JP3845142B2 - Flat knitting machine equipped with yarn path pipe changer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a flat knitting machine including a yarn path pipe changing device that uses a magnetic force to change a yarn path pipe used for supplying a knitting yarn.
[0002]
[Prior art]
In a flat knitting machine, a rail is stretched over the needle bed in the longitudinal direction of the needle bed, a member called a carrier is slidably mounted on the rail, and the carrier is slid back and forth in the longitudinal direction of the needle bed by driving means. As a result, the knitting yarn is supplied to the knitting needle from the yarn feeder held integrally with the carrier to perform knitting. In such a knitting machine that knitting by supplying knitting yarn with a carrier provided on a rail provided above the needle bed, the number of rails that can be installed is limited due to space problems, and inevitably used. There was a problem that the number of possible color yarns was limited.
[0003]
In order to solve the above-mentioned problem, Japanese Patent Laid-Open No. 3-174060 discloses a yarn path that is formed of a pair of elastic members, and a thread path pipe that is formed in a cylindrical shape and is formed in a substantially conical shape toward the tip at a lower portion thereof. A yarn path pipe storage base in which extraction rod guide holes are formed between the yarn path pipe fixtures to be held by the pipe fixture and to guide extraction rods for extracting the yarn path pipe to the transport position; The yarn channel extraction means and the yarn channel conveyance device that are arranged opposite to each other across the channel storage table are configured to be movable in the needle bed longitudinal direction by a motor. The yarn path pipe extracting means includes a cam plate rotated by a motor and a crank pin eccentrically fixed to the cam plate in the extraction rod guide hole of the yarn path pipe storage table holding the selected yarn path pipe. The extraction pin is advanced by the extraction pin driving means composed of the crank pin by the crank pin, and the yarn path pipe is pushed out from the thread path pipe fixture, and the thread path pipe provided on the thread path transport means is moved from both sides to a pair of jaws. By pushing it into the thread guide guide groove of the thread guide holder that is clamped by the thread guide, it is possible to move any thread guide from the thread guide fixture to the yarn guide transporting device. As a result, a large number of yarn path pipes can be used for knitting, and the number of colored yarns that can be used for knitting increases dramatically.
[0004]
[Problems to be solved by the invention]
In the yarn automatic feeding device disclosed in the above-mentioned Japanese Patent Laid-Open No. 3-174060, the support of the yarn path pipe used for knitting and the delivery of the yarn path pipe between the yarn path pipe storage table and the yarn path pipe conveying device are extracted. This is performed by a mechanical guide support mechanism such as a yarn path pipe extracting means composed of a rod and an extraction rod driving means. Therefore, a mechanism for delivering the yarn path pipe between the yarn path storage table and the yarn path transport device becomes complicated, and an increase in the size of the flat knitting machine itself and an increase in manufacturing cost cannot be avoided.
An object of this invention is to disclose the flat knitting machine provided with the yarn path pipe exchange apparatus which can simplify the mechanism for delivery of a thread path pipe.
[0005]
[Means for Solving the Problems]
In the yarn path pipe exchanging device of the present invention, the yarn path pipe storage means capable of holding a plurality of yarn path pipes and the yarn path pipe storage means are arranged in the front-rear direction of the yarn path pipe storage means, and the yarn path between the yarn path pipe storage means In the flat knitting machine provided with the yarn path pipe conveying means for delivering the knitting yarn to the knitting needle on the needle bed by transferring the path pipe and holding the yarn path pipe in the longitudinal direction of the needle bed, The permanent magnet is attached to the attracting surface with the opposite sides facing the yarn path storage means and the thread path transport means, and an electromagnet repelling or attracting the permanent magnet is connected to the thread path storage means and the thread path tube. A magnetic field that is provided on both of the conveying means and generates a magnetic field that repels the permanent magnet of the thread guide pipe in the electromagnet on the side passing the thread guide pipe, and attracts the permanent magnet of the thread guide pipe to the electromagnet on the side that receives the thread guide pipe Control means for generating the yarn, and the yarn path pipe is generated by the control means Go back and forth direction by the magnetic field was set to be passed to and from the thread pipe holding means and thread pipe storage means.
[0006]
Preferably, the thread guide is provided as part of the carriage. In this way, the yarn path pipe moves on the needle bed as the carriage travels, and supplies the knitting yarn to the knitting needle.
