JPS646944B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tire material cutting and feeding device.

2. Description of the Related Art During the radial tire manufacturing process, the apparatus shown in FIG. 1 is known as a first stage apparatus of a two-stage molding system for assembling tire components to form a green tire. This device consists of an expandable band forming drum a for wrapping the constituent members of the band CB when forming the carcass band CB, a rotating device for the drum a, an expanding and contracting device, and a crimping device that presses the materials on the drum. a band forming machine b equipped with a device, a device c for supplying the necessary materials to the drum a, a band transfer d for grasping and transferring the completed band CB from the outside, and a device for moving the transfer d. Orbit e
and the band transferred by the same transfer d.
a green case forming drum f which can be expanded and contracted for assembling components such as beads and sidewalls after receiving the CB; a headstock device g equipped with a rotation device and an expansion and contraction device for the drum f;
A plylock device h for crimping the material on the drum f, a plylock device i on the headstock g side for bead setting, plydown, and turn-up operations, a plylock device j for the same operations on the opposite side of the headstock, and a plylock device j for the same operations. Consisting of a movable tail stock device h and a device l for supplying sidewalls and other parts to the drum f,
A thin rubber sheet called an inner liner is automatically fed to the drum a from a material supply device c, and is automatically cut, automatically wrapped, and automatically bonded. After that, carcass ply CP with steel cord coated with raw rubber on the outer periphery.
is sent out from the supply device c, cut, wrapped, and joined to complete the carcass band CB. The completed carcass band CB is automatically transferred to drum f by transfer d.
It is automatically handed over to drum f. Also drum f
The upper carcass band CB is automatically plyed down at both ends of the drum f, the bead is automatically set, and turned up automatically, after which the sidewalls etc. are sent out from the material supply device l and wound. The green case GC is completed by being attached and automatically crimped. Also, the completed green case GC is automatically removed from the drum f.
It is now being transported to the second stage equipment.

When forming the carcass band CB, each operation of feeding, cutting, winding, and joining the carcass ply CP is performed manually by an operator.
The reason is as follows. That is, when cutting carcass ply, the cut length is detected by the rotation speed of the drive roller of the conveyor that moves the carcass ply, or by the rotation speed of the length measuring roller of the feed amount detector that touches the carcass ply. This method uses a method of cutting, stopping, and then cutting, so when the conveyor moves, there is no chance of slipping between the drive roller and the conveyor belt, between the conveyor belt and the carcass ply, or between the carcass ply and the measuring roller. , the ply may shift on the conveyor belt, the cut length may be incorrect, the amount of overlap may be less than expected at the joint, or even there may be no overlap, resulting in a lack of stability.
Furthermore, even if the predetermined cutting length can be measured accurately, there is a high probability that the cord will end up at the cutting position, and if the cord is steel wire cord (piano wire),
The carcass ply of a radial tire is an important strength member of the tire sidewall and can damage the cutter or disrupt the cutting length, and the lack of overlap can cause a serious accident. Therefore, the inner liner is wound around the drum a and joined together to complete the inner liner, and then the carcass ply is wound around and joined to complete the carcass band. Even if the work was automated, it was not possible to shorten the time required to form the carcass band, resulting in a decrease in productivity.

The present invention addresses the above-mentioned problems, and includes a first conveyor 63 and a second conveyor 64 that are connected to each other for transporting the carcass ply CP, and a carcass ply provided between the conveyors 63 and 64. The cutting device P detects the cut length of the carcass ply CP by counting the number of cords in the carcass ply CP transferred by the conveyors 63 and 64, and stops the conveyors 63 and 64, and cuts the carcass ply. A detector 74 that operates the ply cutting device P, and a suction device 116 that sucks the cut end of the carcass ply CP and moves in synchronization with the second conveyor 64 while the first conveyor 63 is stopped. The same adsorption device 116
After the cut end of the carcass ply CP is transferred onto the first conveyor 63, the first conveyor 63 and the second conveyor 64 are moved synchronously, and the cut end of the carcass ply CP is moved from the carcass ply cutting device P to the first conveyor 63. The tire material cutting and feeding device is characterized in that the detector 74 is disposed at a distance _L2 that is sufficiently shorter than the winding, and its purpose is to cut and feed carcass ply. The object of the present invention is to provide a tire material cutting and feeding device that can be automated and improve productivity and quality.

