JPS642691B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is a double-row roving frame in which upper support type flyers are arranged in a staggered manner and are movable and stoppable from one end of the frame to the other end. This invention relates to a roving machine tube changing machine that exchanges full and empty bobbins between the roving frame and the roving frame.

BACKGROUND ART Conventionally, the above-mentioned wagon-type tube changer is disclosed in, for example, Japanese Patent Application Laid-open No. 89642/1983.
This device is a wagon-type tube changing device that is equipped with a tube support mechanism for taking out two full bobbins from a roving frame or supplying two empty bobbins at a time, as well as a tube holding mechanism for transferring bobbins. and a tube conveying mechanism arranged along the roving machine, and this tube conveying mechanism is equipped with several conveying pallets, and this conveying pallet has a tube support interval (front and back spacing) equal to the tube support interval of the tube support mechanism. A plurality of pairs of tube holders are installed at intervals in a staggered manner, and the left and right pitches of the tube holders in the front and rear rows are matched to the bobbin pitches on the spinning machine side. According to this device, the empty bobbins, one each on the front and rear mounted on the transport pallet, are opposed to the full bobbins, one each on the front and rear, on the bobbin rail of the roving frame, and the bobbins are connected to the tube support mechanism. Therefore, two empty bobbins are taken out from the transport pallet and held in the pipe holding mechanism, and then the two full bobbins on the bobbin rail are taken out by the pipe support mechanism, and the transport pallet on which the empty bobbins were mounted is taken out. The full bobbin is mounted on the tube holder, and then the tube support mechanism is moved to supply the empty bobbin deposited in the tube holding mechanism to the position on the bobbin rail of the roving machine from which the full bobbin was taken out. This is the first pipe change operation, and then the main body of the pipe change device is moved by one pitch of the bobbin pitch of the roving frame, and the conveying pallet is moved by the difference between the bobbin pitch of the roving frame and the pitch of the conveying pallet, and the next tube change operation is performed. By changing the pipes one after another, the bobbin pitches of the front and rear rows of the roving frame are converted to bobbin pitches of the spinning frame, which is advantageous for operation.

Problems to be Solved by the Invention In the conventional wagon-type tube changing device, a. The staggered full bobbins on the bobbin rail of the roving frame are taken out as they are, and as the tube changing device moves, the conveying pallet is transferred to the left and right bobbin pitches of the roving frame. Since the tube holders on the conveying pallet are moved by the difference in pitch between the left and right sides and matched with the bobbin pitch of the spinning creel in the front and rear rows of the conveying pallet, only two spindles can be handled in one tube change operation. Therefore, pipe switching efficiency is poor.

b When taking out the bobbin from the bobbin rail, the front and back pitch of the full bobbin is not changed, so the width of the entire tube changing machine becomes wider. Therefore, the arm supporting the tube support mechanism becomes long, and when a full bobbin of two or more spindles is to be handled, the weight may cause problems in terms of strength.

There were problems such as. An object of this invention is to solve these problems.

Means for Solving the Problems Therefore, in the present invention, the main body of the mobile tube changer is provided with a tube change bar that can move back and forth toward the front of the roving machine and can be raised and lowered, and this tube change bar has a tube change bar that can move up and down. a front row tube exchange arm that can face the front row upper support flyer with the main body stopped at a predetermined tube exchange position;
The front row of upper support type flyers is provided with a rear row tube exchange arm that can face the rear row of upper support type flyers adjacent to each other in a staggered manner, and the tube exchange bar is further provided with a rear row tube exchange arm. It is characterized by comprising a left and right distance changing device that can change the mutual distance in the longitudinal direction of the machine, and a front and back distance changing device that can change the mutual distance in the front and back direction of the front and rear tube exchange arms.

According to the above, the main body of the tube changing machine is stopped at a predetermined tube changing position, and the tube changing bar is moved back and forth, up and down, and the front and rear row tube changing arms are used to move full bobbins in the front and rear rows on the bobbin rail in a staggered manner. Take out the bobbin, change the left-right and front-back spacing to match the bobbin arrangement in the subsequent process, and doff.

Embodiment In FIG. 2, reference numeral 1 denotes a roving frame, and top support type flyers 3 are suspended from a top rail 2 in the front and rear rows in a staggered manner. As shown in Fig. 3, the upper support type fryers 3 are arranged in groups of four per staff, and their adjacent pitches are maintained at P1.
Furthermore, the pitch between adjacent flyers in this group is maintained at P2, and the left-right spacing is set at L2.
These flyers 3 are rotated at high speed via a drive shaft and gears provided within the top rail 2. A bobbin rail 4 is arranged below these flyers 3, and bobbin wheels 5a and 5b concentric with the flyer 3 are arranged on the bobbin rail 4, and are rotated at high speed via a drive shaft and gears. The upper parts of the bobbin wheels 5a and 5b protrude from the upper surface of the bobbin rail 4. The bobbin wheels 5a on the front side of the frame of the roving frame 1 constitute a front row of bobbin wheels, and the bobbin wheels 5b on the rear side of the machine frame constitute a rear row of bobbin wheels.

Next, the pipe changer AD shown in FIG. 1 will be explained. In the pipe changer AD, 6 is the main body of the pipe changer, and the bottom plate 7 has running wheels 9, 9 integrated with an axle 8.
are rotatably attached via bearings 10 in pairs at the front and rear in the running direction. A driven sprocket 11 is integrally attached to one axle 8 (on the right side in FIG. 1), and a running motor 12 is fixed to the bottom plate 7.
A chain 14 is suspended between the driving sprocket 13 and the driven sprocket 11.
The respective running wheels 9, 9 are arranged so as to roll on running rails 15, 15 laid on the front floor of the roving frame 1 over the entire longitudinal length of the roving frame 1, as shown in FIG. It is placed on. As shown in FIG. 3, on the floor surface of the running rails 15, 15 on the roving frame 1 side, along the longitudinal direction of the machine frame, there is a space between two staffs P3 (=6
x P1 + 2 x P2) (the vertical plane including these proximal bodies 16 is assumed to be the tube change center CL1, CL2, . . . of the revolving frame 1). On the other hand, the pipe switching machine main body 6 has a fourth pipe switching bar 18a, 18b, which will be described later.
A proximity switch 17 capable of detecting the proximate object 16 is installed in alignment with the center of the pitch of the 5th and 5th front and rear row pipe exchange arms (the vertical plane including this proximity switch 17 is connected to the pipe exchange arm). AD pipe switching center CL
). Then, when the traveling motor 12 is driven, the tube changing machine AD moves along the front surface of the roving frame 1 on the traveling rails 15, 15, and stops at the tube changing position when the proximity body 16 and the proximity switch 17 face each other. It's becoming like that.

