JP7048392B2 - Flat knitting machine - Google Patents

Description

The present invention relates to a flat knitting machine.

A flat knitting machine provided with a needle bed in which a plurality of knitting needles are lined up is provided with a plurality of moving bodies attached to a rail and traveling along the rail to be involved in knitting the knitted fabric. For example, examples of the moving body include a yarn feeder (hereinafter, may be referred to as YF) that feeds the knitting yarn to the knitting needle of the needle bed.

Patent Document 1 discloses a configuration in which a YF is driven by a linear motor, a drive motor or the like is attached to the YF, and the YF is self-propelled. The drive motor and its control device provided in the YF are supplied with electric power by contact feeding via a contact strip provided on the rail.

Patent Document 2 discloses a moving body (reference numeral 300 of Patent Document 2) that travels on a rail to which a YF is attached, inserts a conversion pin into the YF, and carries the YF. In Patent Document 2, power is supplied to the moving body by contact between the conductive sheet provided on the rail and the carbon brush provided on the moving body, and the conversion pin is taken in and out.

German Patent Application Publication No. 4308251. Chinese Patent Application Publication No. 101139777

All of the prior arts are configured to supply electric power to a mobile body by contact power supply. However, in a knitting environment where oil and dust fly around, oil and dust may enter the contact points and hinder power supply. Further, in the configuration in which the contact power supply is performed, the power supply may be hindered by the wear of the contact portion.

The present invention has been made in view of the above circumstances, and one of the objects of the present invention is to provide a flat knitting machine that feeds a moving body provided in the flat knitting machine in a non-contact manner.

The flat knitting machine of the present invention is
In a flat knitting machine equipped with a needle bed in which a plurality of knitting needles are lined up and a moving body that is involved in knitting the knitted fabric by running along a rail.
A primary coil that has an axis parallel to the rail axis and is connected to the power supply of the flat knitting machine.
A cylindrical member provided on the moving body and through which the primary coil is inserted, and
A secondary coil that is wound around the outer circumference of the tubular member and is powered by electromagnetic induction from the primary coil.
A control circuit provided on the moving body and connected to the secondary coil,
It includes at least one electric device provided on the moving body and controlled by the control circuit to operate.

As a form of the flat knitting machine of the present invention,
The moving body may be in the form of a yarn feeder that feeds the knitting yarn to the knitting needle.

As a form of the flat knitting machine of the present invention,
The primary coil may be arranged in an empty space on the lower side of the rail.

As a form of the flat knitting machine of the present invention,
Examples thereof include a form provided with a straightening means for straightening the axis of the primary coil so as to be parallel to the rail.

As one embodiment of the present invention provided with corrective means,
It is provided with a series of holding members that hold the primary coil and are connected to the immovable member of the flat knitting machine.
The form in which the primary coil is corrected by the holding member can be mentioned.

As a form of the flat knitting machine of the present invention provided with a straightening means,
A form in which the primary coil is corrected by mechanically connecting both ends of the primary coil to an immovable member of a flat knitting machine while a tensile tension is applied to the primary coil can be mentioned. can.

As a form of the flat knitting machine of the present invention,
Examples thereof include a form in which the moving body is provided with a movable support mechanism that supports the tubular member so as to be displaceable at least in the vertical direction.

As a form of the flat knitting machine of the present invention,
Examples of the secondary coil include a form in which a plurality of split coils separated in the extending direction of the primary coil are connected in series.

As a form of the flat knitting machine of the present invention,
The moving body is a yarn feeder that feeds the knitting yarn to the knitting needle.
The electric device may be in the form of a tension sensor that measures the tension of the knitting yarn.

As a form of the flat knitting machine of the present invention,
A plurality of the moving bodies are arranged on the rail,
The electric device is an optical wireless transceiver, and is
Examples thereof include a mode in which the mobile body is relayed from one end side to the other end side of the rail to perform optical wireless communication.