Next, the tire material cutting and supplying device of the present invention is
This will be explained with reference to one embodiment shown in Figures 13 to 13. A in Figure 2 is an inner liner forming drum that can be expanded and contracted to three diameters, b is a band forming machine, and c' is a material supply device (carcass ply supply device). ), D is a band transfer, which is conveniently improved for gripping the carcass ply band on the carcass ply forming drum M located in the first position (shown by the dotted line in FIG. 2). Also, e is the transfer track, f is the green case forming drum, and g
is the head stock device, h is the compression device, i, j are the plylock devices, k is the tail stock device, l
is a material supply device, M is an expandable and contractible carcass ply band forming drum, and N is a truck and track that enable the drum M to reciprocate between a first position and a second position;
When O is in the second position (molding position) of the drum M, a tail stock device supports the free end of the shaft of the drum M and rotates it, P is a material supply device with an automatic carcass ply cutting device, and Q is a cutting device. This is a material supply device containing P. The three-stage expansion/contraction mechanism for the inner liner forming drum A and the band forming machine B, respectively, is known from Japanese Patent Publication No. 51-19871, and detailed explanation thereof will be omitted. The material supply device c' is commonly called a servicer and supplies the constituent members of the inner liner to be assembled on the drum A, and is also well known and will not be described in detail. Further, the track of the band transfer D and its driving device e are used to reciprocate the transfer D between the drum A position and the drum f position, and this is also well known, and a detailed explanation thereof will be omitted. However, it has a stop position control device that accurately stops the drum A position, the drum f position, and the first position of the drum M, which will be described later, and is controlled so that the transfer D and drum M do not collide with each other when moving. . This stop position control device is also well known, and detailed explanation will be omitted. Further, the drum f receives the carcass band CB transferred by transfer D,
After that, the necessary parts constituting the green case, such as beads and sidewalls, are assembled according to a predetermined procedure, and a radial expand drum is particularly preferred. No. 51-21669, Special Publication 1977
This is well known from publications such as No.-31910 and Japanese Patent Publication No. 53-25580, and detailed explanation thereof will be omitted. In addition, the headstock device g mounts the drum f so that it can rotate and stop freely, and also has an expansion/contraction drive mechanism for the drum f, and a position at which winding of each material is started, that is, a seam of the material in the circumferential direction. A stop position control device for dispersing traffic is provided, but this is also well known and detailed explanation will be omitted. Further, the ply lock devices i and j are a so-called ply down device that deforms the overhang portion of the carcass band on the drum f inwardly, and a so-called ply lock device that deforms the overhang portion of the carcass band on the drum f inwardly.
It is composed of a so-called bead setting device that coaxially sets the bead on the bead, and a so-called turn-up device that wraps the bead in the overhang portion after the bead is set, but each of these devices is well known and detailed explanation thereof will be omitted. Also, a tail stock device on which the plylock device j is mounted, means for advancing and retracting toward the track e side, and a drum f of the device j.
The means for advancing and retracting the vehicle are also well known, and detailed explanation thereof will be omitted. The crimping device h is commonly called a stitcher, and after the bead is placed on the drum f, the overhang part is folded back, the folded part is crimped as necessary, and the folded part is then assembled. This is a crimping device for more securely bonding the sidewall and bead reinforcing material, and this is also well known, and detailed description thereof will be omitted. Further, the material supply device l is commonly called a servicer, and is a component of the green case to be assembled on the drum f, such as a side wall.
It supplies a bead portion reinforcing member. This is also well known like the material supply device c', and detailed explanation will be omitted. Further, as the drum M is the expandable drum described in Japanese Patent Publication No. 51-19871, the detailed explanation will be omitted.
However, unlike the drum A, the diameter of the drum M does not need to be expanded or contracted in three stages, but may be expanded or contracted in two stages.

