JPS6337243Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a centering device that accurately and reliably centers tire constituent members used in tire manufacturing, particularly thin ply cords, etc., without deforming them.

As a conventional tire component centering device, for example, one described in Japanese Patent Publication No. 46-38685 is known. This thing is
When a belt-shaped tread strip is carried into a roller conveyor consisting of a large number of rotatable and axially movable rollers, a pair of links are connected at the upper ends and a positive roller is attached to the lower end. The tread strip is moved along with the roller in the axial direction of the roller by being swung by a pair of cylinders so as to approach each other by equal distances at the same time, thereby centering the tread strip.

However, although this method does not pose much of a problem with thick tire components such as tread strips, it is useful when centering thin tire components such as ply cords and chafers with narrow widths. There is a problem in that both ends of the ply cord or the like in the width direction may be deformed, or the center of the ply cord may be significantly deformed so as to protrude upward. The reason for this is that generally the cylinder cannot be stopped at an intermediate position other than the end of its stroke, so the standby position of the standard roller remains constant regardless of the width of the tread strip being carried in. This standby position is set to be located outside both ends of the widest tread strip to be carried in. Therefore, when a narrow tire component is brought in, the distance between the normal roller and both ends of the tire component at the standby position is smaller than the distance when a wide tire component is brought in. becomes significantly larger. For this reason, when centering a narrow tire component, the time for the positive roller to move (the time from leaving the standby position to contacting the side edge of the tire component) becomes longer, and as a result, The forward roller is accelerated for a long time and reaches a high speed. For this reason, the collision force when colliding with the side end of the tire component increases, and when the tire component is a thin ply cord or the like, the ply cord or the like cannot withstand this collision force and deforms.

Another problem with the conventional centering device is that it requires the use of a cylinder with a long stroke. To explain the reason,
This is because, as mentioned above, the standby position of the positive roller is set to correspond to the widest tread strip, which requires a long stroke.

This invention was made in view of the above-mentioned problems, and aims to make it possible to reduce the stroke of the cylinder and to center thin and narrow tire components without deforming them.

This purpose consists of a transport mechanism that transports the belt-shaped tire component in the longitudinal direction while movably supporting it in the width direction, and a transport mechanism that is installed on both sides of the transport mechanism and is movable in the width direction of the tire component. a pair of centering members capable of contacting both widthwise ends of the tire component, a pair of transmission members each having one end connected to each centering member, and a piston rod having the other end connected to the transmission members. and a cylinder that moves the centering member by an equal distance in the width direction of the tire component by transmitting the movement of the piston rod to the centering member via the transmission member, In a centering device for a tire component, the tire component is centered by pressing centering members at both ends of the tire component by means of cylinders and bringing the centering members into contact with each other. In addition to making it possible to change the direction, a connecting device is provided to connect the centering member and the transmission member at each relative position after the change, so that when the width of the tire component is changed, the width of the centering member and the transmission member is changed. After changing the directional relative position, the centering member and the transmission member are connected by a connecting tool, and the distance between the centering members is adjusted in accordance with the change in the width of the tire component. This can be achieved with a centering device.

An embodiment of this invention will be described below based on the drawings.