According to the flat knitting machine of the present invention, since the moving body provided in the flat knitting machine can be fed non-contactly, the problem of poor contact caused by the contact feeding can be eliminated. Further, by inserting the primary coil inside the tubular member that holds the secondary coil, the non-contact power feeding mechanism composed of the primary coil and the secondary coil can be compactly integrated.

Since the YF is located near the knitting location, various information related to the knitting state can be obtained by configuring the YF so that power can be supplied to the YF. For example, as will be described later, a tension sensor may be provided in the YF to obtain information on the tension of the knitting yarn, or a position sensor may be provided in the YF to obtain information on the accurate position of the YF. It is also possible to provide a plurality of electric devices in the YF, obtain a plurality of information from each electric device, and execute a plurality of operations.

By providing the primary coil in the empty space on the lower side of the rail, it is not necessary to make design changes to the mechanism other than the moving body to which the configuration of the present invention is applied. For example, it is possible to realize a compact non-contact power feeding mechanism without increasing the size of each device configuration of the flat knitting machine, such as widening the distance between adjacent rails.

By suppressing the bending of the shaft of the primary coil with a correction means for correcting the bending and distortion of the primary coil, the movement of the tubular member arranged outside the primary coil can be smoothed. As will be described later, the straightening means includes a means that uses some kind of straightening member and a means that does not use the straightening member.

By using the holding member as the straightening member, it is possible to suppress the bending of the shaft of the primary coil due to the bending and distortion of the primary coil.

A member that corrects the primary coil because the bending of the shaft of the primary coil can be suppressed by taking a straightening means that mechanically connects the primary coil to the immovable member of the flat knitting machine while applying tensile tension to the primary coil. Can be omitted.

By supporting the tubular member on the moving body via the movable support mechanism, the tubular member holding the secondary coil can move smoothly along the primary coil even if the axial center of the primary coil is bent. ..

By dividing the secondary coil into a plurality of divided coils, the axial length of the tubular member holding each divided coil can be shortened, so that the tubular member can easily follow the deflection of the primary coil. Further, since each divided coil is short, the degree of freedom in arranging the secondary coil is high. Therefore, the secondary coil can be arranged at a position that does not interfere with the member near the traveling route of the moving body.

By providing the tension sensor in the YF, the tension of the knitting yarn can be measured at a position close to the knitting point, and a quick response can be taken according to the measurement result. For example, the knitting can be stabilized by adjusting the tension of the knitting yarn or adjusting the feeding amount of the knitting yarn with a tension adjusting device provided on the YF or on the yarn feeding path outside the YF.

By providing an optical radio transceiver in the mobile body, information can be exchanged between the computer of the flat knitting machine and the mobile body. For example, if the moving body is a YF, the information may include information about the position of the YF.

It is a schematic front view of the flat knitting machine which concerns on embodiment. It is a schematic diagram of the yarn feeder seen from one side of the rail. It is a schematic diagram of the yarn feeder seen from the opposite side of FIG. It is a schematic perspective view of the non-contact power feeding mechanism including a primary coil and a secondary coil. It is a schematic block diagram of the optical wireless communication which relays a yarn feeder.

<Embodiment 1>
The flat knitting machine 1 according to the embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

As shown in FIG. 1, the flat knitting machine 1 supplies knitting yarn 9 to a pair of needle beds 1B arranged facing each other in the depth direction of the paper surface and a tooth opening formed between both needle beds 1B. It is equipped with yarn feeders (hereinafter, YF) 2A to 2D. A plurality of knitting needles are provided in parallel on the needle bed 1B, and these knitting needles are driven by a cam system (not shown) mounted on the carriage 1C reciprocating on the needle bed 1B. On the other hand, YF2A to 2D travel along the rail 1R. The rail 1R is erected on both ends of the flat knitting machine 1 and is bridged between a pair of frames 1FR and 1FL which are immovable members integrally formed with the flat knitting machine 1. A plurality of rails 1R are arranged in parallel in the depth direction of the paper surface, and each of the rails 1R extends above the needle bed 1B and parallel to the needle bed 1B. Hereinafter, when talking about common to YF2A to 2D, each YF2A to 2D is referred to as YF2 without distinction.

