JPH0871981A - Method of cutting belt-like material and device therefor - Google Patents

Abstract

PURPOSE: To make a cut face of a rubber sheet inclined with respect to the front and rear surfaces of a belt-like member when the overlapped part of the band-like ply and the rubber sheet is cut. CONSTITUTION: In the case of cutting an overlapped part between a rubber sheet G and a belt-like ply P, a cutter 80 is rotated and inclined until the lower end part thereof pushes up the rear surface side of a downstream belt-like member B, from a cutting line. At that time, the cut face of the belt-like ply is restrained by steel cords S so as to be substantially perpendicular to the outer and rear surfaces thereof, but the cut face of the rubber sheet G is not restrained by anything, thereby it is possible to incline the cut face of the rubber sheet by an angle substantially coincident with the inclination angle of he cutter 80.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention cuts a strip-shaped member consisting of a strip-shaped ply in which a cord extending substantially in the width direction is embedded and a rubber sheet superposed on the center of the back surface of the strip-shaped ply, along the cord. The present invention relates to a method and an apparatus for cutting a strip-shaped member.

[0002]

2. Description of the Related Art Conventionally, as a method and apparatus for cutting a strip-shaped ply in which a large number of cords extending in the width direction are buried, a horizontal strip-shaped ply is cut along the cord, for example, Japanese Patent Laid-Open No. 4-289094. Are known. This includes a guide extending along the cord above the belt-shaped ply, a moving base movably supported by the guide, a moving means for moving the moving base along the guide, and a vertically movable support on the moving base. And a cutter having a cutting edge that cuts the strip-shaped ply at the lower end and is supported by the elevating table so as to extend in the up-down direction. Lower the blade until the lower end penetrates the strip-shaped ply and intersect the cutting edge with the strip-shaped ply.After that, move the moving table, the lifting platform, and the cutter along the guide by the moving means to move the strip-shaped ply along the cutting line. The cutting is performed from one end side to the other end side.

[0003]

Here, in recent years, in order to improve the quality and work efficiency of the belt-shaped member, a rubber sheet, for example, an inner liner rubber is preliminarily laid on the belt center ply to form a belt-shaped member, It has been proposed to cut the strip-shaped members at a stretch in the laminated state. However, when such cutting is performed using the above-described cutting method and device, since the extending direction of the cutter (vertical direction) and the front and back surfaces (horizontal) of the strip-shaped member are substantially orthogonal to each other,
The cut surface of the belt-shaped member, particularly the cut surface of the rubber sheet, becomes substantially perpendicular to the front and back surfaces of the belt-shaped member.
Then, the strip-shaped member cut and cut in this manner is then joined by abutting the start and end ends thereof. However, when the entire member is made of rubber like a rubber sheet, it takes time. There is a problem in that the rubber shrinks over time and the cut surface is deformed, resulting in incomplete butt joining. On the other hand, since the cut surface of the strip-shaped ply is restrained by the cord embedded inside and hardly deforms, the butt joint is surely performed and there is no problem.

The present invention provides a method and an apparatus for cutting a strip-shaped member, which is capable of inclining the cut surface of the rubber sheet with respect to the front and back surfaces of the strip-shaped member when the strip-shaped ply and the rubber sheet forming the strip-shaped member are cut together. The purpose is to provide.

[0005]

[Means for Solving the Problems]
Into the strip-shaped member consisting of a horizontal strip-shaped ply in which a large number of cords extending substantially in the width direction are embedded, and a rubber sheet laminated on the center of the back surface of this strip-shaped ply, push the cutter until its lower end penetrates. This allows the cutting blade provided at the lower end of the cutter to intersect the strip-shaped member, and then the cutter is moved along the cord so that the cutting blade of the cutter moves the strip-shaped member from the one end side to the other side. In the method for cutting a strip-shaped member that is cut toward the end side, at the time of cutting at least the overlapping portion of the rubber sheet and the strip-shaped ply, the cutter passes through the cutting blade and the lower end of the strip is centered on a straight line substantially parallel to the cord. Secondly, by the method of cutting the belt-shaped member in which the belt-shaped member on the downstream side of the cutting line is rotated until it is pushed up from the back surface side, A guide extending along the cord above a belt-shaped member composed of a horizontal belt-shaped ply in which a cord is embedded and a rubber sheet superposed on the center of the back surface of the belt-shaped ply, and movably supported by the guide. A moving table, a moving means for moving the moving table along a guide, an elevating table supported to be movable up and down by the moving table, an elevating means for elevating the elevating table, and a lower end supported by the elevating table so as to extend in the vertical direction. A cutter having a cutting blade for cutting the strip-shaped member, and the elevating means lowers the lifting platform until the lower end of the cutter penetrates the strip-shaped member, intersects the cutting blade with the strip-shaped member, and then moves by the moving means. A device for cutting a belt-shaped member, in which a table, a lifting table, and a cutter are moved along a guide so that the cutting blade cuts the belt-shaped member from one end side to the other end side along a cutting line. The cutter is supported on an elevating table so as to be rotatable about a straight line that passes through the cutting blade and is substantially parallel to the cord, and rotation means for rotating the cutter about the straight line is provided, and at least a rubber is provided. When the overlapping portion of the sheet and the strip-shaped ply is cut, the cutter is rotated by the rotating device until the lower end of the cutter pushes up the belt-shaped member whose downstream side is downstream from the cutting line from the back side by the rotating means. This can be achieved by a cutting device for the member.