In FIGS. 1 and 2, 1 and 2 are a pair of parallel side frames, and these side frames 1 and 2 have a large number of horizontal and parallel free rollers 3.
Both ends of are attached. Each free roller 3 includes a shaft 4, a sleeve roll 6 rotatably and axially movably supported on the shaft 4 via a linear slide bearing 5, and the sleeve roll 6 and side frames 1, 2. It consists of a pair of springs 7 and 8 that are interposed between them and return the sleeve roll 6 to the neutral position. Further, drive rollers (not shown) are also supported by the side frames 1 and 2. The free roller 3 and the drive roller as a whole constitute a conveyance mechanism 9, and this conveyance mechanism 9 conveys a tire component 10 such as a belt-shaped thin ply cord in its longitudinal direction, and also conveys a sleeve roll 6. It supports the tire component 10 so that it can move in the width direction by moving in the axial direction. Reference numeral 11 denotes a support frame whose both ends are attached to the side frames 1 and 2. A cylinder 12 extending in the longitudinal direction of the tire component 10 is fixed to this support frame 11.
2 is operated by air pressure. Guide shafts 13 and 14 are parallel to each other and have both ends fixed to the side frames 1 and 2, and sliders 15, 16, 17, and 18 are mounted on these guide shafts 13 and 14, respectively, in the width direction of the tire component 10. movably supported. Note that 19 is a linear slide bearing interposed between the guide shafts 13, 14 and the sliders 15, 16, 17, 18. slider 15,
Connection plates 20 and 21 extending in the longitudinal direction of the tire component 10 are attached to the lower ends of the sliders 17 and sliders 16 and 18, respectively, and each connection plate 20 and 21 has a plurality of through holes arranged in the width direction of the tire component 10. Holes 22 and 23 are formed. 24 and 25 are guide frames parallel to the connecting plates 20 and 21, and the relative positions of these guide frames 24 and 25 and the connecting plates 20 and 21 can be changed in the width direction of the tire component 10. And these guide frames 24, 25
After appropriately changing the relative position between the connecting plate 20, 21 and the connecting plate 20, 21, bolts 26, 27 as a connecting tool inserted into either of the through holes 22, 23 at the relative position are screwed into the guide frames 24, 25. Accordingly, the guide frames 24, 25 and the connecting plates 20, 21 are connected to each other. The free roller 3 is attached to the guide frames 24 and 25.
A large number of guide rollers 28 and 29 located therebetween are each rotatably supported, and these guide rollers 28 and 29 rotate around a vertical axis and are in contact with both widthwise ends of the tire component 10, respectively. I can do it. The guide frame 24, guide roller 28, guide frame 25, and guide roller 29 described above collectively constitute a pair of centering members 30, 31 that can respectively contact both ends of the tire component 10 in the width direction. The centering members 30 and 31 are located on both sides of the transport mechanism 9 and are movable in the width direction of the tire component 10. One ends of long links 34 and 35 are rotatably connected to the sliders 15 and 16 via pins 32 and 33,
Furthermore, one ends of long links 38 and 39 are rotatably connected to the sliders 17 and 18 via pins 36 and 37. The other ends of these long links 34, 35 are inclined so as to approach each other, and the other ends are connected to each other via a pin 40 and rotatably connected to the tip of the piston rod 41 of the cylinder 12. On the other hand, the other ends of the long links 38 and 39 are inclined so that they approach each other, and the other ends are connected to the pin 4.
They are connected to each other via 2. long link 34,
One end of short links 45, 46 is connected to the center in the longitudinal direction of 35 via pins 43, 44, and the other ends of these short links 45, 46 and one end of a tie rod 47 parallel to tire component 10 are connected to the pin. 4
8. In addition, long link 38,
One ends of short links 51 and 52 are connected to the longitudinal center of 39 via pins 49 and 50, and the other ends of these short links 51 and 52 and the other end of tie rod 47 are connected by pin 53. . The sliders 15, 17, the connecting plate 20, the long links 34, 38, the short links 45, 51, the sliders 16, 18, the connecting plate 21, the long links 3
5, 39, short links 46, 52 constitute a pair of transmission members 54, 55 as a whole, and one end of these transmission members 54, 55 is connected to centering members 30, 3
1, and the other end is connected to the tip of the piston rod 41 as described above. For this reason, when the piston rod 41 of the cylinder 12 moves, this movement is caused by the transmission members 54, 5
5 to the centering members 30, 31, and moves these centering members 30, 31 by the same distance in the width direction of the tire component 10, respectively. And centering members 30, 3
1 and the transmission members 54, 55 are adjusted in the width direction of the tire component 10 by inserting and tightening the bolts 26, 27 into the through holes 22, 23 at different positions as described above. .

Next, the operation of one embodiment of this invention will be explained.