Next, 18a and 18b are a pair of front and rear tube change bars attached to the tube change machine main body 6 so as to move back and forth and move up and down with respect to the front surface of the roving frame 1, respectively.
The pipe change bar 18a on the side near the
The tube changing bar 18b on the rear side (the side far from the roving frame 1) is used for inserting an empty bobbin. Each tube change bar 18a,
Since the bar 18b, its longitudinal movement, and lifting mechanism are the same, the following description will be made based on FIG. 4, which shows only the tube changing bar 18a for full bobbin doffing, its longitudinal movement, and lifting mechanism. Cylinder 1 for longitudinal movement of pipe change bar 18a
9 is fixed on an intermediate plate 20 fixed on the bearings 10, 10 of the traveling wheels 9, 9, and the cylinder rod 21 has a rack rod 22 for rotating the right spline shaft (hereinafter, right Rack rod 22
) are connected to each other, and are guided by guide wheels 23, 23 rotatably supported on the upper surface of the intermediate plate 20 so as to move horizontally from side to side. This right rack rod 22 has racks 24 on both ends of the roving machine side.
a, 24b are formed. 25 is a rack lever for rotating the left spline shaft (hereinafter referred to as left rack lever 2).
Rack 26b is provided at the left end of the rack rod 22 on the side surface of the roving frame, and on the right end thereof, a rack 26b is provided on the surface facing the rack 24a at the left end of the right rack rod 22.
26a is formed, and is guided by guide wheels 23, 23 to move horizontally. Opposing racks 24a and 26a of the left and right rack rods 22 and 25 mesh with a pinion gear 27 rotatably supported on a vertical axis on the middle plate 20, so that the pinion gear 27 controls the movement of the right rack rod 22. Through the left rack rod 25
It is arranged to be communicated to. On the other hand, 28a, 28
b denotes left and right spline shafts, the upper and lower ends of which are respectively fixed to the side plates 29, 29 of the pipe changer main body 6;
It is inserted into the lower brackets 30, 30, positioned vertically and rotatably supported. Sector gears 31, 31 are integrally attached to the lower ends of these spline shafts 28a, 28b with keys or the like, and these sector gears 31, 31 are attached to the left, left and right sides, respectively.
Rack 26b, 24b of right rack rod 22, 25
It meshes with. This left and right spline shaft 28
As shown in FIG. 6, boss portions of swing arms 32, 32 are fitted into a and 28b so as to be slidable in the vertical direction. The lower part of this boss part is formed to have a small diameter as shown in FIG. 5, and lifting guide rings 33, 33 are rotatably fitted into this small diameter part. As shown in FIG. 6, the tube change bar 18a has long holes 3 in the longitudinal direction in the left and right parts of the bottom plate 34.
5 and 35 are formed respectively. Also, 36,3
Reference numeral 6 denotes a guide rack rod, which slides on the inner surfaces of the front and rear plates 37, 38 and the bottom plate 34 of the pipe changing bar 18a, respectively, and is rotatably supported on the bottom plate 34 by a vertical shaft, as shown in FIG. guide rollers 39, 39
racks 40, 40 are formed opposite to each other in the central part of the tube change bar 18a, and these racks 4
0 and 40 mesh with a carrier pinion gear 41 rotatably supported on the bottom plate 34. The other ends of these guide rack rods 36, 36 are respectively formed into L-shaped mounting portions 36a, 36a, and are provided with mounting holes 36b, 36b, as shown in FIG.
Sliding pins 42, 42 are rotatably inserted into these mounting holes 36b, 36b, respectively, and these sliding pins 42, 42 are further slidably fitted into the elongated holes 35, 35, respectively. , the swing arm 3
2,32 is fixed at the tip. Next, in Figure 4,
Reference numeral 43 denotes an elevating cylinder that is vertically disposed downward from the top plate 44 of the pipe changer main body 6 on the left side of the left spline shaft 28a;
At the tip a, a sprocket holder 46 is attached which pivotally supports a pair of carrier sprockets 45a and 45b in the vertical direction. 47 is rotatably supported by the pipe changer main body 6 by a tuning shaft for lifting and lowering provided in the left and right direction below the pipe changer main body 6, and drive sprockets 48a, 48b are attached to the left and right ends thereof. are key-linked. Sprockets 49a and 49b are rotatably supported on horizontal shafts attached to the left and right side plates 29 and 29 of the pipe changer main body 6 above the drive sprockets 48a and 48b. The carrier sprocket 45a, 45b, drive sprocket 4
8a and sprocket 49a are mounted so as to be located within the same vertical plane, and drive sprocket 48b and sprocket 49b are also mounted so as to be located within the same vertical plane. 50 is a lifting chain, one end of which connects to the top plate 4 of the pipe changer main body 6.
4, and is wound in this order around the upper sprocket 45a of the sprocket holder 46, the sprocket 49a, the drive sprocket 48a, and the lower sprocket 45b of the sprocket holder 46, and the other end is fixed to the bottom plate 7. Further, a driven chain 51 is wound between the drive sprocket 48b and the sprocket 49b. Sprocket 49
a, 49b and drive sprocket 48a, 48
The left and right lifting guide rings 33,
33 are connected.