[0006]

Now, assume that the horizontal strip-shaped member made of the strip-shaped ply and the rubber sheet is conveyed to the downstream side by a predetermined length in the longitudinal direction and stopped, and the cutting line of the strip-shaped member reaches just below the cutter. Next, the elevating table is lowered by the elevating means to push the cutter extending in the vertical direction into the strip-shaped member, and the lower end of the cutter is inserted between the cords adjacent to each other on the cutting line. The lowering of the cutter is continued until the lower end of the cutter penetrates the strip-shaped member, at which time the cutting edge of the cutter intersects the strip-shaped member. After that, by means of moving means,
The lifting table and the cutter are moved along the guide, and the cutting blade of the cutter cuts the strip-shaped member from one end side to the other end side along the cutting line, but at least the widthwise central portion of the strip-shaped member, that is, the rubber sheet. The cutting of the overlapping portion of the band-shaped plies is performed in a state in which the cutter is rotated by a predetermined angle toward the upstream side by the rotating means. Here, since the rotation of the cutter is performed around a straight line that passes through the cutting blade and is substantially parallel to the cord, the cutting blade of the cutter does not deviate from the cutting line of the belt-shaped member even by this rotation. The rotation of the cutter described above is performed until the lower end of the cutter pushes up the belt-shaped member on the downstream side of the cutting line from the back surface side, so that the cutter largely inclines toward the upstream side around the cutting edge. . Then, when both the rubber sheet and the strip-shaped ply are cut by the cutter in such an inclined state, the crossing angle between the cutter and the strip-shaped ply is constrained by the cord embedded in the strip-shaped ply to be a substantially right angle. The cutting surface of the ply is almost perpendicular to the front and back surfaces, but since there is no constraint on the crossing angle between the cutter and the rubber sheet, it becomes almost the same angle as the inclination angle of the cutter, resulting in the cutting of the rubber sheet. The surface is substantially parallel to the cutter, that is, inclined with respect to the front and back surfaces of the rubber sheet in the inclination direction of the cutter by substantially the same angle as the inclination angle of the cutter. Here, since the cutter is inclined toward the upstream side as described above, the starting end side (downstream end side) cutting surface of the cut rubber sheet projects toward the downstream side from the starting end side cutting surface of the strip-shaped ply. While extending and inclining, the end side (upstream end side) cut surface of the cut rubber sheet is inclined while retracting from the end side cutting surface of the strip-shaped ply toward the upstream side. The strip-shaped members separated by being cut in this way are then joined by abutting the start and end thereof, but at this time, as described above, the cut surfaces of the rubber sheet at the start and end sides are Since the inclined surfaces are inclined in the same direction, the joining area increases, and as a result, even if the rubber sheet contracts and deforms over time, all the portions are surely joined and the butt joining becomes good.