First, prior to the centering work, if there is a change in the width of the tire component 10 to be carried in, the transmission member 5
4, 55 and the centering members 30, 31 are adjusted. That is, the centering member 3
By moving the centering members 30 and 31 in the width direction of the tire component 10 relative to the transmission members 54 and 55, respectively, the centering members 30 and 31 in the standby position are moved.
31 and both ends in the width direction of the tire component 10 to be carried in are adjusted to be approximately constant. In this work, first, the piston rod 41 of the cylinder 12 is protruded, and the long links 34, 35, 3
8 and 39 are tilted so that their one ends are separated from each other. As a result, the sliders 15, 17, the connecting plate 20, the guide frame 24, the guide roller 2
8 and sliders 16, 18, connection plate 2
1. The guide frame 25 and the guide roller 29 are guided by the guide shafts 13 and 14, respectively, and move by an equal distance in the width direction of the tire component 10, and are separated from each other. Next, in this standby position, after removing the bolts 26, 27, the guide frames 24, 2
5 is moved in parallel so as to approach the side frames 1 and 2 when a wide tire component 10 is carried in, and on the other hand, when a narrow tire component 10 is carried in, the side frames 1 and 2 are moved in parallel. the guide rollers 28, 29.
The distance between this and both ends of the tire component 10 to be carried in is made to substantially match a predetermined setting value. Next, the through holes 2 with which the bolts 26 and 27 are aligned
2, 23 and then tighten to attach the side frames 24, 25 to the connecting plates 20, 21. In this way, even if the width of the tire component 10 changes, the relative positions of the centering members 30, 31 and the transmission members 54, 55 are adjusted to keep the distance substantially constant. When the distance is a small value, the guide rollers 28,
29 comes into contact with both ends of the tire component 10 at low speed without being accelerated during centering, and will not be deformed even if the tire component 10 is thin and weak, such as a ply cord. In addition, the centering members 30 and 31 and the transmission member 5
4 and 55 is adjusted to maintain the above-mentioned distance substantially constant.
The stroke of the centering members 30, 31
It is sufficient to move the piston rod 41 by a distance slightly larger than the distance, and as a result, in order to keep the distance substantially constant in response to changes in the width of the tire component 10, the retraction limit of the piston rod 41, the long link The stroke of the cylinder 12 can be made smaller than in the case where the expansion limits of the cylinders 34, 35, 38, and 39 or the separation limits of the centering members 30 and 31 are adjusted, for example, by the position of a stopper. Moreover, since the relative positions of the centering members 30, 31 and the transmission members 54, 55 are adjusted in response to changes in the width of the tire component 10, and the distance between them is maintained substantially constant, the width of the tire component 10 is adjusted. The long link 3 when the centering members 30 and 31 are in the standby position even if the width of the long link 3 changes.
4, 35, 38, 39, short link 45, 46, 5
The inclination angles of the guide rollers 28 and 29 can be kept almost constant at all times, and as a result, the contact pressure of the guide rollers 28 and 29 against the tire component 10 can be kept constant regardless of changes in the width of the tire component 10. and wide tire component 10.
Even when centering the long link 34,3
5, 38, 39, short link 45, 46, 51, 5
2 can be prevented from expanding until it is near the dead point. Next, tire component 1
0 centering is performed, but in this case, first operate the cylinder 12 to center the piston rod 41.
can be withdrawn. This movement of the piston rod 41 is transmitted to the centering members 30 and 31 via the transmission members 54 and 55, and
0 and 31 approach each other by an equal distance in the width direction of the tire component 10 from the standby position. When part or all of the tire component 10 is deviated from the center line L of the centering device, for example, deviated upward in FIG. First, the tire component 10 collides with the guide roller 29, and a pressing force is applied to the tire component 10 toward the guide roller 29. As a result, the portion of the tire component 10 that is in contact with the guide roller 28 is deformed and moved together with the sleeve roll 6 toward the guide roller 29 . By pressing the guide rollers 28 and 29 into contact with both ends of the tire component 10 being conveyed by the cylinder 12, the widthwise center of the tire component 10 coincides with the center line L, and the tire Centering of the component 10 takes place. As mentioned above, the centering member 30,3
1 movement is performed by one cylinder 12, there may be centering defects that may occur when the centering members 30 and 31 are moved by separate cylinders, for example, if one cylinder is activated due to jamming, etc. This can prevent a situation in which the centering members 30, 31 become unable to move. Next, if such a centering device is incorporated in a cutting line, the tire component 10 is cut, and if such a centering device is incorporated in a tire molding line, the centering members 30, The tire is fed into the tire forming drum while its position is regulated by 31. next,
The cylinder 12 is actuated, and the centering member 30,
31 returns to the standby position, and the sleeve roll 6 is returned to the neutral position by the springs 7 and 8. The above is one cycle of centering, and the same cycle is repeated thereafter unless the width of the tire component 10 changes.