Next, the present embodiment differs from the conventional one, namely, the gripping mechanism of the band transfer D, the cart and track device N that enables the carcass ply band forming drum M to reciprocate between two positions, and the carcass ply band forming drum M. The tail stock device O that enables support and rotation of the drum M at the first position, the automatic carcass ply cutting device P, and the automatic carcass ply feeding device Q will be explained in detail with reference to FIGS. 3 to 13. Then, the gripping mechanism of the band transfer D shown in FIGS.
-1, and a gripping device D-2 having the following configuration thereon:
is installed. 1 and 2 are C-shaped rings having a notch in the upper part, which are installed upright on the cart, and the axis X-X
Multiple sets of links 3 arranged equidistantly from the axis
A plurality of sets of brackets 1-a, 2 which pivotally connect each of the
- has a. The C-shaped rings 4 and 5 disposed in the middle of the C-shaped rings 1 and 2 are also provided with an X-shaped ring so as to face each of the brackets 1-a and 1-b.
- A plurality of brackets 4-a and 5-b are provided so that the distances from the X-axis are the same. The C-shaped rings 4 and 5 are mounted on a bearing nut 6-b that slides on a track 6-a of a linear motion device commonly called a linear motion bearing, which is arranged parallel to the X-X axis on a truck. . Further, a threaded rod 8 connected to an output shaft of a rotary drive device 7 mounted at a suitable position on the ring 1 or the truck is rotatably attached to a suitable position on the C-shaped rings 1 and 2. has a right-hand thread 8-a and a left-hand thread 8-b with the middle part as a boundary, and each screw is connected to a nut 4-b, 5-b (not shown) fixed to the rings 4 and 5, respectively.
are screwed together. In addition, the bracket 4-
Links 9 having a length twice the length of the link 3 are attached to a and 5-a so as to be able to swing freely, and the tip of each link 9 is rotatably attached to a bracket 10-a fixed at a suitable position on the segment 10. installed on. Further, the intermediate point of each ring is rotatably attached to the link 3. According to the above structure, the C-shaped rings 4 and 5 are synchronously separated in the X-X axis direction by the rotational drive device 7, and the plurality of segments 10 are separated from each other in the X-X axis direction due to the relationship between the links 3 and 9. It will expand and contract centripetally and synchronously. Also, on the inner surface of the segment 10 is a permanent magnet 10 (not shown).
-b is embedded, and has a diameter that almost matches the outer diameter of the carcass ply band to be gripped at the diameter reduction limit. Note that the cutouts of the C-shaped rings 4 and 5 are sized so as not to come into contact with the arm portions of the bogie and track device N, which will be described later.

In addition, the bogie and track equipment N shown in Figures 5 and 6
has a cart device N-1 for the carcass ply band forming drum M. Same trolley device N-1
An arm 20- is installed vertically below the trolley 20.
a, and the boss portion 20-b provided on the same arm 20-a.
and a hollow shaft 21 rotatably supported thereon,
A rod 22 movable in the axial direction within the same shaft 21, and a cylindrical bracket 2 fixed to the boss 20-b.
3, a slide 24 that can slide freely within the same cylinder, a cylinder 25 that has one end fixed to the bracket 23 and one end (rod) to the slide 24, and a disk 26 fixed to the slide 24.
and a collar 27 attached to the end of the rod 22 so as to be rotatable but not movable in the axial direction on the inner circumference of the disc, and the rod 22 serves as an expansion/contraction drive shaft for the drum M. are connected by known means. According to the above structure,
By pushing and pulling the rod of the cylinder 25, the rod 21 moves and the drum M is expanded or contracted, and the drum M is held rotatably regardless of the position of the rod 22. Note that the method of rotating the drum will be explained in the section regarding the tail stock device O, which will be described later. The other track device N-2 includes a plurality of columns 28 erected on the ground and a pedestal 2 supported by the columns 28.
9 and the track pedestal 3 fixed in place on the pedestal 29.
0, 31, and a linear track 32a, commonly called a linear motion bearing, disposed on each of the frames 30, 31 so as to be orthogonal to the track e, and a bearing nut 32b is engaged with the track 32a. and the same nut said bogie device N-1
It is attached to the lower surface of the trolley 20 of. Although not shown in the drawings, a rotary drive device is fixed at a suitable location on the pedestal 29, a gear is attached to the end of its output shaft, and a rack gear that meshes with the gear is connected to the trolley 29.
The carriage device N-1 is mounted at a proper position on the track 32a, and the bogie device N-1 travels on the track 32a by rotation of the drive device. Further, the track frames 30 and 31 are provided with stoppers 33 and 34 for regulating both ends of movement, and the stoppers allow adjustment so that the drum M coincides with the axis XX axis (first position) at the moving end of the carriage. 33, and an adjustment corresponding to the axis X'-X' (second position) parallel to the X-X axis is effected by the stopper 34 (see FIG. 8). Further, the arm (20-a) is connected to the notch of the gripping device D-2 of the transfer D that runs in the direction of the X-X axis when the drum M coincides with the X-X axis as shown in FIG. be placed in between.