According to the third aspect of the invention, when the strip-shaped member is cut by the cutter extending in the vertical direction, it is possible to prevent the cutter from being displaced from the cutting line. Further, according to the fourth aspect, the band-shaped member can be cut well.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1, 2 and 3, 11 is a pair of base frames extending in the front-rear direction, and both end portions of a horizontal connecting frame 12 orthogonal to the base frames 11 are fixed to the base frames 11. The base frame 11 slightly rearward of the connecting frame 12 rotatably supports both ends of a rotary shaft 13 with a pulley parallel to the connecting frame 12, and the rotary shaft 13 with a pulley and the rotary shaft 13 with a pulley are provided behind the rotary shaft 13. A conveyor belt 14 is hung between a rotary shaft with a pulley (not shown) provided below the rotary shaft. In addition, the base frame directly below the connecting frame 12
Both ends of a rotary shaft with a pulley 15 parallel to the connecting frame 12 are rotatably supported on the rotary shaft 11 and a rotary shaft with a pulley (not shown) provided in front of the rotary shaft with a pulley 15 and the rotary shaft with a pulley 15. A conveyor belt 16 is stretched between the shaft and the shaft. The pulley-equipped rotary shaft 13, conveyor belt 14 as a whole constitutes a rear conveyor 17, and the pulley-equipped rotary shaft 15 and conveyor belt 16 constitute a front conveyor 18 as a whole, and after these, front conveyors 17, 18 Runs forward by being given a rotational driving force individually or simultaneously from the motor 19 attached to the base frame 11, and then the belt-shaped member B placed on the front conveyors 17, 18 is moved. It is conveyed in the longitudinal direction toward a molding drum (not shown) installed in the front. here,
As shown in FIGS. 10 and 11, the belt-shaped member B has a horizontal belt-shaped ply P in which a large number of steel cords S extending in the width direction are embedded, and a back surface (lower surface) of the belt-shaped ply P.
It is composed of a rubber sheet G, for example, an inner liner, superposed on the central portion.

1, 2, 3, and 4, a horizontal support frame 21 having both ends fixed to the base frame 11 is arranged between the front conveyors 17 and 18, and the upper surface of the support frame 21 is shown in FIG. After that, a bridging body 22 that fills the space between the front conveyors 17 and 18 is attached. The upper surface of the bridging body 22 is located at the same height as the upper ends of the front side conveyors 17 and 18, and a long groove 23 extending along the bridging body 22 is formed on the upper surface thereof. Within this long groove 23 is the long groove.
A bridging plate 24 having the same shape as that of the bridging plate 23 is housed so as to be able to move up and down.
Less than the depth of. Reference numeral 25 is a vertical cylinder fixed to the lower surface of the bridging body 22, and the tip of the piston rod 26 of this cylinder 25 is connected to the bridging plate 24.
As a result, when the piston rod 26 of the cylinder 25 projects or retracts, the bridging plate 24 is moved between a raised position where the upper surface is flush with the upper surface of the bridging body 22 and a lowered position where the bridging plate 24 is recessed in the long groove 23. Move up and down. Two relatively shallow guide grooves 27, 28 extending along the bridging plate 24 are formed on the upper surface of one end of the bridging plate 24.

2 and 3, both ends of a gate-shaped frame 31 are fixed to the base frame 11 behind the support frame 21, and a bracket 32 fixed to the central portion in the longitudinal direction of the gate-shaped frame 31 swings. A base end portion of the frame 33 is rotatably supported via a rotary shaft 34 with a pulley. A rotary shaft with a pulley 35 parallel to the rotary shaft with a pulley 34 is rotatably supported at the tip of the swing frame 33, and the rotary shafts 34, 35 with a pulley are provided between the rotary shafts 34, 35 in the longitudinal direction of the gate-shaped frame 31. A pair of conveyor belts separated in the width direction of the belt-shaped member B)
36 are hung. Further, these conveyor belts 36 can run by receiving the rotational driving force from the motor 19. The swing frame 33, the rotary shafts 34 and 35 with pulleys, and the conveyor belt 36 described above collectively constitute a swing conveyor 37. Reference numeral 38 denotes a cylinder extending in the front-rear direction, which is connected to the central upper surface of the portal frame 31 via a bracket 39, and the tip of a piston rod 40 of the cylinder 38 is connected to the swing frame 33. As a result, when the piston rod 40 of the cylinder 38 is projected or retracted, the swing conveyor 37 is in a horizontal position in which it is horizontal,
In order to avoid interference with a movable table, which will be described later, the tip can be swung between an inclined position in which the tip is lifted upward.
When the swing conveyor 37 is located at the horizontal position, the swing conveyor 37 overlaps with the downstream end of the rear conveyor 17 and the upstream end of the front conveyor 18, and is moved upward from them by a distance equal to or more than the thickness of the belt-shaped member B. Separated. Also,
A large number of permanent magnets (not shown) are attached to the conveyor belt 36 of the swing conveyor 37. As a result, the conveyor belt 36 picks up the steel cord S in the belt-shaped ply P and lifts the belt-shaped member B. Can be held. For this reason, when the conveyor belt 36 travels when the swing conveyor 37 is in the horizontal position, the belt-shaped member B floats up from the rear conveyor 17 and is adsorbed and held by the conveyor belt 36, and then the bridge 22 and the bridge plate. It passes above it without interfering with 24, then leaves the conveyor belt 36 and is transferred onto the front conveyor 18.