[0007]
Preferably, drive means for reciprocating the yarn path storage means along the moving direction of the thread path transport means over the entire length of the needle bed is provided. In this way, the yarn path storage means is moved in advance to a position where the thread path pipe is transferred, thereby eliminating unnecessary movement of the thread path transport means.
[0008]
Preferably, the drive means for causing the yarn path pipe storage means to travel in the same direction as the yarn path pipe transport means so that the relative speed difference between the yarn path pipe storage means and the yarn path pipe transport means becomes small when the yarn path pipe is replaced. Is provided. In this way, the yarn path pipe is delivered while moving the yarn path pipe storage means in the same direction as the movement direction of the yarn path pipe transport means when delivering the yarn path pipe.
[0009]
Preferably, a plurality of permanent magnets are attached to the attracting surface of the yarn path tube, and magnetic poles corresponding to the permanent magnets are provided in the electromagnets of the yarn path tube storage means and the yarn path tube transport means. In this way, even if a slight deviation occurs, a force for correcting the deviation is generated, and the magnetic poles are attracted in a state where they correspond accurately.
[0010]
Preferably, a positioning means is provided between the yarn path storage means and the thread path transport means and the thread path. By doing so, it is possible to prevent the yarn path tube from shaking when the knitting yarn is supplied from the yarn path tube.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a flat knitting machine provided with a yarn path changer will be described in detail with reference to the drawings. FIG. 1 is a front view of a flat knitting machine 1 equipped with the yarn path changer of the present invention, FIG. 2 is a view of the flat knitting machine 1 of FIG. 1 viewed from the left side, and FIG. 3 is a partially enlarged view of FIG. FIG. 4 is a block diagram showing the configuration of the thread guide tube exchanging device. A knitting needle (not shown) is slidably mounted in the needle groove 4 formed on the upper surfaces of the front bed 2 and the rear bed 3 that are arranged opposite to each other in the flat knitting machine 1. The knitting needles are advanced and retracted by the needle operation cams of the front carriage 5 and the rear carriage 6 which are reciprocated in the needle bed longitudinal direction. The front and rear carriages 5 and 6 are configured to be able to run synchronously by a drive mechanism (not shown). The flat knitting machine 1 is provided with a known position detection device comprising a needle selection gauge 8 provided along the guide rail 7 and a position sensor 9 provided on the carriage, and the position obtained from the position detection device. Based on the data, the carriages 5 and 6 are moved and the yarn path tube 10 described later is exchanged. A cone stand 12 is placed on a thread stand 11 provided above the needle bed, and a yarn cone 13 is placed on the cone stand 12. The knitting yarn 14 unwound from the yarn cone 13 is guided to the yarn path pipe 10 via a yarn guide 15 and a tension device 16 provided further above the yarn stand 11, and from the tip of the yarn path pipe 10 to the knitting needle. The knitting yarn 14 is supplied and knitting is performed.
[0012]
Next, the thread guide tube changing device will be described. The yarn path pipe exchanging device includes a yarn path pipe 10 that supplies the knitting yarn 14 to the knitting needle, a thread path pipe storage table 17 for holding the yarn path pipe 10 that is not in use, and a yarn path pipe storage table 17. The yarn path tube 10 is transferred between the needle path 10 and the thread path tube transporting device 18 that holds the thread path tube 10 and moves it on the mouth between the front and back needle beds, and the movement of the thread path tube transport device 18 and the thread path It comprises a control device 19 that controls the energization of electromagnets provided in both the pipe transport device 18 and the yarn path pipe storage base 17.
[0013]
In the flat knitting machine of the present embodiment, the yarn path pipe 10 is delivered using the magnetic force between the yarn path pipe storage stand 17 and the yarn path pipe transport device 18 and is held by the yarn path pipe storage stand 17. An arbitrary thread guide pipe 10 is moved to the yarn guide pipe transporting device 18 from the plurality of thread guide pipes 10, and the yarn guide pipe transporting device 18 that holds the yarn guide pipe 10 moves the carriages 5 and 6. As a result, the yarn path tube 10 reciprocates on the mouth of the front and back needle beds to supply the knitting yarn 14 to the knitting needle. Then, after the knitting by the yarn path pipe 10 moved to the yarn path pipe transporting device 18 is completed, the yarn path pipe 10 is moved back from the thread path pipe transporting device 18 to the thread path pipe storage stand 17, and again another yarn path. The knitting is continued by moving the tube 10 to the yarn path transporting device 18, and thereafter the yarn path pipe 10 is repeatedly transferred and knitted between the yarn path pipe storage stand 17 and the yarn path transporting device 18.