Also, the tail stock device O shown in Figures 7 and 8
When the drum M is aligned with the first position X'-X' axis, the device engages with the free shaft end of the drum M to support the drum shaft and rotates the drum M to wind the carcass ply on the drum M. used for attaching. This tail stock device O includes a pawl clutch 40 that engages a pawl clutch M-1 attached to the shaft end of the device M.
, a shaft 41 having the same pawl clutch 40, and a shaft 41
a pedestal 42 that rotatably supports the pedestal, a sprocket 43 fixed to one end of the shaft 41, and a pedestal 42 that rotatably supports the pedestal 4;
2, a sprocket 45 attached to the output shaft of the device, and a chain 46 connecting the sprockets 43 and 45.
and a bearing nut 47a fixed to the lower surface of the pedestal 42, which is engaged with the bearing nut 47a and the pedestal 42.
8, and a cylinder 49, which is fixed at one end to the pedestal 42 and the other end to the pedestal 48, and the shaft end of the drum M is connected to the inner cylindrical portion of the pawl clutch 40. It is becoming more and more engaged. According to the above structure, when the cylinder 49 is extended, the pawl clutch 40 is separated from the pawl clutch M-1, and the drum M is moved from the carriage device N-1.
When it is moved by 1, it can be placed in a position where it does not get in the way. Further, after the drum M moves from the X-X axis (first position) to the X'-X' axis (second position), when the cylinder 49 is retracted, the pawl clutch 40
is engaged with the pawl clutch M-1, and the rotary drive device 4
4 allows the drum M to be rotated.

The automatic feeding device Q shown in FIGS. 8 and 9 includes a fixed pedestal 60, a conveyor pedestal 61 swingably attached to the pedestal 60, one end of which is placed in an appropriate position on the pedestal 60, and the other end of which is attached to the pedestal 60. The cylinders 62 and the pedestal 6 are respectively attached to appropriate positions on the pedestal 61.
1, a chain sprocket 66 attached to the drive shaft of the first conveyor 63 via an electromagnetic clutch 65, and an electromagnetic chain sprocket 66 attached to the drive shaft of the second conveyor 64. A chain sprocket 68 attached via a clutch 67, a known twin sprocket 71 connected to the sprockets 66 and 68 via chains 69 and 70, and the aforementioned sprocket 71 attached to the output shaft. Rotation drive device 7 on the pedestal 61 side
2, a bracket 73 fixed at a proper position on the pedestal 61, a detector 74 disposed at a proper position on the bracket 73, and the first and second conveyors 63, 6.
4, long electromagnetic plates 75 and 76 on the side of the pedestal 61 disposed in the gap between the parts Q-1 and 4, a known Fesstun part Q-1 having detectors 77 and 78, and a material feeding mechanism and liner not shown in the drawings. It consists of a carcass ply stock truck with a winding mechanism. In Fig. 8, CP is the carcass ply. The roller 63-a at the tip of the first conveyor 63 is disposed below the drum M on the X'-X' axis, and is pressed against the drum M by the extension of the cylinder 62, and when the drum M moves. in a lower, unobstructed position. Further, the detector 74 detects the number of steel cords SC extending over the entire widthwise area of the carcass ply CP moved by the conveyor belt 63-b of the first conveyor 63, as shown in FIG.
(a) Detects changes in magnetic force or capacitance caused by passing below.

(b) Detect changes in the amount of reflected sound waves.

(c) Detect surface irregularities.