1, 2, 3, 4, 5, and 6, a guide rail 42 parallel to the connecting frame 12 is laid on the rear surface of the connecting frame 12, and the guide rail 42 is located above the strip ply P. And extends along the steel cord S. Reference numeral 43 denotes a movable base, which has a slide bearing 44 slidably engaged with the guide rail 42. A guide plate 45 is fixed to the connecting frame 12 directly above the guide rail 42 and is a guide plate parallel to the guide rail 42.
The pair of guide rollers 47 is rotatably supported via a pair of guide rollers 47 and is sandwiched from the front and rear. The guide rail 42,
The guide plate 45 as a whole constitutes a guide 48 extending along the steel cord S above the belt-shaped member B, and the guide 48 movably supports the movable table 43. A motor 50 is attached to an upper surface of one end of the connecting frame 12, and a sprocket 52 fixed to an output shaft 51 of the motor 50 and a rotatably supported upper surface of the other end of the connecting frame 12 via a bearing box 53. An endless chain 55 is hung between the sprocket 54 and the sprocket 54. Both ends of the chain 55 are connected to the moving table 43. As a result, when the motor 50 operates and the chain 55 runs,
The moving base 43 moves along the guide 48 while being guided by the guide 48, in other words, along the steel cord S of the strip-shaped ply P in one direction or the other direction. The above-mentioned motor 50, sprockets 52, 54, and chain 55 as a whole,
A moving means 56 for moving the moving base 43 along the guide 48 is configured.

A pair of guide blocks 60 are mounted on the movable table 43.
Is fixed, and a guide rod 61 extending in the up-down direction is vertically inserted into these guide blocks 60. An elevating body 62 is attached to the lower ends of these guide rods 61, and a tip end of a piston rod 64 of a cylinder 63 as an elevating means which is attached to a moving base 43 between the guide blocks 60 and extends vertically is attached to the elevating body 62. It is connected. Two pins 65, which are separated in the front-rear direction, are fixed to the elevating body 62, and these pins 65 extend in the up-down direction. The other ends of parallel links 66, which are horizontal follow-up mechanisms extending toward the one ends, are rotatably connected to these pins 65, and two pins extending in the vertical direction are connected to one ends of the parallel links 66. A support 68 is connected via 67. As a result, when the parallel links 66 are tilted in the parallel state, the support body 68 moves in parallel in the horizontal plane without changing its posture, which allows the cutter 80 described later to follow the waviness of the steel cord S. It will be possible. 69 is a cylinder fixed to the other end of the lifting body 62 and extending parallel to the guide rail 42. The tip of the piston rod 70 of this cylinder 69 extends in the front-rear direction arranged on the other side from the other end of the parallel link 66. The pressing plate 71 is fixed. Then, when the piston rod 70 of the cylinder 69 is projected and the pressing plate 71 is pushed out toward the parallel links 66 and pressed against the flat surface 72 formed at the other end of each parallel link 66, both parallel links 66 are guided. Positioning is locked in a state of being parallel to the rail 42. The elevating body 62, the parallel link 66, and the supporting body 68 as a whole constitute an elevating table 73 which is supported by the moving table 43 so as to be able to move up and down, and the elevating table 73 moves up and down by the operation of the cylinder 63.

1, 4, 5, and 7, the support 68
A rotary actuator 76 as a rotating means is attached to the rotary actuator 76.
The reference numeral 77 is substantially parallel to the steel cord S, and more specifically, extends along a straight line L which is inclined slightly upward toward the other end with respect to the extending direction of the steel cord S. This rotation axis 77
A horizontal connecting shaft 79 is fixed to the tip of the shaft via a helical joint 78, and a supporting block 81 that extends in the vertical direction and supports a cutter 80 heated by a heater is attached to the connecting shaft 79. . As a result, the cutter 80 is cantilevered by the lifting platform 73 via the rotary actuator 76, the helical joint 78, and the connecting shaft 79. And
A cutting edge 82 that is recessed in an arc shape toward one end is formed at the lower end of the cutter 80. The cutting edge 82 is made of steel cord S.
While cutting the strip-shaped member B in between along the cutting line D,
It is located on the straight line L. Then, when the rotary actuator 76 operates to rotate the rotary shaft 77, the cutter 80 is normally rotated about 60 to 90 degrees until the cutter 80 becomes substantially horizontal toward the upstream side about the straight line L. Also, this cutting edge
A V-shaped sub-cutting edge 83 is provided on the lower end of the cutter 80 near 82.
Are formed. A tapered portion 84 that tapers upward is formed at the center of the connecting shaft 79, and a pressing cylinder 85 extending in the up-down direction is attached to the support body 68 above the tapered portion 84. A pressing member 87 is attached to the tip of a piston rod 86 of the pressing cylinder 85, and a taper groove 88 that can be fitted into the tapered portion 84 is formed on the lower end surface of the pressing member 87. When the piston rod 86 of the pressing cylinder 85 projects and the taper groove 88 of the pressing member 87 is fitted into the tapered portion 84 of the connecting shaft 79, the rotation of the connecting shaft 89 and the cutter 80 is restricted, and the cutter The 80 is locked with it extending vertically. The pressing cylinder 85 and the pressing member 87 described above as a whole are a locking mechanism that positions and locks the cutter 80 in a state of extending in the vertical direction.
Make up 89.