[0014]
The details of each part of the thread guide tube exchanging device will be described with reference to FIGS. 5A to 5C are views seen in the directions of arrows II, II-II, and III-III in FIG. The thread guide storage base 17 is provided at a location near the mouth of the needle bed side, and the thread guide transporting device 18 is provided at a position facing the thread guide storage base 17 at the location near the mouth of the front carriage 5. The thread guide storage 17 and the thread guide transporting device 18 are provided with an electromagnet 20 for delivering the yarn guide 10 in cooperation with a permanent magnet 30 attached to the yarn guide 10 described later. In the present embodiment, an electromagnet 20A is provided in the yarn path transporting device 18, and three electromagnets 20B, 20C, and 20D are provided in the thread path storage base 17 along the moving direction of the carriage. As shown in FIG. 3, the yarn path transporting device 18 is supported and fixed at the tip of a bracket 21 protruding from the front carriage 5, and the knitting yarn insertion port 22 of the thread path 10 is held back and forth while holding the thread path 10. It is provided so that it may be located on the virtual center line W between both needle beds. On the other hand, the yarn path pipe storage table 17 is provided at the tip of the bracket 24 protruding from the base 23 of the knitting machine at a position facing the yarn path pipe transporting device 18 on the front carriage 5.
[0015]
Since the electromagnet 20A of the yarn path transport device 18 and the electromagnets 20B, 20C, and 20D of the thread path storage table 17 have the same structure, the electromagnet 20A will be described below as an example with reference to FIGS. 6A is a sectional view taken on the arrow V-V direction in FIG. 5 B, the arrows VI-VI direction of FIG. 6B FIG. 5B, FIG. 6C is a sectional view taken on the arrow IV-IV direction of FIG. 5A, FIG. 6D is a diagram showing a state excluding the thread pipe 10. FIG 6 B. As shown in FIGS. 5 and 6, the electromagnet 20 </ b> A is formed by winding an exciting coil 26 around an iron core 25 made of, for example, electromagnetic soft iron (SUYP) and switching the energizing direction to the exciting coil 26 by the control device 19. A magnetic field having an arbitrary polarity can be generated at the magnetic pole 27 at one end. The electromagnet 20A is provided with a positioning engagement portion 28 that matches the shape of the yarn path tube 10 as positioning means, and the yarn path tube 10 is accommodated in the engagement 28 portion, so that the yarn path at the time of delivery of the yarn path tube is obtained. The pipe 10 is positioned and the yarn path pipe 10 is prevented from being shaken during knitting.
[0016]
Next, details of the yarn path pipe 10 are shown in FIG. 7A is a front view, FIG. 7B is a side view, FIG. 7C is a top view, and FIG. 7D is a partially enlarged view of a suction surface portion. The yarn path pipe 10 is preferably formed of a non-magnetic material, and is a substantially cylindrical member having a knitting yarn insertion hole 22 formed therein. In the middle part in the height direction, the yarn path pipe storage base 17 and The attracting surfaces 29 are provided on both sides so as to face the magnetic poles 27 of the electromagnets A, B, C, and D of the yarn path transporting device 18. As shown in FIG. 7D, the S pole of the permanent magnet 30 is attached to the attraction surface 29 in a state where it appears on both attraction surfaces 29. By attaching the permanent magnet 30 so that the same S pole appears on both attracting surfaces 29, the yarn path pipe 10 held by the yarn path pipe transporting device 18 is replaced with another thread held by the thread path pipe storage stand 17. When passing through the position facing the path tube 10, the thread path tubes 10 do not suck each other, and the thread path tube 10 does not fall off the thread path tube storage stand 17 by mistake. However, it is not always necessary for the same polarity to appear on both adsorption surfaces 29.