Next, a device for changing the left-right spacing of the eight front and rear tube exchange arms attached to the tube exchange bar 18a will be described. As shown in FIG. 9, the tube change bar 18a has a box-like shape with an open top, and the top surface thereof is formed into sliding surfaces 52, 52. On the sliding surfaces 52, 52, a rear row slider 54 and a front row slider 53 are placed alternately from the left side as shown in FIG. Slider holder 5 fixed to plates 37 and 38
5 and 55, the front and rear directions are regulated, allowing for free left and right movement. As shown in FIGS. 10 and 11, screw bodies 56 and 57 are fixed to the adjacent front and rear sliders 53 and 54 so as to face each other on the lower side surfaces thereof. In Figures 10 and 11, this screw body 5
The screw directions of the sliders 6 and 57 are set to be right-handed threads for those attached to the left side of the front and rear sliders 53 and 54, and left-handed threads for those attached to the right side. Adjacent left and right screw bodies 56, 5
7 are connected by a connecting nut 58 except for the pair of threaded bodies 56 and 57 of the fourth and fifth front and rear sliders 53 and 54. Threaded bodies 5 of the fourth and fifth front and rear row sliders 53 and 54
6, 57 are intermediate screw bodies 5 as shown in FIG.
It is screwed into a connecting nut 61 via pins 9 and 60. The outer threads of the intermediate screw bodies 59 and 60 are set to be left-handed and right-handed, respectively, and the connecting nut 61 is regulated in the left-right direction with respect to the pipe change bar 18a and is fixed unrotatably. This part only
The reason why the screw structure is doubled is that the fourth and fifth front and rear row sliders 53, as shown in FIG.
54 to the left and right with respect to the tube change center CL of the tube change machine AD, change their pitches from pitch P2 of the spinning frame 1 to pitch P of the spinning creel based on the fixed connecting nut 61. (or vice versa). Reference numeral 62 denotes a spline shaft extending along the longitudinal direction of the tube change bar 18a, which is rotatably supported by the tube change bar 18a.
57, and the central holes 59a, 60a, 58a of the intermediate screw bodies 59, 60 and the connecting nut 58
is slidably fitted onto this spline shaft 62. As shown in FIG. 7, this spline shaft 6
A drive gear 63 is keyed to one end of 2,
Furthermore, it is connected to an arrangement changing motor 65 via a coupling ring 64. Assuming that the thread pitch of the threaded bodies 56 and 57 is p, this arrangement changing motor 64 is designed to be stopped by an appropriate brake device when it rotates by (P-P1)/(2xp). In this embodiment, pitch P1 of the roving frame 1,
There is a relationship between P2 and the bobbin pitch P of the spinning creel as P2>P>P1. When the spline shaft 62 rotates clockwise when viewed from the motor side, the sliders connected by the connecting nut 58 approach each other, and the pitch becomes P2.
will be changed from P1 to P1. In addition, the sliders 53 and 54, which are connected by a fixed connecting nut 61, have a difference in the amount of movement between the inner thread and the outer thread, which is the amount of slider movement.
In other words, it is equal to P2 - P, so the pitch of the external thread is
If p1 is set, p1 is set from p1×(P-P1)/(2×p)-p×(P-P1)/(2×p)=P2-P, and clockwise rotation of the spline shaft 62 Pitch is changed from P to P2. These pitch changes are reversed by reversing the rotation of the motor.

In FIG. 8, the front row slider 53 is integrally provided with a front row tube exchange arm 66 that can face the front row upper support type flyer (the flyer facing the bobbin wheel 5a) of the roving frame 1. is formed as a two-pronged fork 67 as a tube support, and is adapted to engage with the flange B1 at the top of the bobbin from below. In addition, 68 is a tube exchange arm for the rear row that can face the upper support type flyer (flyer facing the bobbin wheel 5b) in the rear row of the roving frame 1, and a tube support portion is provided at the tips of the two left and right guide rods 69, 69. A two-pronged fork 67 is provided, and guide rods 69, 69 are inserted into the sliding holes 70, 70 of the rear slider 54, respectively, so that the slider 54 can freely slide in the front and rear directions. A rack 71 is carved on the lower side of these guide rods 69, 69 as shown in FIG. These racks 71 are equipped with rear row sliders 54.
A pinion 72 rotatably supported is engaged with the spline shaft 62, and this pinion 72 slides on another rotatable spline shaft 73 disposed along the tube change bar 18a in parallel with the spline shaft 62. The spline shaft 73 is loosely fitted to the front slider 53. As shown in FIG. 7, this spline shaft 73 has a driven gear 74 attached to one end thereof that meshes with the drive gear 63, thereby forming a longitudinal distance changing device.
In this embodiment, the module M of the pinion, the number N of its teeth, the number N1 of teeth of the drive gear 63, the number N2 of teeth of the driven gear 74, the bobbin wheel 5a of the roving frame 1,
The number of teeth etc. are set so that the following relationship is established between the front and rear row spacing L2 of 5b: M×N×π×(N1/N2)×(P-P1)/(2×p)=L2. A change from a state in which the bobbin wheels 5a and 5b on the bobbin rail 4 are arranged in a staggered manner as shown in FIG. 12a to a state in which they are arranged in a single row in accordance with the bobbin arrangement of the spinning creel as shown in FIG. 12b. The operation (or the reverse) is performed synchronously by a single arrangement change motor 65. In addition, in Fig. 4, LS1 and LS2 are the side plates 29 of the pipe changer main body 6.
A rising end upper limit switch is attached to the tube support of the bobbin conveying device, which will be described later, and confirms the vertical movement position of the tube exchange arms 66, 68 when the tube exchange arms 66, 68 exchange bobbins between them. and the rising end lower limit switch, and LS3 and LS4 are the lower end upper limit switches that check the vertical movement position of the tube exchange arms 66 and 68 when the tube exchange arms 66 and 68 perform bobbin exchange between the bobbin rail 4 and the lower limit switch. These limit switches LS1 to LS4 are adapted to engage with the right-hand lifting guide ring 33. Also, LS5,
LS6 is a forward end and backward end limit switch,
It is attached to the middle plate 20, and engages with a convex portion 22a on the back side of the right rack rod 22 to confirm the forward and backward ends of the tube change bar 18a. Further, 75, 75 shown in FIG. 1 are positioning cylinders equipped with positioning pins 76, 76 at the tips that engage with positioning blocks of a bobbin conveying device, which will be described later, and are attached to the left and right side plates 29, 29 of the tube changer main body 6. It is being

