a knitted fabric by driving a driving roller by a motor. Then, after the desired length of the thread-like body is inserted, the thread-like body is cut by the cutting device. As a result, the yarn-like body having a desired length can be accurately inserted into a desired position of the knitted fabric. When a battery is used as a power source, a terminal receiving power from the battery corresponds to a power receiving unit.

Preferably, the carriage further includes an elevating unit for elevating and lowering the motor, the pair of rollers, and the cutting device relative to the carriage. When the motor, the cutting device, and the like are raised, interference with another yarn feeder can be prevented. Therefore, by moving the insertion device along the rails of the flat knitting machine, there is no need to prevent interference.

Preferably, the yarn feeding device further includes a biasing unit that biases at least 1 of the pair of rollers in a direction in which the yarn-shaped body is pressurized. This prevents the yarn-shaped body from deviating from the desired length from the length of the yarn-shaped body inserted by sliding the roller.

Preferably, a control unit is further provided, which controls the motor and the shut-off device. If the motor and the cutting device are controlled remotely by a controller of the flat knitting machine or the like, a burden of communication or the like increases. When the control unit in the insertion device receives a command from a controller of the weft knitting machine or the like to control the motor and the cutting device, the control becomes simple.

Preferably, a sensor is also provided, which detects an element of the thread-like body. The positions of the elements in the thread-like body can be known by the control unit, so that the elements of the thread-like body can be arranged at desired positions within the knitted fabric.

Preferably, a drive belt is further provided, which is driven by a motor and drives the drive roller, particularly preferably a pair of drive belts, which drives the pair of drive rollers. The drive roller and the motor can be disposed at separate positions by belt driving, and power transmission therebetween can be performed compactly. If a pair of drive belts is provided, the pair of drive rollers can be driven together.

Drawings

FIG. 1 is a front view of an insertion device of an embodiment;

FIG. 2 is a rear view of the insertion device of the embodiment;

FIG. 3 is a partially enlarged plan view showing a cutting device in the insertion device of the embodiment in a partially enlarged manner;

FIG. 4 is a block diagram showing a control system of the insertion device of the embodiment;

fig. 5 is a diagram showing a process performed by the insertion apparatus of the embodiment.

[ Mark Specification ]

2 insertion device

4 track

5 feed wire

6 bracket part

7 roller

8 engaging groove

9 fixed plate

10 lifting plate

12 control part

13 lifting motor

14 internal screw thread part

15 feed screw

16 power receiving unit

18 sliding part

19 guide groove

20 yarn-shaped body

21 RFID

22 yarn guide

24 RFID reader

25-feed motor

26 speed variator

27 belt wheel

28 Gear

29 strap

30 belt wheel

32 lower end part

34 drive roller

35 force applying component

36 pin

37 arm

38 spring

39 pin

40 cutting device

41 yarn guide

42 fixed blade

43 Movable blade

44 shaft

45 driving part

46 support part

Controller of 50 flat knitting machine

Detailed Description

The following shows preferred embodiments for practicing the invention.

[ examples ] A method for producing a compound

Fig. 1 to 5 show an insertion device 2 for a thread-like body for a flat knitting machine according to an embodiment. The insertion device 2 is used by being attached to a weft knitting machine, and fig. 1 and 2 show the structure of the insertion device 2. Reference numeral 4 denotes a rail for running the carriage of the weft knitting machine, and may include a feeder 5 such as a non-contact feeder, a communication feeder for communicating with a controller of the weft knitting machine, and the like. The communication method of the insertion device 2 and the controller of the weft knitting machine is arbitrary.

The main components of the insertion device 2 are a bracket portion 6, a fixed plate 9 fixed to the bracket portion 6, and a lifting plate 10 which is lifted relative to the fixed plate 9. The carriage portion 6 includes a plurality of rollers 7, and moves on the rail 4 while traveling on the rail 4 or interlocking with a carriage of a flat knitting machine, not shown. In the embodiment, the bracket portion 6 is interlocked with the carriage, and the bracket portion 6 includes an engagement groove 8 for engaging with an interlocking pin (not shown) of the carriage.

The fixing plate 9 is fixed to the bracket portion 6 and vertically hangs down. Of course, the fixing plate 9 and the bracket portion 6 may be the same member integrally formed from the beginning without combining different members. The slide portion 18 of the lifter plate 10 is guided by a guide groove 19 provided in the fixed plate 9. The lifting motor 13 provided on the fixing plate 9 and the female screw portion 14 provided on the lifting plate 10 are coupled to each other by the feed screw 15. In this way, the lifting plate 10 is lifted and lowered while the sliding portion 18 is guided by the rotation of the lifting motor 13. In addition to the above components, the fixed plate 9 is provided with, for example, a control unit 12 and a power receiving unit 16 for non-contact power feeding. Instead of the power receiving unit 16, a battery may be provided, or power may be received from the power feeding wire 5 through a brush or the like.