It can be anything. As shown in FIG. 10, the carcass ply CP has a convex portion including the steel cord and a concave portion between the cords. Then, after the cutting edge steel cord SC of the carcass ply CP cut by the automatic cutting device P described later passes below the detector 74, the number of steel cords is counted by one of the methods described above. The first conveyor 63 stops when it reaches the tip roller 63-a section. The fact that the tip roller 63-a has been reached can be determined by reaching _a preset count number _N1 .
If the distance between the steel cord and the steel cord is L ₁ and the pitch of the steel cord is l, then N ₁ =L ₁ /l. Then, the drum M moves to the X'-X' axis, and the roller 63-a
, the drum M rotates, and the first conveyor 63
is driven, the carcass ply is wound, and the number of steel cords from the tip of the carcass ply to the position to be cut is added to the count number N ₁ ,
It will stop and be disconnected when the set count number _N2 is reached.
The count number _N2 is determined as follows. Let L ₂ be the distance between the detector 74 and the cutting blade at the cutting position, L ₀ be the length of the carcass ply to be cut, and D ₀ be the pitch diameter of the carcass ply when wound around the band forming drum A. , L ₀ = πD ₀ N ₀ = L ₀ /l = πD ₀ /l: Number of steel cords in the total length of carcass ply N ₀ = N ₂ +L ₂ /l N ₂ = N ₀ −L ₂ /l = πD ₀ −L ₂ /l Now D ₀ = 600mm, l = 3mm, L ₁ = 900mm, L ₂ =
If it is 400 mm, N ₁ =900/3=300, and N ₂ =1/3 (π×600−400)=494.7→495 or 496.

Further, the automatic cutting device P shown in FIGS. 9, 11, 12, and 13 has frames 80, 81, and
2, 83, a guide rod 84 fixed to the mounts 80, 81, a guide rod 85 parallel to the rod 84 fixed to the mounts 82, 83, and moving on the guide rods 84, 85. A movable pedestal 86 with one end connected to the pedestal 86 and the other end connected to the pedestals 80 and 82.
The electric cylinders 87 and 8 are respectively attached to the
8, guide rods 89, 90, 91, 92 guided in the vertical direction at appropriate positions of the pedestal 86, an elevating pedestal 93 fixed to the guide rods 89, 90, 91, 92, and one end connected to the pedestal. 93 , and the other end of the cylinder 9 is attached to the movable frame 86 .
4, 95, a bracket 115 fixed to the lower part of the lifting frame 93, and a bracket 115 fixed to the bracket 115 in the width direction (in the width direction of the carcass ply).
An electromagnetic plate 116 has a long length, a track frame 96 is swingably mounted on the elevating frame 93, and a cylinder 97 has one end attached to the same frame 96 and the other end attached to the frame 86, respectively. 98, a linear track 99-a of a linear motion device commonly called a linear motion bearing, which is arranged and fixed on the lower surface of the cutting device mount so as to match the direction of the steel cord in the carcass ply, and the same track. 99-
a bearing nut 99-b incorporated in a,
Cutting tables 100, 101 attached to the nut
and cutting blades 102 and 103 fixed to each of the cutting tables 100 and 101, one end of which is connected to the cutting cart 10.
0, the other end of which is cut off, and the chains 104 and 105 mounted on the trolley 101, and the track frame 9.
sprockets 106, 107 around which the chains 104, 105 are wound, sprockets 108, 109 mounted coaxially with each of the sprockets 106, 107; chain 1
10, a bracket 111 connecting both ends of the chain 110, a cylinder 112, commonly called a cable cylinder, equipped with the bracket 111 and arranged on the track mount 96 so as to be parallel to the track 99a, and the cutting cart. 10
The cutting blades 113 and 114 respectively heat the cutting blades 102 and 103 when the cutting blades 102 and 101 move to the positions indicated by the dashed dot lines in FIG. Note that the peripheral speed of the drum M and the first and second conveyors 63, 64 by the drive device 72
Electrical feedback control is performed to match the speed of the motor. Also, the speed of the second conveyor 64 by the drive device 72 and the electric cylinders 87, 8
Electric feedback control is performed so as to match the moving speed of the movable carriage 86 according to 8. According to the automatic material supply device Q and the automatic cutting device P described above, (i) the carcass ply CP that has been left slack in the festoon portion Q-1 is sent out by the second conveyor 64, and the slack is removed by the detector 78; When it is detected that the carcass ply CP is running low, the carcass ply CP is automatically fed out from the carcass ply CP stock truck, and when the detector 77 detects that the slack has increased, feeding from the truck is stopped. Thereafter, the same actions as described above are repeated as the paper is fed out.

(ii) On the other hand, the carcass ply CP on the first conveyor 63 and the second conveyor 64 has the tip of the ply connected to the detector 7.
After passing under 4, it is stopped at the count number N ₁ , and the tip of the carcass ply is lower than the detector.
It is stopped on the leading end roller 63-a in front of _L1 .