Next, the bobbin conveying tool 81 of the bobbin conveying device will be explained. As shown in FIG. 14, a conveyor rail 78 is suspended from a board 77 installed from the ceiling vertically above the bobbin wheel row 5a in the front row of the rover 1, and is formed in a hollow rectangular cross section with a downward opening. has been done. This transport rail 78 includes a bobbin transport tool (hereinafter referred to as a transport tool) 81 for transporting the roving bobbin.
However, it is suspended so that it can run along the conveyance rail 78 by wheels 79 for rolling and wheels 80 for left and right guidance. A plurality of tube supports 83 (six in this embodiment) are hung in a row below the base plate 82 of the conveyor 81 while maintaining the bobbin pitch P of the spinning creel in the longitudinal direction. As shown in FIG. 14, on the upper surface of this board 82, there are three index pins 84 with a distance P4 that is twice the distance between the tube supports 83.
is fixed with its both ends protruding from both sides of the substrate 82. The tube support row is located directly above the front bobbin wheel row. As shown in FIG. 13, such a conveyor 81 is constructed by connecting the front and rear conveyors 81, 81 with pins via a connecting rod 85 so as to maintain the bobbin interval P of the spinning creel. The set of carriers 81 is transported along the transport rail 78 by a suitable transport device. As shown in FIG.
The pipe changing center L1 of the conveyor 81 is set at the center of the fourth and fifth pitches, and the pipe changing centers L2 and L3 are set every eight pitches of the pipe support 83 thereafter.
At the top of this transport rail 78, a large number of sets of transport tools 81, which have been transported by suspending empty bobbins EB, are placed on the transport rail 78 at the first delivery position for empty and full bobbins (tube change center L1 and the roving machine). 1 pipe change center CL1
A stop positioning device 86 is provided to stop the vehicle at a position where the two match. This stop positioning device 8
6, as shown in Utility Model Application Publication No. 60-162548, a generally L-shaped swinging hook 87 is pivotally supported to swing on a horizontal shaft 88, and a first A roller 90 is urged counterclockwise in the figure and is attached to the upper side of the swing hook 87.
is in contact with the cylinder rod of the cylinder 91, and the cylinder rod retreats, causing the swinging hook 87 to swing counterclockwise by the force of the spring 91, and the first index pin 84 is captured and transported by the hook 92 at its tip. The tool 81 is stopped at the delivery position, and thereafter the piston rod is projected to disengage from the index pin 84.

Next, the bobbin carrier transfer device will be explained.
As shown in FIG. 14, a rail 93 having a hollow rectangular cross section is disposed on the base 77 above the roving frame 1 over the entire length in the longitudinal direction. Reference numeral 94 denotes the main body of the transfer device, and wheels 95, 95 which are horizontally supported on the left and right sides are attached to the top plate of the main body of the transfer device.
5 is adapted to move along a rail 93. Support brackets 96, 96 are fixed to the inner surface of the upper plate of the transfer device main body 94, and as shown in FIG. 13, a shaft 97 is rotatably supported by the support brackets 96, 96. There are L on both sides of the support brackets 96, 96 of this shaft 97.
Letter-shaped swinging arms 98, 98 are fitted loosely into each other so as to swing in the front-rear direction (left-right direction in FIG. 14), and a feed drum 100 with a feed cam groove 99 cut into its outer circumferential surface. These swinging arms 9
It is sandwiched between 8 and 98 and rotatably supported at its lower end. In addition, 101 is the swing arm 9
A fixed shaft connects the left and right swing arms 98, 98 at the other ends of the shaft, and is fixed at the longitudinal center position to the tip of a solenoid 102 hanging down from the inner surface of the upper plate of the transfer device main body 94. The notch engaging portion 104 of the connecting arm 103 is fitted into the connecting arm 103. Driven sprockets 106 and 106 are provided at both ends of the support shaft 105 of the feed drum 100, respectively, and driven sprockets 106 and 10 of the shaft 97 are mounted at both ends of the support shaft 105, respectively.
A drive sprocket 107 is located at a position opposite to 6.
107 are wedged together, and both sprockets 106,
A chain 108 is wound between the parts 107.
The drive sprocket 107,1 of the shaft 97
A driven gear 109 and a worm gear 110 are key-coupled to the outside of each of 07, the driven gear 109 meshes with a drive gear 112 of a drive motor 111, and the worm gear 110 is a worm wheel 113 rotatably supported on the inner surface of the upper plate. It meshes with. A cam plate 114 is concentrically and integrally attached to the worm wheel 113, and a limit switch 116 is attached to the upper plate so as to horizontally engage with an engaging piece 115 fixed to the cam plate 114. Reference numeral 117 denotes a solenoid attached to the inside of the front plate of the transfer device main body 94, and a positioning pin 118 is formed at the tip so that the solenoid can move up and down.
On the front side of the rail 93, as shown in FIG. When the positioning pin 118 is located in the upper position facing the pipe changer AD
A positioning tool 120 having a positioning hole 119 that can be engaged with the positioning pin 118 is fixed at a position facing the positioning pin 118 . Further, when the transfer device main body 94 is located at the standby position on both the left and right sides of the transfer device main body 94, and the pipe changer AD is located at the first pipe change position of the machine (FIG. 16a), Connecting pins 76, 7 at the ends of the cylinder rods are placed at opposing positions above the positioning cylinders 75, 75 on both the left and right sides.
Connecting blocks 122, 122 each having connecting holes 121, 121 that can be engaged with the connectors 6 and 6 are fixed thereto. Then, when the transfer device main body 94 and the conveyor 81 are in the standby position and the delivery position, respectively, and the feed drum 100 reaches the engaged position from the retracted state shown by the two-dot chain line in FIG. The rotational position of the feed drum 100 is set so that the cam groove 99 exactly engages with the indexing pin 84 of the conveyor 81, and the worm gear 110 and worm wheel 113 are rotated so that the feed drum 100 is rotated and indexed. When the pin 84 is moved 4×4P by 4 pitches, the worm wheel 113 rotates exactly once, and the limit switch 116 causes the drive motor 11 to move.
1 to issue a stop signal.

Next, the effect will be explained. First, the transfer device main body 94 is positioned and stopped at a preset waiting position on the rail 93, with its positioning pin 118 being engaged with the positioning hole 119 of the positioning tool 120. At this time, the feed drum 100 is in a retracted state by retracting the solenoid 102. On the other hand, the cylinder rod of the cylinder 91 of the stop positioning device 86 on the transport rail 78 is moved backward, and the swinging hook 87 is moved to the index pin 8 by the force of the spring 89.
It is held in a state where it protrudes into the movement path No. 4. In this state, the carrier 81 with the empty bobbin EB suspended thereon is transferred by an appropriate transfer device other than the bobbin carrier transfer device, and the glue limit dog 123 at the tip of the carrier 81 engages with a limit switch (not shown) to In response to a command, the feeding of an appropriate transfer device is stopped immediately before the first delivery position of the carrier 81, and the carrier 81 is moved by inertia until the first index pin 84 engages with the hook 92 at the tip of the swinging hook 87. The tube change center L1 of the conveyor 81 coincides with the tube change center CL1 of the roving frame 1, and the conveyor 81 is stopped at the first delivery position.