[0017]
In the course of exchanging the thread guide tube 10, the control device 19 controls the movement of the carriages 5 and 6 provided with the yarn guide transport device 18 based on the position data obtained from the position detection device, and the yarn guide transport device. 18 is moved to a position facing the electromagnet of the yarn path pipe storage table 17 for delivering the yarn path pipe 10, and the electromagnets of the yarn path pipe transport device 18 and the yarn path pipe storage table 17 are opposed to each other with the yarn path pipe 10 interposed therebetween. In the position, the electromagnet in the direction in which a magnetic field repelling the permanent magnet 30 attached to the attracting surface 29 of the thread guide tube 10 is generated on the electromagnet on the delivery side of the yarn guide pipe 10 and the electromagnet on the side receiving the thread guide pipe 10 Next, an energization command is issued in a direction in which a magnetic field that attracts the permanent magnet 30 attached to the surface of the attracting 29 of the yarn path tube 10 is generated, and the yarn path tube 10 is transferred.
[0018]
Next, the operation of the above-described embodiment will be described with reference to FIG. When the knitting is started, the carriages 5 and 6 stopped outside the knitting area on the left side of the needle bed indicated by the broken line in FIG. 1 are moved from the control device 20 based on the color yarn data obtained from the knitting program. It is moved in the direction of arrow R according to the command. When the yarn path pipe 10b held by the electromagnet 20B is used for knitting, the thread path pipe transport is performed at a position before the electromagnet 20A of the thread path pipe transport device 18 reaches the position opposite to the electromagnet 20B of the thread path pipe storage stand 17. The electromagnet 20A of the apparatus 18 and the electromagnets 20B, 20C, and 20D of the yarn path pipe storage base 17 are not energized, and the thread path pipes 10b, 10c, and 10d are all electromagnets by the permanent magnet 30 attached to the attracting surface 29. It is in a state of being adsorbed to the iron core 25 of 20B, 20C, 20D. When the carriages 5 and 6 are further moved to the right, and it is recognized from the position data obtained from the position detection device that the electromagnet 20A of the thread guide delivery device 18 has reached a position facing the electromagnet 20B, the thread guide 10b. Is transferred from the yarn path tube storage table 17 to the yarn path tube transport device 18, an energization command is issued from the control device 19 to the electromagnet 20 </ b> A of the yarn path tube transport device 18 and the electromagnet 20 </ b> B of the yarn path tube storage table 17. In order to move the yarn path tube 10b from the electromagnet 20B to the electromagnet 20A, an energization command in a direction in which a magnetic field repelling the thread path tube 10b is generated in the electromagnet 20B that holds the thread path tube 10b and passes the thread path tube 10b. However, an energization command is issued to the electromagnet 20A on the side that receives the yarn path tube 10b in a direction in which a magnetic field that attracts the yarn path tube 10b is generated. That is, the electromagnet 20B energizes in the direction in which the S pole is generated in the magnetic pole 27 with respect to the S pole permanent magnet 30 of the attracting surface 29 of the yarn path tube 10b, and the electromagnet 20A has S of the attracting surface 29 of the thread channel tube 10b. Electricity is applied to the pole permanent magnet 30 in the direction in which the N pole is generated in the magnetic pole 27. As a result, a force in a direction repelling the electromagnet 20B and a force in a direction attracted to the electromagnet 20A act on the yarn path tube 10b, and the yarn path tube 10b exists at a position facing the yarn path tube storage base 17. It is delivered to the yarn path transport device 18 and stored in the positioning engagement portion 28 of the electromagnet 20A. At this time, since the transfer is performed using both the repulsive force and the attractive force between the electromagnet and the permanent magnet, the electromagnet 20 of the yarn path tube storage table 17 and the yarn path tube transport device capable of transferring the yarn path tube 10b. The allowable range of deviation between the 18 electromagnets 20 is wider than in the case of the mechanical guide support mechanism. Therefore, it is possible to replace the yarn path tube 10 in a state where the yarn path transporting device 18 is stopped at a position facing the electromagnet 20B of the thread path storage table 17, and the electromagnet 20A is replaced with the electromagnet 20B. It is also possible to transfer the yarn path pipe 10 without stopping the traveling of the carriages 5 and 6 when passing through the opposing positions.