In this example, a plurality of YF2s are attached to one rail 1R. YF2A and 2B are attached to the surface on the front side of the paper surface of the rail 1R, and YF2C and 2D are attached to the surface on the back side of the paper surface of the rail 1R. These YF2s travel along the rail 1R by being selected and taken by the selector 1S that covers above the rail 1R. The YF2 is selected by engaging the haunting type conversion pin provided in the selector 1S with the YF2. The selector 1S is connected to the carriage 1C and moves integrally with the carriage 1C. The selector 1S selects and entrains YF2 to be used for knitting, so that knitting is performed with the knitting yarn 9 supplied from YF2. The configuration in which the YF2 is driven is not limited to the configuration of this example, and the configuration in which the YF2 is self-propelled may be used. The operation of the carriage 1C and the selector 1S is controlled by the computer 10 provided in the flat knitting machine 1.

The YF2 has a top spring device 90 and a side tension device (not shown) on the side of the flat knitting machine 1 from a knitting yarn supply source (not shown) such as a cone arranged above the flat knitting machine 1. The knitting yarn 9 unwound through the yarn 9 is supplied. That is, the YF2 of this example has a configuration in which the knitting yarn 9 is fed from the side thereof. Unlike this example, the knitting yarn 9 may be fed from above the YF2.

In the flat knitting machine 1 of this example, a control circuit and at least one electric device controlled and operated by the control circuit are provided in the YF 2, and the control circuit and the non-contact power feeding mechanism 3 for supplying power to the electric device are provided. There is. First, the schematic configuration of YF2A of this example will be briefly described with reference to FIGS. 2 and 3, and then the non-contact power feeding mechanism 3 will be described. Finally, the control circuit and the electric device operated by the electric power from the non-contact power feeding mechanism 3 will be mentioned.

≪Yarn feeder≫
FIG. 2 is a view of the YF2A attached to the rail 1R as viewed from the front side of the paper surface of FIG. 1, and FIG. 3 is a view of the YF2A as viewed from the back side of the paper surface of FIG. In FIGS. 2 and 3, only the ridge 1b provided on the side surface of the rail 1R and with which the YF2A slides is shown. For convenience, the side of FIG. 2 is the front surface of YF2A, and the side of FIG. 3 is the back surface of YF2A. The YF2A of this example shown in FIGS. 2 and 3 includes a main body portion 2M, a lower mounting portion 2L, an upper mounting portion 2U, and a connecting portion 2J. Of course, the configuration of YF2A shown in FIGS. 2 and 3 is only an example, and the configuration is not limited to such a configuration. In FIGS. 2 and 3, the knitting yarn 9 is emphasized in order to make it easier to understand the path of the knitting yarn 9.

The main body 2M is a long plate material that includes traveling rollers 2r that sandwich the ridges 1b of the rail 1R from above and below, and extends downward from the position of the rail 1R. More specifically, the main body portion 2M is divided into a carrier portion 2a provided with a traveling roller 2r and a hanging portion 2b extending downward from the carrier portion 2a. From the viewpoint of ensuring strength, the main body 2M is preferably made of metal. A pin groove 2h into which the conversion pin of the selector 1S of FIG. 1 is inserted / removed is provided on the upper edge of the carrier portion 2a. On the other hand, a yarn feeding port 2f for guiding the knitting yarn 9 to the tooth opening is provided at the lower end of the hanging lower portion 2b, and a roller-shaped introduction guide 21 for guiding the knitting yarn 9 to the yarn feeding port 2f side is provided slightly above the intermediate portion. It is provided. The introduction guide 21 of this example is composed of a roller having a rotation axis extending in the thickness direction of the main body portion 2M. The introduction guide 21 is provided in a portion of the small pieces extending in the extending direction of the rail 1R and fixed to the hanging portion 2b, which protrudes from the hanging portion 2b. The introduction guide 21 is not limited to the roller, and may be, for example, a tubular member through which the knitting yarn 9 can be inserted.