Now, when a full tube command is issued from the roving frame 1 with the conveyor 81 in the first delivery position and the transfer device main body 94 in the standby position, the tube changer AD is activated as shown in FIG. 16a. It is attached to the front of the roving frame 1, and the first proximal body 16 and the proximity switch 17 are opposed to each other and stopped at the first pipe change position, and the pipe change machine AD,
The pipe changing center CL of the conveyor 81 and the roving frame 1,
L1 and CL1 match. At this time, the tube change bar 18
The tube exchange arms 66 and 68 of a and 18b are respectively 12th
The one-row arrangement shown in FIG. b corresponds to the eight empty bobbins EB located just at the delivery position. At the same time, the positioning cylinders 75, 75 are projected upward, and the connecting pins 76, 76 at the tips engage with the connecting holes 121, 121 of the connecting blocks 122, 122, respectively, so that the pipe changer main body 6 and the transfer device main body 94 are connected. are integrally coupled and also include a solenoid 102 of the transfer device.
protrudes, swings the swinging arm 98 toward the transport rail 78 via the connecting arm 103, moves the feed drum 100 at the tip from the retracted state to the engaged state, and the feed cam groove 99 moves into the slot of the transport tool 81. It is engaged with the ejection pin 84. Next, at an appropriate timing, the positioning pin 118 of the solenoid 117 of the transfer device main body 94 is moved back to release the positioning state of the transfer device main body 94, and the cylinder rod of the cylinder 91 of the stop positioning device 86 of the transport tool 81 is protruded and shaken. The hook 92 of the moving hook 87 is attached to the spring 8.
9 Rotate clockwise against the force of index pin 8.
4 and the hook 92 to release the positioning of the transport tool 81. Next, the tube changer bar 18a for doffing a full bobbin and the tube changer bar 18b for inserting an empty bobbin begin to operate simultaneously, and doffing and insertion of an empty bobbin are performed at the same time. Let's start with fried eggs. The transfer device main body 94 and the conveyor 81
After releasing the positioning state of
p) Rotation) For the front and rear rows, the connecting nut 58 that rotates clockwise and connects the screw bodies 56 and 57 and the intermediate screw bodies 59 and 60 of the double threaded portion rotates clockwise and is connected by the connecting nut 58. The sliders 53 and 54 slide on the tube change bar 18a and approach each other, so that the mutual pitch changes from P to P1, and the intermediate threaded bodies 59 and 60
Meanwhile, the screw bodies 56 and 57 are screwed in, and the intermediate screw bodies 59 and 6 are screwed into the fixed connecting nut 61.
0 is loosened, and the front and rear sliders 53 and 54 connected by the connecting nut 61 are moved to the left and right by an equal distance with respect to the pipe changing center CL of the pipe changing machine AD, and the pitch is changed from P to P2. Ru. While changing the left and right spacing between the front and rear tube exchange arms 66 and 68, the drive gear 63 and driven gear 74 are
The spline shaft 73 is rotated through the pinion 72 of the rear slider 54 and the rear tube exchange arm 68.
The rear row tube exchange arm 68 is inserted through the racks 71, 71.
Move forward by pitch L2 from a single line state. In this way, when the pipe switching bar 18a is at the lowering end position and at the retreating end (hereinafter, this state is referred to as the original position),
The arrangement of the bobbin wheels 5a and 5b of the roving frame 1 has been changed from the one-row arrangement shown in FIG. 12b to the staggered arrangement shown in FIG. . Next, at an appropriate timing, the cylinder rod 21 of the front and rear movement cylinders 19 is moved to the left, and this movement is controlled by the left and right rack rods 2.
2, 25, pinion 27, left and right sector gear 3
1 and 31, the left and right spline shafts 28a,
28b, the left and right swing arms 32,
32 to the roving frame 1 side. When the swing arms 32, 32 swing, the sliding pin 4 at the tip of each
2, 42 are the left and right elongated holes 35, 3 of the tube change bar 18a.
5 to move the guide rack rods 36 and 36 to the left and right, respectively. Since the guide rack rods 36 and 36 are engaged with the carrier pinion gear 41, respectively,
The tube change bar 18a moves forward straight without shifting to the left or right, and the forks 67 of the front and rear row tube change arms 66, 68 face each other on the bobbin rail 4 in a staggered manner for the first two studs (8 spindles). Enter the lower part of the flange B1 at the top of the full bobbin FB in the front and rear rows. When the convex portion 22a of the right rack lever 22 detects the forward end limit switch LS5, the forward and backward movement cylinder 19
stops, and the tube changing bar 18a stops at the forward end (Fig. 15c). Next, the cylinder rod 43a of the lifting cylinder 43 descends slightly, and the lifting chain 50 connected to the left lifting guide ring 33 rises, and is also connected to the right lifting guide ring 33 via the synchronizing shaft 47. The connected portion of the driven chain 51 rises slightly, and the left and right swing arms 32, 32 move toward the spline shafts 28a, 28, respectively.
b, the tube changing bar 18a is raised, and the flange B1 of the full bobbin FB engages with each fork 67 of the front and rear row tube changing arms 66, 68, and the full bobbin FB is removed. pull it upwards. Move the right lifting guide ring 33 to the lowering end upper limit switch LS3.
When detected, the lifting cylinder 43 stops and the tube change bar 18a stops at the upper position of the lowering end (FIG. 15d). Next, the cylinder rod 21 of the longitudinal movement cylinder 19 moves to the right and rotates the left and right spline shafts 28a, 28b in the opposite direction to the above-mentioned direction, thereby opening the tube change bar 18.
A is moved backward with the full bobbin FB suspended from the front and rear row tube exchange arms 66 and 68, respectively. Push the protrusion 22a of the right rack lever 22 to the rear end limit switch.
When the LS6 detects this, the tube change bar 18a stops at the backward end (Fig. 15e). Next, the arrangement changing motor 65 rotates in the opposite direction to rotate the spline shaft 62 to the left when viewed from the motor side, and at the same time, the spline shaft 73 is also rotated to operate the longitudinal and lateral spacing changing devices in the reverse direction. From the staggered arrangement shown in Figure a to the single-row arrangement shown in Figure 12b (the first
Figure 5 f). Next, at an appropriate timing, the cylinder rod 43a of the lifting cylinder 43 is greatly lowered, and when the right lifting guide ring 3 is detected by the lower limit switch LS2, the lifting cylinder 43 is stopped and the pipe change bar 18a is moved to the lower lifting end position. (Fig. 15g). The cylinder rod 21 of the longitudinal movement cylinder 19 moves to the left and the tube change bar 18a moves forward, and when the protrusion 22a of the right rack rod 22 and the forward end limit switch LS5 detect it, the tube change bar 18a stops at the forward end and moves in a line. Eight full bobbins FB suspended in an array are connected to eight tube supports 83 of a row of conveyance tools 81 from which empty bobbins EB, which will be described later, have been removed.
and are located directly below each other (Fig. 15h).
Next, the cylinder rod 43 of the lifting cylinder 43
a is slightly lowered and the tube change bar 18a is raised,
A full bobbin FB is inserted into each tube support 83,
When the right lifting guide ring 33 is detected by the lower limit switch LS1, the lifting cylinder 43 is stopped and the tube change bar 18a is stopped at the upper lifting end position (FIG. 15i). Next, the cylinder rod 43a of the lifting cylinder 43 rises slightly and moves to the pipe changing bar 18a.
is slightly lowered, and the lower limit switch LS2 at the upper end
detects the right lifting guide ring 33, the tube changing bar 18a stops at the lower position of the rising end, the full bobbin FB is suspended by the tube support 83, and the front and rear row tube changing arms 6 are moved.
The upper surface of the fork 67 of 6 and 68 is separated from the lower surface of the flange B1 at the top of the full bobbin FB (FIG. 15 j). Next, the cylinder rod 21 of the longitudinal movement cylinder 19
moves forward, the tube change bar 18a retreats, and the backward end limit switch LS6 moves to the convex portion 2 of the right rack rod 22.
2a is detected, the tube change bar 18a stops at the backward end and remains on standby (Fig. 15 k, l). The above is the full bobbin doffing operation.