Reference numeral 20 denotes a yarn body to be inserted, and the yarn is fed from a yarn package not shown through a buffer such as a side tension portion. An active yarn feeder or the like capable of feeding a desired length of yarn body in both forward and reverse directions may be provided upstream of the side tension section. In the embodiment, the thread-like bodies 20 are yarns on which the RFIDs 21 (elements of the thread-like bodies) are attached at a predetermined pitch, and the attachment pitch of the RFIDs 21 is set to be the same as a desired length when the RFID is inserted into the knitted fabric.

The lifting plate 10 includes a yarn guide 22 for the yarn-shaped body 20, and as shown in fig. 2, further includes a yarn feeding motor 25, a transmission 26, a pair of pulleys 27, a gear 28, a belt 29, and a pulley 30. Then, the rotation of the yarn feeding motor 25 is decelerated by the transmission 26, the gears 28 and 28 engaged with each other are rotated in opposite directions by the same angle, and the pulleys 30 and 30 are rotated in opposite directions at the same rotation speed via the belts 29 and 29. A pair of driving rollers 34,34 (fig. 1) are provided coaxially with the pulleys 30, and the filament members 20 are fed by the driving rollers 34, 34.

The yarn feeding motor 25 is controlled by the control section 12. The yarn feeding motor 25 is fed in a desired length by monitoring the rotation speed of the yarn feeding motor 25 by an encoder not shown or by using the yarn feeding motor 25 as a pulse motor.

The lifter plate 10 has a lower end portion 32 at one side of the lower portion thereof, and a pulley 30 and a drive roller 34 are attached to a lower end of the lower end portion 32. The other side of the lower portion of the elevating plate 10 is provided with an urging member 35. The biasing member 35 includes an arm 37 pivotally supported at a central portion thereof by a pin 36, an upper portion of the arm 37 is biased by a tension spring 38, and the other end of the tension spring 38 is fixed to a pin 39. A pulley 30 and a driving roller 34 are also provided at the lower end of the arm 37, and the filament body 20 is fed out from between the pair of driving rollers 34, 34. The shafts of the pulley 30 and the drive roller 34 are common, and the drive roller 34 rotates by the rotation of the pulley 34. The pair of driving rollers 34,34 are brought into contact with an appropriate nip pressure by the urging force of the arm 37. The structure of the urging member 35 is arbitrary.

A cutting device 40 is provided at the lower end of the lifting plate 10, in the embodiment, at the lower end of the lower end portion 32 and on the downstream side in the yarn feeding direction from the drive roller 34. Reference numeral 41 denotes a guide for guiding the thread-like bodies 20 to the cutting device 40. The cutting device 40 is constructed as shown in fig. 3. The yarn-like body 20 passes between the fixed blade 42 and the movable blade 43, and the shaft 44 of the movable blade 43 is rotated by a driving unit 45 including a small motor, a solenoid, or the like, thereby cutting the yarn-like body 20. Reference numeral 46 denotes a support portion for attaching the cutting device 40 to the lower end portion 32.

Fig. 4 shows a 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 is operated by a command from the controller 50 of the weft knitting machine. The control unit 12 communicates with a controller 50 of the weft knitting machine, and raises and lowers the lifting plate 10 by the lifting motor 13. The control section 12 rotates the drive roller 34 by the yarn feeding motor 25 to feed the thread-like body 20 of a desired length from the yarn guide 41. The cutting device 40 is operated by the control unit 12 to cut the thread-like body 20 so that the RFID21 is provided at a predetermined position from the start end of the thread-like body 20 and the length of the thread-like body 20 inserted into the knitted fabric becomes a desired length. When the RFID reader 24 detects the RFID21 in the thread-like body 20, the ID of the RFID21 or a tag indicating that the RFID21 is detected in addition to the ID is notified to the control unit 12. Even when only the ID is notified, the control unit 12 determines that the RFID21 is detected. When the insertion device 2 is caused to self-travel along the rail 4, a travel motor is added.

The operation of the insertion device 2 of the embodiment is shown in fig. 5. The insertion device 2 performs the following processes:

while moving the insertion device 2 along the course direction of the knitted fabric, the yarn-like body 20 is fed out and inserted into the knitted fabric so as not to constitute a stitch (this process is referred to as a yarn laying);

feeding the thread-like body 20 in the longitudinal direction along the wale direction of the knitted fabric without moving the insertion device, and inserting the thread-like body as a warp;

the yarn-shaped body is fed to the needle of the flat knitting machine together with another knitting yarn to form a stitch.