The lower mounting portion 2L is mounted at a position below the introduction guide 21. In the drawing, the lower mounting portion 2L looks like a plate-shaped member, but it is actually composed of a combination of plate pieces and aggregates. The lower mounting portion 2L is for providing an electric device such as the tension sensor 4 and the tension adjusting device 5 shown in FIG. 3, and is made of an insulating material. A part of the lower mounting portion 2L overhangs to the side of the main body portion 2M when the YF2A is viewed from the front from a direction orthogonal to the extending direction of the rail 1R, and is on the back side (the side of FIG. 3) of the overhanging portion. A tension sensor 4 and a tension adjusting device 5 are provided.

The upper mounting portion 2U is a plate-shaped member provided on the front side (side of FIG. 2) of the carrier portion 2a. The upper mounting portion 2U is for providing a control circuit 20 and the like, which will be described later, and is made of an insulating material. The front side of the carrier portion 2a may be formed in a box shape, and the upper mounting portion 2U may be housed inside the carrier portion 2a. In this case, if the carrier portion 2a is provided with a lid, the control circuit 20 can be protected from dust and oil.

As shown in FIG. 4, the connecting portion 2J extends diagonally downward with three vertical pieces j1, j2, j3 and two horizontal pieces j4, j5 connecting the upper ends and the lower ends of the vertical pieces j1 to j3. It is composed of two arm portions 24a and 24a. The connecting portion 2J is a member for attaching the second assembly 3B of the non-contact power feeding mechanism 3 described later to the YF 2A, and is connected to the upper mounting portion 2U in this example.

≪Non-contact power supply mechanism≫
In the description of the non-contact power feeding mechanism 3, in addition to FIGS. 2 and 3, FIG. 4 which is a partially enlarged view of the vicinity of the non-contact power feeding mechanism 3 in YF2A is also referred to.

As shown in FIG. 4, the non-contact power feeding mechanism 3 includes a primary coil 31 connected to a power source of the flat knitting machine 1 and a secondary coil 32 provided on the YF2A side. If the primary coil 31 and the secondary coil 32 are maintained in a non-contact state, when an alternating current is applied to the primary coil 31, a current flows through the secondary coil 32 by electromagnetic induction. In this example, the secondary coil 32 is formed by connecting two divided coils 32a and 32b in series, and both ends of the secondary coil 32 are electrically connected to a control circuit 20 described later. .. That is, the secondary coil 32 functions as a feeding unit that supplies the electric power obtained from the primary coil 31 by electromagnetic induction to the control circuit 20.

The primary coil 31 has an axis line parallel to the axis of the rail 1R, and has a length corresponding to the movement range of YF2A. In this example, the primary coil 31 has a length equivalent to that of the rail 1R. As shown in FIG. 4, a core 31c made of a magnetic member such as ferrite is arranged inside the primary coil 31 of this example. The primary coil 31 is held by a gutter-shaped holding member (correcting member) 33 from below, and is corrected so as to be parallel to the rail 1R. The holding member 33 of this example is a member having a series length connected to the frames 1FL and 1FR of the flat knitting machine 1, and the cross-sectional shape orthogonal to the axial direction of the holding member 33 is angular with an opening at the top. It is C-shaped. The first assembly 3A in which the primary coil 31 is arranged and held is formed so that a part of the primary coil 31 is fitted into the inside of the holding member 33 from the opening of the holding member 33. The holding member 33 may be formed in such a size that the primary coil 31 is contained therein. Here, the holding member 33 is not particularly limited as long as it has a shape that can support the primary coil 31.

The secondary coil 32 is wound around the outer circumference of the tubular member 34. A primary coil 31 is inserted together with a holding member 33 inside the tubular member 34 so that the tubular member 34 around which the secondary coil 32 is wound can move along the axial direction of the primary coil 31. It has become. Since the primary coil 31 and the secondary coil 32 are maintained in a non-contact state by the tubular member 34, when an alternating current is applied to the primary coil 31, an induced current flows through the secondary coil 32 by electromagnetic induction. The internal shape of the tubular member 34 is preferably a shape that follows the outer shape of the first assembly 3A.