Next, the empty bobbin insertion operation that is performed in parallel with this full bobbin doffing operation will be explained.
The left and right, front and back spacing changing devices, etc. have exactly the same configuration as those for full bobbin doffing, so below we will focus on the arrangement and up and down positions of the tube exchange arms 66 and 68 for the front and rear rows of the tube exchange bar 18b. and explain. The front and rear row tube exchange arms 66 and 68 in the single row state move from the retreating end (indicating the original position, FIG. 15a) to the forward end at the lower position of the rising end (FIG. 15b). Next, it rises slightly at the forward end, stops at the upper position of the rising end, lifts up the empty bobbin EB (Fig. 15c), and descends slightly to transfer eight bobbins from the row of tube supports 84 to the fork 67 at the delivery position. Suspend the empty bobbin EB (No. 18)
Figure d). Next, they move backwards in a single file, wait at the backward end (Fig. 15 e, f), descend greatly, stop at the upper position of the descending end, and operate the left/right and front/rear spacing changing devices to adjust the front and rear row pipes. The arrangement state of the replacement arms 66, 68 is changed from a single row arrangement to a staggered arrangement (Fig. 15g, h), and corresponds to the staggered bobbin wheels 5a, 5b after the full bobbin FB has been extracted by moving forward. and stop slightly above it (Fig. 15i), descend slightly and stop at the bottom position of the lowering end, insert the empty bobbin EB into the bobbin wheels 5a and 5b, and
(J), the tube is retracted to the retracted end and the arrangement of the front and rear tube exchange arms 66, 68 is changed from a staggered arrangement to a single row arrangement (Fig. 15K, L).

When the pipe changing operation is thus completed at the first pipe changing position, the drive motor 12 of the pipe changing machine AD is driven at an appropriate timing, and the traveling wheels 9, 9 are rotated via the sprockets 11, 13 and the chain 14. Then, the tube changer AD runs along the roving frame 1 together with the transfer device main body 94, and when the proximity switch 17 detects the next proximal body 16 arranged at pitch P3, the drive motor 12 is stopped and the tube changer AD moves along the roving frame 1. The AD stops at the second tube change position (Figure 16b and Figure 1).
During this traveling, the tube change bars 18a and 18b each return to their original positions, and the drive motor 111 of the transfer device main body 94 is driven to rotate the cam plate 114 once and the limit switch 116 detects the engagement piece 115. The feed drum 100 is rotated until it is engaged with the index pin 84, and the conveying tool 81 is moved by 4×P4 in the direction opposite to the moving direction of the pipe changer AD. Therefore, the conveyance tool 81 is used for each pipe change operation (4×P4
−P3) relative to the rover 1. In this way, as shown in FIG. 16b, the next eight empty bobbins EB suspended from the carrier 81 stop at the second delivery position, and the roving frame 1, tube changer AD, and carrier 81
The respective pipe switching centers CL2, CL, and L2 match, and the second pipe switching operation is executed. After repeating these operations and completing the final tube change operation (FIG. 16c) at the end of the roving frame 1, the solenoid 102 of the transfer device main body 94 moves back at an appropriate timing, causing the swing arms 98, 98 to swing. Then, the cam groove 99 of the feed drum 100 at the tip and the index pin 84 of the conveyor 81 are disengaged, and then the drive motor 12 of the pipe changer AD is reversed and moved to the left for the first time. The main body 94 of the transfer device protrudes its positioning pin 118 and enters the positioning hole 119.
is inserted into the standby position. Next, the positioning pins 76, 76 of the positioning cylinders 75, 75 of the pipe changer main body 6 are removed from the positioning blocks 122, 122 of the transfer device main body 94, and the pipe changer main body 6 issues the next full pipe command. Move to Rover 1.

In this embodiment, the tube change bar 1 for full bobbin doffing is
As shown in FIG. 3, between the two left and right guide rods 69, 69 of the rear tube exchange arm 68 attached to the rear tube exchange arm 68 attached to the tube exchange bar 18b for empty bobbin insertion. Since the fork 67 is made to pass through, the distance in the front-rear direction of each tube change bar 18a, 18b can be reduced. In addition, in this embodiment, the front and rear and left and right spacing of the front and rear tube exchange arms 66 and 68 are changed synchronously by a single arrangement change motor 65, making the control simple and highly reliable. , can be realized at low cost.

Second Embodiment In FIGS. 17 to 19, a bobbin conveying device in which a peg conveyor 201 circulating around the roving frame 1 is installed on the floor as shown in FIG. 18 will be described. Identical or equivalent parts are given the same numbers and explanations are omitted. The peg conveyor 201 carries pegs 204 in a row on a peg plate 203 sliding on a receiving plate 202.
Moreover, the adjacent spacing is made to match the bobbin spacing P of the spinning creel.