1, 2, 4, 8, and 9, a guide rail 42 is provided at one end of the connecting frame 12 via a bearing 92.
A screw shaft 93 as a moving mechanism parallel to is rotatably supported, and the screw shaft 93 is screwed into a slider 94 slidably supported by the guide rail 42. Two parallel brackets 95 and 96 extending toward the other end are attached to the slider 94, and these brackets 95 and 96 are arranged immediately after and immediately before the cutting line D of the belt-shaped member B, respectively. . U-shaped gripping bodies 97 and 98 are attached to the tip ends of the brackets 95 and 96, and these gripping bodies 97 and 98 are inserted into the guide grooves 27 and 28, respectively, and the thicknesses of the guide grooves 27 and 28 are It has a lower wall equal to the depth. On the upper surface of the upper wall of the gripping bodies 97, 98, gripping cylinders 99, 1 respectively
00 is attached, and the gripping cylinders 99 and 100 have horizontal piston plates at the tips of the piston rods 101, respectively.
102 is attached. As a result, when the gripping cylinders 99, 100 are actuated and the piston rod 101 is projected, one end of the strip-shaped member B is immediately below and immediately before the cutting line D by the lower wall parts of the gripping bodies 97, 98 and the gripping plate 102. It is pinched. The above-mentioned brackets 95, 96, gripping body 97,
98, the gripping cylinders 99, 100, and the gripping plate 102 collectively constitute gripping mechanisms 103, 104 for gripping one end of the belt-shaped member B immediately after and immediately before the cutting line D, and these gripping mechanisms 103, 104 are belt-shaped. When the width of the member B is changed, the screw shaft 93 is rotated to move along the bridging plate 24 to follow the width change. Reference numeral 105 is a handle for rotating the screw shaft 93.

Next, the operation of the embodiment of the present invention will be described. Now, assuming that the rear side conveyor 17 and the front side conveyor 18 travel forward at the same speed in synchronization with each other, and the belt-shaped members B placed on the rear side conveyor 17 and the front side conveyor 18 are conveyed in the longitudinal direction. To do. When the belt-shaped member B is conveyed by a predetermined length and the cutting line D of the belt-shaped member B reaches just below the cutter 80, the traveling of the rear side conveyor 17 and the front side conveyor 18 is stopped.

Next, the gripping cylinders of the gripping mechanisms 103 and 104
99 and 100 are actuated to project the piston rod 101, and one end portion of the strip-shaped member B is grasped immediately below and immediately before the cutting line D from above and below by the grasping plates 102 and lower wall portions of the grasping mechanisms 103 and 104. Next, the piston rod 26 of the cylinder 25 is retracted, and the bridging plate 24 is lowered from the raised position which is at the same height as the bridging body 22 to the lowered position where the bridging plate 24 is immersed in the long groove 23. As a result, the bridging plate 24 retracts from the movement trajectory of the cutter 80 during cutting.