Here, in the flat knitting machine 1, since a plurality of rails 1R are arranged in the front-rear direction of the flat knitting machine 1, it is difficult to arrange the primary coil 31 between each rail 1R. Further, in the flat knitting machine 1 of this example, since the selector 1S travels above the rail 1R, in order to arrange the primary coil 31 above the rail 1R, the selector 1S must be retracted above the current state. This leads to an increase in the size of the flat knitting machine 1. In addition, when the primary coil 31 is arranged above the rail 1R, the secondary coil 32 provided in the YF2A must also be provided above the YF2A, which increases the size of the YF2A. On the other hand, in the configuration of this example, since the first assembly 3A is provided by utilizing the empty space on the lower side of the rail 1R, the configuration other than YF2A such as the cover is not changed in design. The non-contact power feeding mechanism 3 can be constructed compactly. When the YF2A is a self-propelled type, the selector 1S is not required, so that the primary coil 31 can be arranged above the rail 1R.

The secondary coil 32 of this example is formed by connecting a plurality of divided coils 32a and 32b separated in the stretching direction of the primary coil 31 in series. The divided coils 32a and 32b are wound around the outer circumferences of the tubular members 34 and 34 that are independent of each other. The second assembly 3B composed of the split coil 32a and the tubular member 34 and the other second assembly 3B composed of the split coil 32b and the tubular member 34 are orthogonal to each other in the extending direction of the rail 1R. When the YF2A is viewed from the front, they are arranged on the left and right sides of the YF2A. According to such a configuration, the axial length of the tubular member 34 holding the divided coils 32a and 32b can be shortened. As a result, the tubular member 34 (second assembly 3B) can easily follow the bending and distortion of the primary coil 31 (first assembly 3A), and the tubular member 34 can be smoothly moved. Further, if the second assembly 3B is arranged at the left and right positions of the YF2A when viewed from the front, the second assembly 3B can be prevented from interfering with other members in the vicinity of the traveling route of the YF2A. Although the number of the divided coils 32a and 32b in this example is two, it may be three or more. Also in this case, the second assembly 3B is arranged at a position that does not interfere with other members in the vicinity of the traveling route of YF2A.

The second assembly 3B is attached to the connecting portion 2J of the YF2A via the movable support mechanism 24 (particularly, see FIG. 4). The configuration of the movable support mechanism 24 is not limited as long as it can support the tubular member 34 so as to be displaceable at least in the vertical direction with respect to YF2A. The movable support mechanism 24 of this example includes an arm portion 24a extending from the connecting portion 2J and a housing 24h connected to the second assembly 3B and accommodating the tip of the arm portion 24a. A support shaft 24b extends from the upper inner peripheral surface of the housing 24h and is loosely fitted into a through hole at the tip of the arm portion 24a, and an elastic body 24s such as a compression spring is arranged on the outer periphery of the support shaft 24b. There is. With such a configuration, the second assembly 3B integrated with the housing 24h urged by the elastic body 24s can be displaced in the vertical direction along the support shaft 24b. Further, in this example, since the tip of the support shaft 24b is loosely fitted in the through hole of the arm portion 24a, the housing 24h can be displaced within a predetermined solid angle range with the tip as a reference. Therefore, in this example, the second assembly 3B can be displaced with respect to YF2A in a direction other than the vertical direction.

Here, the movable support mechanism 24 is not limited to the configuration shown in FIG. For example, a movable support mechanism 24 in which the connecting portion 2J and the second assembly 3B are simply connected by an elastic body such as a compression spring can be mentioned.

≪Electrical equipment and control circuit≫
The control circuit 20 is provided on the front side of the upper mounting portion 2U and operates by the electric power from the secondary coil 32. The control circuit 20 includes a control unit that controls each electric power device mounted on the YF2A. The YF2A of this example is equipped with a tension sensor 4, a tension adjusting device 5, an optical radio transmitter / receiver 6, and a position measuring device 7 as electrical equipment. As control units for these electrical devices, a tension control unit that controls the tension adjusting device 5 based on information from the tension sensor 4, and a communication control unit of the optical wireless transmitter / receiver 6 that transmits measurement information of the position measuring device 7. And so on. Each control unit provided in these YF2A is linked and controlled by an integrated control unit provided in the computer 10 of the flat knitting machine 1.