Pezug plate 203 is conveyor chain 20
5, and this conveyor chain 205 is driven by an appropriate drive source. A full bobbin processing device 206 is disposed at one end of the back of the roving frame 1, and is used to supply empty bobbins EB to the peg conveyor 201, to take out full bobbins FB from the peg conveyor 201, and to use a conveying device connected to a spinning creel (not shown). It is designed to attach a full bobbin FB. As shown in FIG. 17, a swing arm 32 is fitted to the left and right spline shafts 28a, 28b of the main body 6 of the pipe changer so as to be slidable in the vertical direction.
32 has a tube change bar 18a similar to the above on its lower side,
18b is attached, and the respective tube change bars 18a, 1
8b is the same front and rear row tube exchange arms 66, 68 as described above.
It is also equipped with a device for changing the left/right and front/back spacing.
On a guide rail 207 fixed to the front surface of the flyer rail 2 of the roving frame 1, a guide roller 208 is mounted which is rotatably supported on the top of the tube changer 1.

According to such a device, before the roving frame 1 becomes full, empty bobbins EB are supplied onto the peg conveyor 201 from the empty bobbin processing device 206, and the empty bobbins EB are placed on standby on the back side of the roving frame 1. I'll let you.
The tube changer moves to the first tube change position when the Rover 1 is given a full tube change command.
The AD stops, the peg conveyor 201 also moves, and the first eight peg conveyors stop at the delivery position in the same positional relationship as in the first embodiment. The tube changing bar 18a for full bobbin doffing changes the front and rear row tube changing arms 66, 68 from a single row arrangement to a staggered arrangement in the original position.
Move forward and place the full bobbin FB on the bobbin wheels 5a, 5.
Tube change bar 18 for pulling out from b and inserting empty bobbin
b moves forward from the original position in a single row arrangement, and pulls out eight empty bobbins EB in one row on the peg conveyor 201 (FIGS. 19a and b). Next, the tube change bar 18a for doffing the full bobbin is moved back and its tube change arm 6 is moved back.
The arrangement of the tubes 6 and 68 is changed from a staggered arrangement to a single row arrangement and lowered, and the tube changing bar 18b for inserting the empty bobbin is moved back and raised, and then moved forward and lowered (FIGS. 19c and d). Next, the tube change bar 18 for full bobbin doffing
a advances and descends to insert a full bobbin FB into the peg 204 of the peg conveyor 201, then moves backward and ascends to return to the original position, and the tube change bar 18b for inserting an empty bobbin is connected to its tube change arms 66, 68. Change the arrangement from a single row arrangement to a staggered arrangement, move forward and lower, and install the empty bobbin EB onto the bobbin rail 4.
It retreats, changes the tube exchange arms 66, 68 into a single row arrangement, and descends to return to the original position (Fig. 19e, f).
Next, the tube changing machine AD moves to the tube changing position by a predetermined pitch P3, and the peg conveyor 201 is also transferred, and the next eight empty bobbins EB are stopped at the next delivery position.
In this way, the pipe change operation is repeated one after another, and when all pipe changes of the rover frame 1 are completed, the pipe change machine AD moves to the standby position W shown in FIG. 18, and at the same time, the peg conveyor 201 is transferred and fried man bobbins
Move the FB to the back of the roving frame 1, restart the roving frame 1, fill the full bobbin FB, and empty the bobbin processing device 20.
Pull it out at 6.

Third Embodiment In FIG. 20, the front and rear row tube exchange arms 66,
Another example of the left-right distance changing device No. 68 will be described. A reference cylinder 302 with a stroke set to (P2-P)/2 is attached to the opposing lower side surfaces of the fourth front-row slider 53 and the fifth rear-row slider 54 from the left. The cylinder rod is connected from the lower plate of the tube change bar 18a to a screen 18c which is vertically installed to coincide with the center of the pitch of the fourth and fifth sliders 53 and 54, and
The main body and cylinder rod of a cylinder 301 having a stroke of (P-P1) are attached to the opposing lower side surfaces of the other front and rear sliders 53 and 54, respectively.

Fourth Embodiment Referring to FIGS. 21 to 23, still another embodiment of the left-right distance changing device for the front and rear tube exchange arms 66, 68 will be described. In this example, a cylindrical cam 401 is connected to the motor 65, and this cylindrical cam has a plurality of cam grooves 402a, 402b (four on each side symmetrically with respect to the pipe changing center CL of the pipe changing machine in this embodiment). The pitch of these cam grooves 402a and 402b at one end (point B in Figure 20) is the pitch P of the spinning creel, and the pitch at the other end (point A in Figure 20) when rotated by an angle θ. ) is set to the bobbin spacing P1 and P2 of the roving machine. On the other hand, a cuff follower 403 is attached to the lower ends of the front and rear row sliders 53 and 54, which are slidable left and right, and are slidably fitted into corresponding cam grooves 402a and 402b, respectively. Therefore, the cylindrical cam 401 moves from point B to point A.
When rotated by an angle θ, the front and rear row sliders 53,
The pitch of 54 is changed from P to P1 and from P to P2, and if the cylindrical cam 401 is reversed, the opposite pitch change to the above is performed. Needless to say, the number of teeth of the drive gear 63, driven gear 74, etc. is set so that the rear tube exchange arm 68 moves by L2 at this time.

In the above embodiment, the case where the adjacent bobbin wheels 5a and 5b of the rover frame 1 are arranged at unequal pitches (P1, P2) every fourth wheel is explained, but all the pitches are equal pitch P1. can also be applied, and in this case, all the left and right spacing changing devices may be configured to change to P-P1. In the above embodiment, a pipe changer with two staffs was explained, but the invention is not limited to this, and a pipe changer with one staff or a pipe changer with two staffs is used.
It is possible to use an appropriate pipe changer that is a multiple of the weight, or to change the reference position that restricts the movement of the left-right distance changing device in the left-right direction.

Furthermore, in the above embodiment, doffing and supply of empty bobbins were performed simultaneously by the husband's pipe changing bar, but the pipe changing bar for supplying empty bobbins was omitted and the empty bobbin supply was carried out manually. It's okay to get old.

Effects of the Invention As described above, in the present invention, when doffing full bobbins, for example, take out the full bobbins in a staggered manner on the bobbin rail, and adjust the front and rear and left-right spacing of the full bobbins in the staggered manner. The interval can be changed to the optimum interval when conveying to the spinning machine, and post-processing when doffing full bobbins is conveyed to the spinning machine can be simplified. Moreover,
By reducing the distance between the front and back of the staggered arrangement, the width of the entire tube changer can be made narrower than before. Therefore, the tube changing arm of the tube changing machine can also be shortened, and the strength problem is also solved. Further, even when the bobbin conveying device is installed on the front side of the roving frame, the width thereof can be made small, so that the space occupied by the bobbin conveying device can be made small. Also, when receiving empty bobbins from a conveying device that has a different arrangement of bobbin wheels and supplying them to the roving machine, the front and rear row tube exchange arms are operated to match the bobbin wheel arrangement of the roving machine. can be supplied. Moreover, since it is a wagon-type tube changer and the tube changer bar of this tube changer is equipped with a left-right and front-rear spacing changing device, the bobbin pitch can be changed by the tube changer before a full bobbin is loaded on the bobbin transport device. can. Therefore, it is possible to handle two or more full bobbins in a staggered arrangement at the same time, and the efficiency of tube exchange can be improved.