[0019]
The electromagnet 20A and the electromagnet 20B are de-energized after the movement of the yarn path tube 10b to the yarn path tube transport device 18 is completed, but the permanent magnet 30 on the attracting surface 29 causes the thread path tube 10b to be an iron core of the electromagnet 20A. 25 is held in the state of being adsorbed by 25. As a result, the delivery of the yarn passage tube 10b from the yarn passage tube storage base 17 to the yarn passage conveyance device 18 is completed, and the carriages 5 and 6 are moved on the needle bed, and are held by the yarn passage conveyance device 18. The knitting yarn 14 is supplied to the knitting needle from the tip of the knitting yarn insertion hole 22 of the yarn path tube 10b, and knitting is performed. At this time, the positioning engaging portion 28 formed on the electromagnet 20 prevents the yarn path pipe from being shaken during the traveling of the carriage, the knitting conditions are constant, and a knitted fabric having a uniform texture can be knitted.
[0020]
The above description has been made until the yarn path pipe 10 is moved from the thread path pipe storage base 17 to the yarn path pipe transport device 18 and knitting is performed. However, the knitting in the yarn path pipe 10b is completed, and the yarn path pipe 10b is moved to the yarn path. When returning from the pipe carrier 18 to the thread guide storage 17, the magnetic field repelling the thread guide 10b on the electromagnet 20A of the yarn guide carrier 18 is opposite to the electromagnet of the yarn guide storage 17. Energization is performed in a direction in which a magnetic field for attracting the yarn path tube 10b to 20B is generated, and the yarn path tube 10b is returned to the electromagnet 20B of the yarn path tube storage table 17.
[0021]
<Modification 1>
Next, another embodiment of the flat knitting machine provided with the yarn path pipe changing device will be described. In the embodiment described above, the yarn path pipe storage base 17 is fixed to the side of the needle bed, but in the first modification, as shown in FIG. 8, the thread path is provided on the guide rail 41 provided above the rear bed 40. The pipe storage table 42 is slidably held, and the belt 45 spanned between the pulleys 43 and 44 provided at both ends in the needle bed longitudinal direction and the yarn path pipe storage table 46 are connected by a connecting member 47, and the pulley 44 is By driving by the motor 48, the yarn path tube storage table 42 is configured to be movable over the entire needle bed longitudinal direction along the guide rail 41 provided in the needle bed longitudinal direction. Based on the position data obtained from the position detecting device for detecting the yarn and the knitting data obtained from the knitting program, the yarn path pipe 48 used for the next knitting is moved to the vicinity of the exchange point, and the yarn path pipe is delivered. Thread path storage stand 7 is moved in the same direction as the moving direction of the yarn path pipe conveying device 50 provided on the front carriage 49 or is moved in synchronization with the yarn path pipe conveying apparatus 50, and the yarn path pipe conveying device 50 delivers the yarn path pipe 48. The speed difference between the two when passing through the position opposed to the yarn path pipe storage base 46 is reduced. As a result, the yarn path pipe can be transferred without increasing the deceleration rate of the moving speed of the carriage 50 or without decelerating, and the decrease in knitting efficiency can be suppressed. In addition, it is not necessary to move the carriage to the outside of the knitting area every time the yarn path pipe is replaced, and the knitting can be resumed immediately after replacing the yarn path pipe, so that a decrease in knitting efficiency due to the replacement of the yarn path pipe can be suppressed. .