The tension sensor 4 acquires a physical quantity that correlates with the tension of the knitting yarn 9, and outputs the physical quantity as an electric signal to the control circuit 20. The physical quantity to be acquired is not particularly limited as long as it is a physical quantity that changes in correlation with a change in the tension of the knitting yarn 9. The tension sensor 4 of this example comes into contact with the knitting yarn 9 and acquires a physical quantity corresponding to the stress received from the knitting yarn 9. More specifically, in the tension sensor 4 of this example, the guide shaft is cantilevered at a position between the guide rollers 41 and 42 provided in the lower mounting portion 2L of the YF2A and the guide rollers 41 and 42. It is composed of a part 40 and. The tension of the knitting yarn 9 passing between the guide rollers 41 and 42 is measured by the guide shaft portion 40. The guide shaft portion 40 is configured to be displaceable in the left-right direction of the paper surface, and the amount of strain corresponding to the amount of displacement is acquired as the physical quantity. If the tension of the knitting yarn 9 acting on the guide shaft portion 40 is high, the displacement amount of the guide shaft portion 40 becomes large, and the amount of strain to be detected also becomes large. If the tension of the knitting yarn 9 acting on the guide shaft portion 40 is low, the displacement amount of the guide shaft portion 40 becomes small, and the amount of strain to be detected also becomes small. By providing the tension sensor 4 in the YF2A, the slack and tension of the knitting yarn 9 can be grasped more quickly than before.

The physical quantity acquired by the tension sensor 4 is input to the control circuit 20 as an electric signal. The tension control unit of the control circuit 20 refers to a look-up table showing the correlation between the physical quantity and the tension of the knitting yarn 9, and obtains the tension of the knitting yarn 9. The control circuit 20 compares the obtained tension of the knitting yarn 9 with a predetermined set tension, and controls the tension adjusting device 5 so that the tension of the knitting yarn 9 approaches the set tension.

As shown in FIG. 3, the tension adjusting device 5 acts on a portion of the knitting yarn 9 between the introduction guide 21 and the tension sensor 4 to adjust the tension of the knitting yarn 9. The conventional tension adjusting device 5 is provided at the position of the side tension of the flat knitting machine 1 in FIG. 1, but a method of adjusting the knitting yarn 9 at a position close to the tooth opening as in the tension adjusting device 5 of this example. However, it is preferable because the tension of the knitting yarn 9 can be adjusted quickly.

The tension adjusting device 5 of this example sandwiches the knitting yarn 9 between an immovable fixed piece fixed to the lower mounting portion 2L and a movable piece that moves linearly in the direction of approaching and separating from the fixed piece. , Adjust the tension of the knitting yarn 9. The movable piece can be configured to operate by a solenoid or the like, and by changing the amount of energization to the solenoid, the force for sandwiching the knitting yarn 9 between the fixed piece and the movable piece can be changed. If the force for sandwiching the knitting yarn 9 is strong, the knitting yarn 9 becomes difficult to move, and the tension of the knitting yarn 9 on the downstream side of the tension adjusting device 5 becomes high. On the contrary, if the force for sandwiching the knitting yarn 9 is weak, the knitting yarn 9 becomes easy to move, and the tension of the knitting yarn 9 on the downstream side of the tension adjusting device 5 becomes lower.

The optical radio transmitter / receiver 6 includes an optical radio system YF side receiver 6r and a YF side transmitter 6t, and a communication control unit for controlling these. The optical wireless system of this example uses infrared rays, but it may also use visible light. The members 6r and 6t of this example are mounted on the control circuit 20, and the IC chip of the control circuit 20 is used for the communication control unit. In the flat knitting machine 1 of this example, the optical wireless transceiver 6 is used to exchange information between the computer 10 of the flat knitting machine 1 and the YF2A. An example of an optical radio system for exchanging this information will be described with reference to FIG.