In addition, in the above-mentioned embodiment, the centering member 3
0, 31 and the transmission members 54, 55, but in this invention, the connection plates 20, 21 and the sliders 15, 17, 1
Connection position with 6, 18 or slider 15, 1
7, 16, 18 and long links 34, 38, 35, 3
The relative position between the centering member and the transmission member may be adjusted by changing the connection position with 9. Here, in the former case, the connecting plates 20, 21 constitute a part of the centering member, and in the latter case, the connecting plates 20, 21, the sliders 15, 17, 16, 18
constitutes a part of the centering member. In addition, connection plates 20, 21, slider 1
5, 17, 16, 18 are omitted, long link 34,
The side frames 24 and 25 are directly connected to 35,
These connection positions may be changed in the width direction of the tire component 10. Further, in the embodiment described above, the relative positions are adjusted by inserting the connecting bolts 26, 27 into different through holes 22, 23, but in this invention, the centering members 30, 31 or the transmission The tire component 10 is attached to one of the members 54 and 55.
By forming an elongated hole extending in the width direction of the elongated hole and changing the position of a bolt inserted into this elongated hole, the relative position can be adjusted. They may be connected by a threaded shaft extending in the width direction of the tire component 10 and formed with a reverse thread, and the relative positions may be adjusted by rotating this threaded shaft. In this way, the interval can be made to accurately match a predetermined setting value, and the interval can always be kept constant. In addition, in this invention, the free roller 61 constituting the conveyance mechanism 9 is connected to a shaft 62 and a number of short sleeves 63 rotatably and axially movably supported by the shaft 62, as shown in FIG. and a large number of springs 64 interposed between the short sleeves 63. This makes it easier for the tire component 10 to move in the width direction, improving centering accuracy.
Furthermore, in this invention, the conveyance mechanism may be constituted by an air slider having a large number of air jet ports formed on its upper surface. In this case, when moving the tire component 10 in the width direction, the tire component 1
0 is floating, no frictional resistance acts at all, and as a result, the extremely thin and weak tire component 10
But it can be centered.

As explained above, according to this invention, the relative position of the centering member and the transmission member can be changed in the width direction of the tire component, and the centering member and the transmission member can be changed at each relative position after the change. Since the connecting tool is provided, even if the width of the tire component changes, the distance between the centering member and both ends of the tire component in the standby position can always be kept constant. Therefore, even if the tire component is thin and weak, it can be centered without deforming it. Further, the stroke of the cylinder is sufficient to move the centering member by a distance slightly larger than the above-mentioned distance, and the size of the cylinder can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway plan view showing one embodiment of this invention, Fig. 2 is a partially cutaway perspective view thereof, and Fig. 3 is a perspective view showing another embodiment of the free roller constituting the conveyance mechanism. be. 9... Conveyance mechanism, 10... Tire component, 1
2... Cylinder, 26, 27... Connector, 30,
31... Centering member, 41... Piston rod, 54, 55... Transmission member.

Claims (1)

[Scope of utility model registration request] There is a conveyance mechanism that transports a belt-shaped tire component in the longitudinal direction while supporting it so as to be movable in the width direction. The piston rod has a pair of centering members that can come into contact with both ends in the width direction, a pair of transmission members each having one end connected to each centering member, and a piston rod having the other ends of these transmission members connected. a cylinder that moves the centering member by an equal distance in the width direction of the tire component by transmitting the movement of the centering member to the centering member via the transmission member, and the centering member is provided at both ends of the tire component being transported. In a centering device for a tire component, the relative position of the centering member and the transmission member can be changed in the width direction of the tire component in a centering device for a tire component, which centers the tire component by pressing each member into contact with each other by a cylinder. At the same time, a connector is provided to connect the centering member and the transmission member at each relative position after the change, and when the width of the tire component is changed, the relative position in the width direction of the centering member and the transmission member is changed. The centering member and the transmission member are then connected by a connecting tool, and the distance between the centering members is adjusted in accordance with a change in the width of the tire component. centering device.