(iii) When the drum M is stopped in line with the
2 and carcass ply with roller 63-a.
Press the tip of the CP against the drum M.

(iv) After pressing, the drum M is rotated and the clutches 66 and 67 are connected to drive the driving device 73, so that the carcass ply CP is wound up while being pressed against the drum M. At this time, the circumferential speed of the drum M and the speeds of the first and second conveyors 63 and 64 are electrically controlled to match.

(v) While being wound around the drum M, the detector 74 continues to count _N1 .
When the count number _N2 is reached, the drum M and the first and second conveyors 63 and 64 are stopped.

(vi) Next, the electromagnets 75 and 76 are excited to attract the carcass ply CP (to attract the steel cord in the carcass ply).

(vii) Next, the cylinders 94 and 95 are moved to the elevating frame 93.
lower. The electromagnetic plate 116 is the electromagnetic plate 76
When the cutting blades 102, 103 come into contact with the carcass ply CP, the lower stage of the mount 93 is stopped. At this time, the height between the cutting blade tips and the electromagnetic plate 116 is taken into consideration so that the cutting blades 102, 103 break through the carcass ply CP.

(viii) After that, when the cylinder 112 is actuated to move the bracket 111 to the right in FIG. 11, the cutting blade 102 moves to the left in FIG. 12, and the cutting blade 103 moves to the right. The rubber part between the steel cords of the carcass ply CP is torn from the center to both sides.

(ix) Then, when the clutch 67 and the electromagnet 75 are released and the drum M and the first conveyor 63 are operated synchronously again, only the carcass ply on the first conveyor 63 is wound onto the drum M, and the winding starts. The leading end of the ply and the trailing end of the ply at the end of winding are pressed together by the roller 63-a to complete the carcass ply band CPB, and then the cylinder 62 releases the pressure bonding of the roller 63-a.

(x) After that, the tail stock device O releases the connection with the drum M, and when released, the drum M
Move from the X'-X' position to the X-X position.

() During the step (x), the electromagnet 76 is released on the device P and Q sides, and the electromagnet 116 is energized, so that the elevating frame 93 is raised. As a result, the tip of the ply that was left behind is attracted to the magnet 116 and lifted, and the cutting blades 102, 103
will also rise.

() Next, the cylinders 97 and 98 are operated to swing the cutting blades 102 and 103 upward.

() Next, the second conveyor 64 is connected to the drive device 72.
electric cylinder 87,
88 is activated and placed in the position shown by the dashed dotted line in FIG. The leading end of the ply is placed on the first conveyor 63.

() The clutches 67 and 68 are connected again, the first and second conveyors 63 and 64 are driven, and after the tip passes the detector 74, it stops at the count _N1 and waits until the next cutting time comes. do.

() On the other hand, for process (), the movable platform 86
is returned to its original position (cutting travel position) by electric cylinders 87 and 88. Note that when the movable platform 86 is returned by the electric cylinders 87 and 88, both the first and second conveyors 63 and 64 are stopped.

() Until the next cutting, the cutting blades 102, 103
are heated and maintained at a temperature suitable for cutting by heaters 113 and 114.

Next, the overall operation of the tire forming apparatus will be explained with reference to FIG. 2. In Figure 2, the band transfer D transfers the carcass band CB for the Nth tire to the drum f and then returns to the drum M at the first position with the completed carcass ply band CPB at the second position. Approaching, the band on the drum f
After receiving the CB, the Nth green case is being molded according to the prescribed procedure. From this state, () the transfer D is stopped in alignment with the first position of the drum M, and grips the carcass ply band CPB on the drum M from the outside.

() Transfer the Nth carcass band to D
After being delivered to drum A, the (N+1)th inner liner band ILB is automatically wound around the second outer diameter, cut, and joined.

() Once the inner liner band ILB is completed,
The drum M is reduced in diameter in the radial direction, and the drum M
Upper (N+1)th carcass ply band
Hand over CPB to Band Transfer D.

() After the diameter of the drum M has been reduced, the band transfer D runs, stops at the drum A position, and coaxially extends the (N+1)th inner liner band ILB made with the second diameter. ) Position the main carcass ply band CPB.

() When the transfer D is placed in the drum A position, the drum M is returned to the first position and the tail stock device O is engaged, following the steps (i) to () described above for devices P and Q. (N+2)
Start automatic winding, cutting, and joining of carcass ply bands for real tires.