[0022]
<Modification 2>
In Modification 2, a plurality of combinations of permanent magnets and electromagnet magnetic poles are arranged on the attracting surface at intervals. FIG. 9 shows a case where two sets of combinations of permanent magnets and magnetic poles are arranged, and FIG. 10 shows an example where four sets are arranged. In the example shown in FIG. 9, two permanent magnets 52 and 53 are arranged at two positions on the upper and lower sides of the yarn path pipe 51 so that one of them is an S pole and the other is an N pole. The electromagnet 54 that adsorbs the pipe 51 bends the iron core 55 into a U-shape, and the magnetic poles 56 and 57 at both ends of the bent iron core are respectively located at positions corresponding to the permanent magnets 52 and 53 of the thread guide adsorption surface 58. Provide. 10 (FIG. 10 is a perspective view schematically showing the arrangement of permanent magnets and electromagnets attached to the attracting surface of the thread guide tube), a plurality of the magnets are arranged on the same attracting surface 61 of the thread guide tube. Permanent magnets 62, 63, 64, 65 are attached, and magnetic poles 68, 69, 70, 71 of two electromagnets 66, 67 are provided correspondingly. Generally, when magnetic poles are attracted to each other, the magnetic force centers are attracted in a state of facing each other, and when the magnetic force centers are shifted from each other, a force to move to a state in which the magnetic force centers are attracted to each other is generated. . As the magnetic poles become larger, the portion that becomes the center of the magnetic force inevitably increases, so that even when there is a slight deviation, the magnetic poles are kept adsorbed without generating a force in the direction of correcting the deviation. On the other hand, when the magnetic pole per set becomes small, the central portion of the magnetic force becomes small, and a force for correcting the shift is generated even for a slight shift. Therefore, in order to increase the positional accuracy in the direction in which the yarn path transport device moves when the magnetic poles of the permanent magnet and the electromagnet are attracted, the length in the moving direction of the thread guide transport device may be reduced. In order to increase the position accuracy in the vertical direction of the pipe, the length may be reduced in the vertical direction. Therefore, instead of providing a combination of a pair of permanent magnets and electromagnet magnetic poles, a combination of a plurality of permanent magnets and electromagnet magnetic poles was provided instead of reducing the adsorption location of the permanent magnets and electromagnet magnetic poles per set. The position accuracy increases. The shape and arrangement of the magnetic poles of the permanent magnet and the electromagnet can be determined after taking into consideration various conditions such as the weight of the yarn path pipe, the strength of the magnetic force of the permanent magnet and the electromagnet, the required positional accuracy and the attractive force. desirable.
[0023]
In each of the above-described embodiments, a case has been described in which suction and repulsion are performed by switching the energization direction of the excitation coil using a uniform as the winding method of the excitation coil of the electromagnet. It is also possible to change the polarity of the magnetic poles by switching the exciting coil to be energized instead of the energizing direction to the exciting coil as a bifilar. Further, in the above-described embodiment, the yarn path transport device is configured as a part of the carriage, but the belt is stretched between a pair of pulleys provided at both ends of the carriage movement region, and both end portions of the belt needle bed are provided. Rotation drive is possible by a drive motor attached to a pulley provided on the needle, and a thread guide delivery device is provided on a guide rail provided in the needle bed longitudinal direction above the tooth opening between the front and rear needle beds. Slidably holding the belt, and the belt and the yarn path transport device are fixed by a connecting member, and the knitting is performed by rotating the motor to synchronize the yarn path transport device with the carriage. Is possible.
[0024]
【The invention's effect】
As described above, in the flat knitting machine provided with the yarn path pipe exchanging device of the present invention, a magnetic field repelling one of the permanent magnets of the thread path pipe is generated with the thread path storage means and the yarn path transport means facing each other. The magnetic field is generated, and the other generates a magnetic field that attracts the permanent magnet of the yarn path tube, so that the yarn path tube is transferred using both the repulsive force and the attractive force of the electromagnet and the permanent magnet. Therefore, it is not necessary to provide a mechanism for mechanically guiding and supporting the yarn path pipe between the yarn path storage means and the yarn path transport means, and the structure of the knitting machine can be simplified. Also, by using both the repulsive force and the attractive force of the electromagnet and the permanent magnet to deliver the yarn path pipe, the thread path pipe is displaced as it moves between the thread path pipe transport means and the thread path pipe storage means. Therefore, even when there is a slight difference between the thread guide transport means and the thread guide storage means, the thread guide pipe can be delivered, and the thread guide pipe can be delivered securely. It becomes possible.
[0025]
In addition, when the yarn path conveying means is provided as a part of the carriage, it is not necessary to newly provide a moving means for the yarn path conveying means, and the configuration of the knitting machine can be simplified.
[0026]
In addition, in the case where driving means for reciprocating the thread path storage means along the moving direction of the thread path transport means along the entire length of the needle bed is provided, the thread path storage means is previously transferred to the thread path pipe. By moving it to the position where it is performed, useless movement of the thread guide transport means can be eliminated and efficient thread guide replacement can be performed.
[0027]
Further, a drive means for causing the yarn path pipe storage means to travel in the same direction as the yarn path pipe transport means so that a relative speed difference between the yarn path pipe storage means and the yarn path pipe transport means becomes small when the yarn path pipe is replaced. In this case, the yarn path pipe storage table is moved in the same direction or synchronously with the thread path pipe transport device during delivery to reduce the speed difference, so that the yarn path pipe can be delivered even when the carriage is moving at high speed. It is possible to suppress a decrease in knitting efficiency due to the replacement of the canal.