In the example shown in FIG. 5, two YF2A and 2B are mounted on one rail 1R. The optical radio system of this example includes a main body side transmitter 1t and a main body side receiver 1r connected to the computer 10 of the flat knitting machine 1, and an optical radio transmitter / receiver 6 provided in each YF2A, 2B. The main body side transmitter 1t is a device that transmits information related to organization from the computer 10 to YF2A and 2B by an optical radio system, and is arranged on one end side of the rail 1R (for example, frame 1FL in FIG. 1). The optical axis of the main body side transmitter 1t faces the YF side receiver 6r of the YF2A near the main body side transmitter 1t. On the other hand, the receiver 1r on the main body side is a device that receives information transmitted from the YF2B by an optical radio system, and is arranged on the other end side of the rail 1R (for example, the frame 1FR in FIG. 1). The light receiving shaft of the main body side receiver 1r faces the YF side transmitter 6t of the YF2B near the main body side receiver 1r. Further, the optical axis of the YF side transmitter 6t of the YF2A faces the YF side receiver 6r of the YF2B.

According to the optical wireless system having the above configuration, as shown by the white arrow, each YF2A and 2B can be relayed from the main body side transmitter 1t to the main body side receiver 1r to perform optical wireless communication. Information including individual commands for each YF2A and 2B is transmitted from the transmitter 1t on the main body side. The control circuit 20 of YF2A, which first receives the information, extracts a command to itself and puts the command into practice. Further, the control circuit 20 of the YF2A transmits information obtained by adding the information acquired by itself (for example, information on the tension of the knitting yarn, position information, etc.) to the information received from the transmitter 1t on the main body side to the next YF2B. do. Like YF2A, YF2B also extracts commands to itself, executes the extracted commands, and transmits information (including information acquired by YF2B) to the receiver 1r on the main body side. The information acquired by each YF2A and 2B is fed back to the computer 10 and used for optimizing the knitting conditions and the like. The procedure for using and transmitting the information described above is the same even if the number of YFs is three or more.

The position measuring device 7 shown in FIG. 3 measures the position of YF2A on the rail 1R. For example, examples of the position measuring device 7 include an optical device provided on the rail 1R that optically reads the scale, and a Hall element provided along the rail 1R that detects a linear scale. The position of YF2A is transmitted to the computer 10 of the flat knitting machine 1 via the optical radio transceiver 6 (FIGS. 2 and 5). The computer 10 realizes the optimum movement of YF2A based on the position information of YF2A. For example, if the YF2A is equipped with a brake mechanism or the like, the stop position of the YF2A can be controlled with high accuracy based on the position information. Further, based on the position information of the YF2A, it is possible to control such that some electric device is operated when the YF2A comes to a predetermined position.

Other examples of the electrical equipment mounted on the YF2A include a camera and a drive mechanism for self-propelling the YF2A. Since a presser device is placed near the tooth opening in addition to the YF2A, it is difficult to check the details near the tooth opening, but if a camera is mounted on the YF2A, it is easy to check the details near the tooth opening. Can be done. Further, if the YF2A is provided with a drive mechanism for self-propelling, the selector 1S in FIG. 1 can be omitted.

<Modification example>
In the first embodiment, the primary coil 31 is fixed to the flat knitting machine 1 by holding the primary coil 31 with the holding member 33. On the other hand, a straightening member other than the holding member 33 can also be used, for example, the core 31c of FIG. 4 is arranged in a tube and straightened, and the primary coil 31 is straightened from the inside with the tube. Can be mentioned. In addition, both ends of the primary coil 31 may be mechanically connected to the frames 1FL and 1FR of the flat knitting machine 1 in a state where tensile tension is applied to the primary coil 31. According to this configuration, the straightening member can be omitted. In this case, the wire diameter of the windings constituting the primary coil 31 is increased to some extent (for example, 1 mm or more) so that the shape of the primary coil 31 is maintained. Of course, the primary coil 31 may be mechanically connected to the flat knitting machine 1 without using the holding member 33 or applying tensile tension to the primary coil 31.