() Following the process in (), drum A expands to the third diameter, expands the (N+1)th inner liner band ILB, and presses it against the inner surface of the (N+1)th carcass ply band CPB. .
After the pressure contact, the transfer member D expands its gripping claws, moves back to the first position on the drum M, and presses the (N+1)th inner liner band on the drum A.
The ILB and the (N+1)th carcass ply band CPB are securely crimped by the stitcher device, and the (N+1)th carcass band CB is completed.

() Transfer D stops again at drum A position, completing the (N+1)th carcass band.
The CB is gripped from the outside, the drum A is reduced in diameter to the first diameter, and the carcass band CB is delivered to the transfer D.

() Next, transfer D moves to the first position of drum M, and waits until drum f requires the (N+1)th carcass band CB.

() When transfer D moves to the first position of drum M, forming of the (N+2)th inner liner band ILB begins on drum A.

() Even if the forming work of the (N+2) carcass ply band CPB on the drum M is completed in the second position, the drum M remains in the second position until the transfer D moves toward the drum f side. Retained.

(XI) Nth green case on drum f
GC is completed and taken out of the device, (N+1)
When the time came when it was safe to receive the actual carcass band CB, Transfer D, which was holding the (N+1)th carcass band and waiting,
travels toward the drum f side. At an appropriate time during the run, the drum M, which had been in the second position, is moved to the first position, and the (N+2)th carcass ply band is moved to the first position.
Waiting for CPB to be handed over to Transfer D.

(XII) Band transfer D, which handed over the (N+1)th carcass band CB to drum f,
The drum M is returned to the first position. Similarly below,
While the (N+2)th carcass band CB is being prepared, the (N+1)th green case GC is completed on the drum f, and tires are continuously produced. In this example, the drum f is used as the green case molding drum of the first stage device in the two-stage molding method.
The expandable drum device described in Japanese Patent No. 35256 can also be applied to a two-stage molding method.

The tire material cutting and feeding apparatus of the present invention is configured as described above, and has the effect of automating the carcass ply cutting and feeding operations and improving productivity and quality.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

Fig. 1 is a plan view of the first stage device in a conventional two-stage molding system, Fig. 2 is a plan view showing an embodiment of the present invention, and Fig. 3 is a side view and a sectional view of the band transfer. , Figure 4 is another side view of the same transfer as seen from the drum A side, Figure 5 is a side view of the carcass ply forming drum, the car for the drum, and the track, and Figure 6 is when the drum is in the first position. 7 is a side view showing the relationship with the band transfer from the drum A side, FIG. 7 is a side view showing the relationship with the tail stock device when drum A is in the first position, and FIG. 8 includes the automatic cutting device. A side view of the material supply device, tail stock device, drum M, cart, and track, FIG. 9 is a side view of the automatic cutting device installed in the material supply device of FIG. 8, and FIG. 10 is a steel cord of the automatic cutting device. A detailed explanatory diagram of the number detection section, FIG. 11 is a plan view of the automatic cutting device of FIG. 9,
FIG. 12 is a front view of the automatic cutting device, and FIG. 13 is a plan view of the cutting blade moving table viewed from the conveyor side. 63...First conveyor, 64...Second conveyor, 74...Detector, 116...Adsorption device, P...
...Carcass ply cutting device.

Claims (1)

[Claims] 1. A first conveyor 63 and a second conveyor 64 that are connected to each other to transfer carcass ply CP, a carcass ply cutting device P provided between each of the conveyors 63 and 64, and each of the conveyors 63 and 64.
carcass ply by counting the number of cords in the carcass ply CP transferred by
The cutting length of the CP is detected and each of the conveyors 63,
64 and actuates the carcass ply cutting device P, while the first conveyor 63 is stopped, the carcass ply is cut off.
It is equipped with a suction device 116 that suctions the cut end of the CP and moves in synchronization with the second conveyor 64, and after the cut end of the carcass ply CP is transferred onto the first conveyor 63 by the suction device 116, the first conveyor 63 and the second conveyor 64 are configured to move synchronously, and the carcass ply cutting device P
A tire material cutting and supplying device characterized in that the detector 74 is disposed at a distance _L2 sufficiently shorter than one roll of carcass ply CP.