Next, the motor 50 is operated to drive the chain 55 to move the movable table 43 guided by the guide rails 42 and the guide plates 45 from the standby position to just above the cutting start position K shown in FIG. Here, the cutting start position K is a position away from one end of the belt-shaped member B to the other side by a predetermined distance, for example, about 50 mm, but this position K is one side from one end of the rubber sheet G, It consists of the strip ply P only. Next, when the piston rod 64 of the cylinder 63 is projected to lower the elevating table 73 and the cutter 80 is pushed into the strip-shaped member B, the lower end of the cutter 80 is cut along the cutting line D of the strip-shaped member B (strip-shaped ply P). It is inserted between the steel cords S adjacent to each other above. And the lowering of this cutter 80 is
Is performed until the lower end of the blade 80 penetrates the strip-shaped member B, and at this time, the cutting edge 82 of the cutter 80 has the same height as the strip-shaped member B (strip-shaped ply P) and intersects with this, as shown in FIG.
Here, since the taper groove 88 of the pressing member 87 is fitted into the tapered portion 84 of the connecting shaft 79 by the operation of the pressing cylinder 85 when the cutter 80 is inserted, the cutter 80 is in a state of extending in the vertical direction. It is locked and the insertion position does not deviate from the cutting line D. Further, at the time of this insertion, since one end of the strip-shaped member B is gripped from above and below by the gripping mechanisms 103 and 104, a certain amount of tension is applied to the strip-shaped member B, whereby the strip-shaped member B is elongated. 23 It prevents the situation of dropping into the inside of the
Is smoothly inserted.

Next, the motor 50 is operated to drive the chain 55 to move the moving table 43, the lifting table 73, and the cutter 80 toward one end. As a result, the strip-shaped member B (strip-shaped ply P) on the one end side of the cutting start position K is cut by the auxiliary cutting edge 83 of the cutter 80. At this time, since the cutter 80 is locked by the lock mechanism 89 as described above,
The band-shaped member B is cut exactly along the cutting line D. When the cutter 80 reaches the one end of the belt-shaped member B,
The operation of the motor 50 is stopped. Next, the motor 50 is operated again to cause the chain 55 to travel, and the moving table 43, the lifting table 73, and the cutter 80 are moved to the cutting start position K in the opposite direction, that is, to the other end side. At this time, the cutter 80 moves within the cut formed immediately before.

Next, the piston rod 86 of the presser cylinder 85
After retracting the pressing member 87 from the tapered portion 84 of the connecting shaft 79 to make the cutter 80 rotatable, the rotary actuator 76 is operated to move the rotating shaft 77, the connecting shaft 79, and the cutter 80 to the upstream side. Toward (counterclockwise in Figure 4)
Rotate. Here, since the rotation of the cutter 80 is performed around the straight line L, the cutting edge 82 of the cutter 80 does not deviate from the cutting line D of the belt-shaped member B even by this rotation. And this cutter 80 is at a predetermined angle, usually 60
The rotation of the rotary actuator 76 is stopped when it is rotated by a certain angle between 90 degrees and 90 degrees.
As shown in FIG. 11, the lower end of the cutter 80 pushes up the belt-shaped member B on the downstream side of the cutting line D from the back surface side, and is largely inclined with respect to the front and back surfaces of the belt-shaped member B. Next, the piston rod of the cylinder 69
Retract 70 and press plate 71 to parallel surface of parallel link 66
The parallel link 66 can be tilted by detaching it from 72.

Next, the chain 55 is moved by the motor 50 to move the moving table 43, the lifting table 73 and the cutter 80 to the guide rail 42.
The strip-shaped member B is cut between the adjacent steel cords S along the cutting line D from the one end side to the other end side by the cutting blade 82 of the cutter 80. Here, until the cutter 80 reaches the one end of the rubber sheet G, the cutter 80 cuts only the strip-shaped ply P, but the steel cord S is contained in the strip-shaped ply P. Since it is embedded, even if it is cut by the inclined cutter 80 as described above, the crossing angle between the cutter 80 and the front and back surfaces of the strip-shaped ply P is constrained by the steel cord S to be a substantially right angle. The cut surface of the ply P is substantially perpendicular to the front and back surfaces thereof. During such cutting, immediately before and immediately before the cutting line D at one end portion of the strip-shaped member B, the strip-shaped member B is gripped from above and below by the gripping mechanisms 103 and 104 as described above, so that the strip-shaped member B is changed by the cutting force of the cutter 80. The situation of being dragged to the edge is prevented. In addition, at the time of this cutting, the steel cord S embedded in the strip ply P may not be a straight line but may be slightly wavy.
In such a case, the parallel link 66 tilts and the cutter 80
Is slightly moved in the longitudinal direction of the belt-shaped member B to follow the waviness of the steel cord S. Moreover, since the helical joint 78 as a flexible joint is interposed between the lifting platform 73 and the cutter 80, the helical joint 78 is flexibly deformed during cutting and the cutter 80 is slightly displaced. That is, the cutting of the strip-shaped member B is made good.