In the first embodiment, the example in which the non-contact power feeding mechanism 3 is applied to YF2A has been described, but the non-contact power feeding mechanism 3 can also be applied to a moving body other than YF2A. For example, the non-contact power feeding mechanism 3 may be applied to a gripper that grips the knitting yarn 9 extending from the knitting needle of the needle bed 1B to the YF2A, a knitting yarn cutting device that cuts the knitting yarn 9 between the gripper and the knitting needle, and the like. ..

1 Flat knitting machine 1B Needle bed 1C Carriage 1FL, 1FR Frame 1R Rail 1S Selector 1b Lump 1r Main body side receiver 1t Main body side transmitter 10 Computer 2,2A, 2B, 2C, 2D Yarn feeder (mobile body)
2M Main body 2a Carrier 2b Hanging 2f Thread feeder 2h Pin groove 2r Traveling roller 2J Connecting part j1, j2, j3 Vertical piece j4, j5 Horizontal piece 2L Lower mounting part 2U Upper mounting part 20 Control circuit (control part) 21 Introduced Guide 24 Movable support mechanism 24a Arm part 24b Support shaft 24h Housing 24s Elastic body 3 Non-contact power supply mechanism 3A First assembly 3B Second assembly 31 Primary coil 31c Core 32 Secondary coil 32a, 32b Split coil 33 Holding member (correction) Member) 34 Cylindrical member 4 Tension sensor (electrical equipment)
40 Guide shaft 41, 42 Guide roller 5 Tension adjuster (electrical equipment)
6 Optical wireless transceiver (electrical equipment)
6r YF side receiver 6t YF side transmitter 7 Position measuring device (electrical equipment)
9 Knitting yarn 90 Heavenly spring device

Claims (9)

In a flat knitting machine equipped with a needle bed in which a plurality of knitting needles are lined up and a moving body that is involved in knitting the knitted fabric by running along a rail.
A primary coil that has an axis parallel to the rail axis and is connected to the power supply of the flat knitting machine.
A cylindrical member provided on the moving body and through which the primary coil is inserted, and
A secondary coil that is wound around the outer circumference of the tubular member and is powered by electromagnetic induction from the primary coil.
A control circuit provided on the moving body and connected to the secondary coil,
At least one electric device provided on the moving body and controlled by the control circuit, and
A flat knitting machine comprising a movable support mechanism for supporting the cylindrical member so as to be displaceable at least in the vertical direction with respect to the moving body . The flat knitting machine according to claim 1, wherein the moving body is a yarn feeder that feeds knitting yarn to the knitting needle. The flat knitting machine according to claim 1 or 2, wherein the primary coil is arranged in an empty space on the lower side of the rail. The flat knitting machine according to any one of claims 1 to 3, further comprising a straightening means for straightening the axis of the primary coil so as to be parallel to the rail. It is provided with a series of holding members that hold the primary coil and are connected to the immovable member of the flat knitting machine.
The flat knitting machine according to claim 4, wherein the primary coil is corrected by the holding member. The fourth aspect of claim 4, wherein the primary coil is straightened by mechanically connecting both ends of the primary coil to an immovable member of a flat knitting machine in a state where tensile tension is applied to the primary coil. Flat knitting machine. The flat knitting machine according to any one of claims 1 to 6 , wherein the secondary coil is formed by connecting a plurality of split coils separated in the extending direction of the primary coil in series. The moving body is a yarn feeder that feeds the knitting yarn to the knitting needle.
The flat knitting machine according to any one of claims 1 to 7 , wherein the electric device is a tension sensor for measuring the tension of the knitting yarn. A plurality of the moving bodies are arranged on the rail,
The electric device is an optical wireless transceiver, and is
The flat knitting machine according to any one of claims 1 to 8 , wherein the mobile body is relayed from one end side to the other end side of the rail to perform optical wireless communication.

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