The purpose of inserting the filament body 20 having the RFID21 is production management, distribution management, and the like of the knitted fabric. The RFID21 is inserted into a predetermined position of the knitted fabric, and the ID of the RFID21 is read by the RFID reader 24 and stored in an RFID server, not shown. The RFID server stores data on production management of knitted fabrics, data on distribution and sales, and each ID in association with each other. The ID of the RFID21 is read at the time of shipment, sale, or the like, and data relating to production management, distribution, and sale is obtained when queried by the RFID server. Instead of the RFID reader 21, an RFID reader may be provided so that the RFID21 stores data such as production management data.

In the embodiment, the pitch of the RFID in the yarn-shaped body 20 is equal to the insertion length (desired length) of the yarn-shaped body 20. When the pitch of the RFID is longer than the desired length, the yarn-like body 20 is pulled out and cut after the previous RFID is inserted and before the next RFID is detected by the RFID reader, and unnecessary portions, for example, are removed by suction. The insertion device 2 waits at a position such as an end portion of a needle bed of the flat knitting machine where knitting is not obstructed, and draws out the yarn-like body 20 from the yarn package. The RFID reader 24 detects the RFID21 and reports it to the control unit 12. The above process is referred to as standby process P1.

In the embodiment, the controller 50 of the weft knitting machine controls a carriage (not shown) of the weft knitting machine, and causes the interlocking pin of the carriage to engage with the engagement groove 8, thereby moving the insertion device 2 to a desired position. The thread-like body 20 is pulled out by a desired length by the driving roller 34 in synchronization with the movement of the insertion device 2, and after being cut by the cutting device 40, the RFID21 can be inserted into a desired position in the knitted fabric. Here, since the thread-like bodies 20 are fed by the pair of driving rollers 34,34 and pressure is applied between the rollers 34,34 by the biasing member 35, the thread-like bodies 20 of a desired length can be accurately inserted. At this time, the yarn-like body 20 may be looped to form a loop. These processes are referred to as insertion processes P2.

For knitting a knitted fabric, another yarn feeder also travels on the rail 4 to feed a knitting yarn. There is a possibility that the lower end of another yarn feeding device interferes with the lower end of the insertion device 2, particularly the cutting device 40, the yarn feeding motor 25, the drive roller 34, and the like. Therefore, when the lifting plate 10 is lifted by the lifting motor 13, interference with another yarn feeder can be prevented. This process is referred to as backoff process P3. The mechanism for lifting and lowering is arbitrary, and for example, a combination of a solenoid and a double speed mechanism, or the like.

When the thread-like bodies 20 are inserted by the inlay yarn, the thread-like bodies 20 may float in the knitted fabric, and thus may be difficult to fix at a predetermined position. In this case, the following pressing process P4 is performed: the lifting plate 10 is lowered, for example, by the bottom surface of the cutting device 40, and the thread-like bodies 20 inserted into the knitted fabric are pressed downward, thereby preventing the thread-like bodies 20 from floating from the knitted fabric. Instead of pressing with the bottom surface of the cutting device 40, an air supply pipe or the like, not shown, may be provided and pressed with an air flow.

The following describes modifications of the embodiments. Instead of moving up the lifting plate 10 to retract it, the insertion device 2 may be moved to a position in the knitting width direction where it does not interfere with another yarn feeder to retract it. The biasing member 35 can be changed to any member that applies pressure between the driving rollers 34, 34. The biasing member 35 is not an essential component, but if the biasing member 35 is provided, the yarn-like body 20 can be prevented from sliding with respect to the drive roller 34. When the insertion device 2 is moved in a direction approaching the yarn feeder such as the side tension unit or the active yarn feeder, the yarn-like bodies 20 are loosened, and therefore it is preferable to absorb the loosened yarn by these.

Instead of providing the control unit 12, the respective elements of the insertion device 2 may be controlled by the controller 50 of the weft knitting machine by communication via the rail 4 or the like. On the other hand, if the control unit 12 controls each element of the insertion device 2, the control becomes simpler than the control by the controller 50 of the weft knitting machine.

In the example, the yarn-like body 20 having the RFID21 is inserted, but the kind of the yarn-like body is arbitrary. The RFID reader 24 may be changed to another sensor depending on the type of the thread-like body 20, such as a color sensor for detecting a colored portion of the thread-like body, a thickness sensor for detecting a thick portion provided at a specific portion of the thread-like body, or the like.

In order to rotate the drive rollers 34,34 at the same speed by the yarn feed motor 25 present at slightly separated positions, a pair of belts 29, 29 is used. However, the type of the transmission unit between the yarn feeding motor 25 and the driving roller 34 is arbitrary. The pair of driving rollers 34,34 are driven together, whereby the slippage of the filament-like body 20 can be reduced, but only one of the rollers may be driven. In the embodiment, only one of the driving rollers 34 is urged, but both of the driving rollers 34,34 may be urged.