[0028]
In addition, when a plurality of permanent magnets are attached to the attracting surface of the yarn path pipe and corresponding magnetic poles are provided on the electromagnets of the thread path pipe storage means and the thread path pipe transport means, Even if there is a slight shift between the center of the magnetic pole and the center of the magnetic pole of the electromagnet, a force is generated to move the centers of the magnetic poles to a corresponding state. Changes in knitting conditions due to pipe delivery can be prevented.
[0029]
Further, when a positioning engagement portion is provided between the electromagnet of the yarn path pipe storage means and the yarn path pipe transport means and the yarn path pipe, the yarn path pipe when the knitting yarn is supplied from the yarn path pipe It is possible to knit a knitted fabric with high commercial value in which run-out is prevented, knitting conditions are stable, and the texture is uniform.
[Brief description of the drawings]
FIG. 1 is a partial front view of a flat knitting machine of the present invention.
FIG. 2 is a side view of the flat knitting machine of FIG. 1 as viewed from the left side.
FIG. 3 is a partially enlarged view of FIG. 2;
FIG. 4 is a block diagram showing a configuration of a thread guide tube exchange device.
5A is an arrow II in FIG. 3, FIG. 5B is an arrow II-II in FIG. 3, and FIG. 5C is a view in III-III direction in FIG.
6A is an arrow V-V, Figure 6B in FIG. 5 B is a sectional view taken on the arrow VI-VI direction of FIG. 5B, FIG. 6C saw the arrow IV-IV direction of FIG. 5 A is a cross-sectional view, FIG. 6D is a view excluding the thread pipe from Figure 6B.
7A is a front view of a yarn path pipe, FIG. 7B is a side view, FIG. 7C is a top view, and FIG. 7D is a partially enlarged view of a suction surface portion.
FIG. 8 is a top view of a flat knitting machine according to a first modification of the present invention.
FIG. 9 is a diagram showing a second modification of the present invention.
FIG. 10 is a diagram showing a second modification of the present invention.

Claims (6)

Yarn pipe storage means capable of holding a plurality of yarn path pipes, and arranged in the front-rear direction of the yarn path pipe storage means for transferring the yarn path pipes to and from the yarn path pipe storage means and the yarn path pipe In a flat knitting machine provided with a yarn path pipe transporting means that moves in the longitudinal direction of the needle bed while holding the yarn and supplies the knitting yarn to the knitting needle on the needle bed, the thread path pipe includes a thread path storage means and a yarn path A permanent magnet is attached to the suction surface with both side surfaces facing the tube transporting means as an attracting surface, and an electromagnet that repels or attracts the permanent magnet is provided in both the thread guide storage means and the thread guide transporting means, and the thread guide pipe A control means is provided for generating a magnetic field that repels the permanent magnet of the thread guide tube in the electromagnet on the side of passing the thread, and generating a magnetic field that attracts the permanent magnet of the thread guide tube to the electromagnet on the side of receiving the thread guide The yarn path pipe is moved in the front-rear direction by the magnetic field generated by the control means. Flat knitting machine provided with a thread pipe replacement device, characterized in that passed between the thread pipe holding means and thread pipe storage means and.   The flat knitting machine provided with the yarn path pipe changing device according to claim 1, wherein the yarn path pipe conveying means is provided as a part of the carriage.   The drive means for reciprocating the entire length of the needle bed along the moving direction of the thread guide transporting means is provided. Flat knitting machine equipped with a yarn path pipe changer.   Provided drive means for running the yarn path storage means in the same direction as the thread path transport means so that the relative speed difference between the thread path storage means and the thread path transport means becomes small when the thread path tube is replaced. A flat knitting machine comprising the yarn path pipe changing device according to claim 3.   A plurality of permanent magnets are attached to the attracting surface of the yarn path pipe, and corresponding magnetic poles are provided on the electromagnets of the thread path storage means and the thread path transport means. A flat knitting machine comprising the yarn path pipe changing device according to any one of the above items.   The yarn according to any one of claims 1 to 5, wherein a positioning engagement portion corresponding to a shape of the yarn path pipe is formed on the yarn path pipe storage means and the yarn path pipe transport means. A flat knitting machine equipped with a pipe changer.

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