When the cutter 80 reaches the one end of the rubber sheet G, the cutter 80 cuts both the rubber sheet G and the strip-shaped ply P, which are superposed on each other. The cut surface is substantially perpendicular to the front and back surfaces for the same reason as described above. On the other hand, since the cut surface of the rubber sheet G does not restrain the cutter 80, the crossing angle between the cutter 80 and the rubber sheet G is set. Is almost the same as the angle of inclination of the cutter 80.
Substantially parallel to the above, that is, inclined with respect to the front and back surfaces of the rubber sheet G in the inclination direction of the cutter 80 by substantially the same angle as the inclination angle of the cutter 80. Here, since the cutter 80 is inclined toward the upstream side as shown in FIG.
The cut surface G1 of the starting end side (downstream end side) of the cut rubber sheet G
As shown in FIG. 12, the cutting surface P1 on the starting end side of the strip ply P is
From the end side (upstream end side) of the cut rubber sheet G, the cut surface G2 of the cut rubber sheet G is upstream from the end side cutting surface P2 of the strip ply P. Inclining downward while retracting toward. After that, when the cutter 80 reaches the other side end of the rubber sheet G, the cutter 80 again cuts only the strip-shaped ply P while keeping the inclined state. For the same reason, it is almost perpendicular to the front and back surfaces. Then, when the cutter 80 cuts the strip-shaped member B over the entire width from one end to the other end, the operation of the motor 50 is stopped. Then, the rotary actuator 76 is operated to rotate the cutter 80 until it extends vertically, and the piston rod 86 of the pressing cylinder 85 is projected to lock the connecting shaft 79 and the cutter 80 by the pressing member 87.
At this time, the piston rod 64 of the cylinder 63 is retracted to raise the elevating table 73, and then the motor 50 is operated to move the moving table 4
3, the lifting platform 73, the cutter 80 is returned to the standby position, the piston rod 70 of the cylinder 69 is projected to press the pressing plate 71 against the flat surface 72 of the parallel link 66, so that the parallel link 66 is parallel to the guide rail 42. Positioning locks when the condition is reached. At this time, the piston rod 26 of the cylinder 25 is projected to raise the bridging plate 24 to the raised position, and the piston rods 101 of the gripping cylinders 99 and 100 are retracted to raise the gripping plate 102.
The band-shaped member B is released from the grip by the gripping mechanisms 103 and 104.

Next, only the front side conveyor 18 is run, the strip-shaped member B separated by cutting is conveyed forward toward the forming drum, and is stuck around the forming drum. Then, when the strip-shaped member B is attached to the forming drum over the entire length, the start and end of the strip-shaped member B are butted against each other and joined. At this time, as described above, the rubber sheet G is formed.
Since the cut surfaces G1 and G2 on the start and end sides are inclined surfaces that are inclined in the same direction, the joining area increases, and as a result, the rubber sheet G
However, even if it contracts and deforms over time, all the parts are securely joined, and the butt joining becomes good.

Next, after the piston rod 40 of the cylinder 38 is projected to swing the swing conveyor 37 from the inclined position to the horizontal position, the rear conveyor 17, the front conveyor 18, and the swing conveyor 37 are moved at the same speed. Drive forward. As a result, the starting end of the belt-shaped member B floats up from the rear conveyor 17 and is adsorbed and held by the permanent magnets of the conveyor belt 36, and then passes over the bridging body 22 and the bridging plate 24 without interfering with the permanent magnets. It is conveyed to the front conveyor 18 and transferred from the conveyor belt 36 onto the front conveyor 18. When the starting end of the belt-shaped member B is transferred to the front conveyor 18 in this way, the rear conveyor 17 and the front conveyor 1
8. After stopping the traveling of the swing conveyor 37, the cylinder 38
The piston rod (40) is retracted, and the swing conveyor (37) is swung to an inclined position where the tip is lifted upward to avoid interference with the moving table (43) and the like. Next, the rear conveyor 17 and the front conveyor 18 are made to travel, and the belt-shaped member B is bridged to the bridge plate 24.
It is transported from the front while being supported from below by. The above is one cycle of the operation of the embodiment of the present invention, and thereafter, this cycle is repeated, the band-shaped member B is cut into a predetermined length, and the band-shaped member B is stuck around the molding drum one after another. In addition, when the type of the strip-shaped member B to be cut is changed and its width is changed, the handle 105,
By rotating the screw shaft 93, the gripping mechanism 103, 104
Is moved in the width direction following the width change of the belt-shaped member B so that one end of the belt-shaped member B can be always gripped.