Furthermore, according to the second invention, since a pair of tube changing bars is provided at the front and rear, one for the full bobbin and the other for the empty bobbin, full bobbin doffing and empty bobbin device can be carried out in parallel. This has the advantage that pipe exchange can be performed extremely efficiently.

[Brief explanation of drawings]

Fig. 1 is a front view of the pipe switching machine according to the present invention, Fig. 2 is a vertical sectional view of the pipe switching machine with some parts omitted, Fig. 3 is a plan view of the pipe switching machine, and Figs. 4 to 6 are pipe switching machines. Figure 7 is a diagram showing the forward/backward movement and elevating mechanism of the exchange bar, and Figure 7 is an overall view of the front and rear pipe exchange arms for the front and rear rows, as well as the left and right spacing changing device.
The figure is a plan view of the front and rear row tube exchange arms, Figure 9 is a cross-sectional view of the tube change bar, Figure 10 is a cross-sectional view of Figure 9, and Figure 11 is a cross-section showing the connection state of two overlapped parts. 12A is a diagram showing a staggered arrangement, FIG. 12B is a diagram showing a single row arrangement, FIG. 13 is a plan development view of the bobbin carrier transfer device, FIG. 14 is an enlarged cross-sectional view of FIG. 13, and FIG. Figures 15 and 16 are explanatory diagrams of pipe switching operation, 1st
Fig. 7 is a diagram showing the second embodiment, Fig. 18 is an overall view of the second embodiment, Fig. 19 is an explanatory diagram of the pipe switching operation of the second embodiment, and Fig. 20 is another implementation of the left-right interval changing mechanism. Figures 21 to 23 showing examples are diagrams showing still other embodiments of the left-right distance changing device. AD...Tube changer, FB...Full bobbin, EB...Empty bobbin, 1...Rovering machine, 4...Bobbin rail, 5
a, 5b... Bobbin wheel, 18a, 18b...
...Pipe change bar, 19... Back-and-forth motion cylinder, 32...
Swing arm, 43... Lifting cylinder, 53
...Front row slider, 54...Rear row slider,
56, 57... Threaded body, 58, 61... Connection nut, 28a, 28b, 62, 73... Spline shaft, 65... Arrangement change motor, 66, 68...
Front and rear row tube replacement arms, 71...Rack, 72...
Pinion, 78...Transport rail, 81...Bobbin carrier, 83...Pipe support, 93...Rail, 9
4... Transfer device main body, 100... Feeding drum, 2
01...Petsug conveyor, 301,302...Cylinder.

Claims (1)

[Scope of Claims] 1. A double-row roving frame in which top-supported flyers are arranged in a staggered manner, and is movably and stopably disposed along the front surface of a double-row roving frame, and includes a roving frame and a bobbin along a row of bobbin wheels of the roving frame. In a tube changer that transfers roving bobbins between conveying devices, the tube changer body is equipped with a tube change bar that can move back and forth toward the front of the roving machine and can be raised and lowered. A tube exchange arm for the front row that can face the upper support flyer in the front row with the main body of the tube changer stopped at a predetermined pipe change position, and an upper support for the rear row adjacent to the upper support flyer in the front row in a staggered manner. The type flyer is provided with a rear row tube exchange arm that can face the type flyer, and the tube exchange bar further includes the front,
It is equipped with a left-right distance changing device that can change the mutual distance between the rear row tube exchange arms in the machine machine longitudinal direction, and a front-rear distance change device that can change the mutual distance in the front and back direction of the front and rear row tube exchange arms. A tube changing machine for a rover machine featuring the following. 2. The flyer is movably and stopably disposed along the front of a double-row roving frame consisting of top-supported flyers arranged in a staggered manner, and the roving is transferred between the roving frame and a bobbin conveying device along the row of bobbin wheels of the roving frame. In a bobbin transfer machine, the main body of the bobbin is equipped with a pair of bobbin change bars that can move back and forth toward the front of the roving machine and can be raised and lowered, and each of these tube change bars has the above-mentioned tube change bar. A front row tube exchange arm that can face the front row upper support flyer with the machine body stopped at a predetermined tube change position, and a rear row upper support flyer adjacent to the front row upper support flyer in a staggered manner. and a rear row tube exchange arm that can face each other, and the tube exchange bar further includes a left and right distance changing device that can change the mutual distance between the front and rear row tube exchange arms in the machine machine longitudinal direction;
A tube changer for a revolving frame, characterized in that it is equipped with a longitudinal distance changing device capable of changing the mutual distance between front and rear row tube change arms in the longitudinal direction. 3 A spline shaft that can be rotated by a drive device is arranged on the tube change bar along this tube change bar, and each rear row tube exchange arm is supported by the tube change bar so that it can freely move back and forth, and these rear row tubes are 2. The spacing change device according to claim 2, wherein the longitudinal racks provided on the interchangeable arm are meshed with pinions slidably fitted on the spline shaft to constitute the longitudinal spacing changing device. Tube changing machine for spinning machines. 4 A spline shaft that can be rotated by a drive device is arranged on the tube change bar along this tube change bar, and each front row tube exchange arm and rear row tube exchange arm is supported on the tube change bar so as to be movable left and right. , fix the threaded bodies loosely fitted on the spline shaft to these front and rear tube replacement arms, respectively, connect these adjacent threaded bodies to connecting nuts by screwing them from both sides, and connect the connecting nuts at the center. slidingly engaging the hole with the spline shaft;
3. The tube changer for a roving frame according to claim 2, further comprising a left-right spacing changing device by restricting left-right movement of one of the connecting nuts. 5 Each of the front row tube exchange arm and the rear row tube exchange arm is supported on a tube change bar so as to be movable left and right, and adjacent front and rear tube exchange arms are connected to each other with a cylinder, and the cylinders are 3. The tube changer for a roving frame according to claim 2, wherein the left-right spacing changing device is configured by regulating the left-right movement of the cylinder, which serves as a reference for left-right movement.