In the above-described embodiment, the strip ply P from the cutting start position K to the one end of the rubber sheet G and the strip ply P on the other side from the other end of the rubber sheet G are inclined by the cutter 80. However, in the present invention, the strip-shaped member B at these portions may be cut by a cutter that extends vertically, and at least the overlapping portion of the rubber sheet and the strip-shaped ply is cut. Only when the cutter is inclined is it necessary. Further, in the present invention, an inclined cutter is pushed into one end of the belt-shaped member B, or a cutter extended in the vertical direction is pushed and then rotated and inclined.
After that, the strip-shaped member B may be cut all at once from the one end to the other end by the cutter in this inclined state.

[0025]

As described above, according to the present invention, when cutting the overlapping portion of the belt-shaped ply and the rubber sheet, only the cut surface of the rubber sheet can be inclined with respect to the front and back surfaces of the belt-shaped member. .

[Brief description of drawings]

FIG. 1 is a front sectional view showing an embodiment of the present invention.

FIG. 2 is a plan view thereof.

FIG. 3 is a side sectional view thereof.

FIG. 4 is a side sectional view of a moving table, a lifting table, and the vicinity of a cutter.

FIG. 5 is a front sectional view of the vicinity of a movable table, a lifting table, and a cutter.

6 is a cross-sectional view taken along the line II of FIG.

7 is a sectional view taken along the line II-II of FIG.

FIG. 8 is a front sectional view of the vicinity of a gripping mechanism.

9 is a view taken along the line III-III in FIG.

FIG. 10 is an explanatory diagram illustrating a method of cutting a belt-shaped member.

FIG. 11 is a cross-sectional view illustrating a cut state of the belt-shaped member.

FIG. 12 is a cross-sectional view showing the band-shaped member after cutting.

[Explanation of symbols]

 43 ... Movement base 48 ... Guide 56 ... Movement means 63 ... Elevation means 73 ... Elevation base 76 ... Rotation means 78 ... Flexible joint 80 ... Cutter 82 ... Cutting edge 89 ... Lock mechanism B ... Band-shaped member P ... Band-shaped ply S ... Steel Code G ... Rubber sheet D ... Cutting line L ... Straight line

Claims (4)

[Claims] 1. A belt-shaped member comprising a horizontal belt-shaped ply in which a large number of cords extending substantially in the width direction are embedded, and a rubber sheet which is superposed on the center of the back surface of the belt-shaped ply,
By pushing the cutter until its lower end penetrates, the cutting edge provided at the lower end of the cutter and the strip-shaped member are crossed, then the cutter is moved along the cord, and the strip-shaped member is moved by the cutting blade of the cutter. In the method of cutting a strip-shaped member that is cut from one end side to the other end side along the cutting line, at least when cutting the overlapping portion of the rubber sheet and the strip-shaped ply, the cutter passes through the cutting blade and becomes almost a cord. A method for cutting a strip-shaped member, characterized in that a strip-shaped member whose lower end portion is downstream from a cutting line is pushed about a parallel straight line until it is pushed up from the back surface side. 2. A strip-shaped member made up of a horizontal strip-shaped ply in which a large number of cords extending substantially in the width direction are embedded, and a rubber sheet superposed on the center of the back surface of the strip-shaped ply, and along the strip-shaped member. An extending guide, a moving table movably supported by the guide, a moving means for moving the moving table along the guide, an elevating table supported by the moving table so as to be vertically movable, and an elevating means for elevating the elevating table. A cutter having a cutting edge that is supported by the elevating table so as to extend in the vertical direction and that cuts the strip-shaped member at the lower end, and the elevating means lowers the elevating table until the lower end of the cutter penetrates the strip-shaped member and cuts the cutting edge. After crossing the belt-shaped member, the moving means moves the moving table, the lifting table, and the cutter along the guide, and the cutting blade moves the belt-shaped member from the one end side to the other end side along the cutting line. A band-shaped member cutting device configured to cut by means of a cutter, wherein the cutter is supported on an elevating table so as to be rotatable about a straight line that passes through a cutting blade and is substantially parallel to the cord, and the cutter is rotated about the straight line. A turning means for turning is provided, and when cutting at least the overlapping portion of the rubber sheet and the band-shaped ply, the turning means causes the cutter to center the straight line and the lower end of the cutter is the band-shaped member downstream of the cutting line. A band-shaped member cutting device, wherein the device is rotated until it is pushed up from the side. 3. The band-shaped member cutting device according to claim 2, further comprising a lock mechanism for restricting rotation of the cutter when the cutter extends in the vertical direction. 4. The cutting device for a belt-shaped member according to claim 2, wherein a flexible joint is provided between the cutter and the lifting table to allow the cutter to be displaced during cutting.