JP3741511B2 - Centering device for strip member - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a centering device that corrects a deviation when a belt-like member is displaced in the width direction.
[0002]
[Prior art]
As a conventional belt centering device, for example, a device described in Japanese Patent Application Laid-Open No. 7-164556 is known. This includes a base extending in the width direction of the belt-shaped member, a pair of guide members that are supported by the base so as to be movable in the longitudinal direction, and can be engaged with both ends of the belt-shaped member in the width direction, A pulley rotatably supported at one end in the longitudinal direction and having a circumferential groove on the outer periphery, and a central portion is inserted into the circumferential groove of the pulley, one guide member from the pulley being one guide member and the other guide from the pulley being the other guide A strip that is connected to a member, and a belt that is attached to one end of the linear member and that has a weight to apply a moving force in a direction to approach the guide member, and passes between the pair of guide members When a member is displaced in the width direction and one of the guide members is pressed and moved away from the remaining guide member, the weight approaches the remaining guide member together with the belt-shaped member. By so that movement is obtained so as to return the belt-shaped member to the centering position.
[0003]
[Problems to be solved by the invention]
However, in such a conventional belt-shaped member centering device, the belt-shaped member is shifted to one side so as to approach the pulley, and the one-side guide member close to the pulley is moved away from the other-side guide member. When this is done, the guide member on the other side does not receive external force from the belt-like member, so it continues to stop at the position as it is, which causes the linear body to loosen between the pulley and the guide member on the other side and There was a case where the linear body was detached from the circumferential groove. When such a situation occurs, the centering operation must be temporarily interrupted and the linear body must be inserted again into the circumferential groove of the pulley, resulting in a decrease in work efficiency. There is a point.
[0004]
It is an object of the present invention to provide a centering device for a belt-shaped member that improves work efficiency by preventing the linear body from detaching from the circumferential groove.
[0005]
[Means for Solving the Problems]
The purpose of this is to provide a base extending in the width direction of the belt-shaped member, a pair of pulleys rotatably supported at both longitudinal ends of the base and having circumferential grooves formed on the outer periphery, and a base between these pulleys. A pair of guide members that are supported so as to be movable in the longitudinal direction of the base and can be respectively engaged with both ends in the width direction of the belt-like member, and between the pulleys with a part inserted in the circumferential groove of the pulley An endless linear body that is stretched and connected to one guide member on one side of the straight line connecting the rotation axes of the pulley and the other guide member on the other side, and the guide member are moved in a direction to approach each other. And when the belt-like member passing between the pair of guide members is displaced in the width direction so that any one of the guide members is separated from the remaining guide members, the moving means is Can be achieved by returning the belt-shaped member to the centering position Re of the guide member is moved so as to approach with strip to the rest of the guide member.
[0006]
Assume that the belt-shaped member passes between the guide members. If the belt-like member is displaced in the width direction, for example, one side in the width direction in such a state, one guide member is pushed by the belt-like member to move to one side and is separated from the other guide member. At this time, since one side of the endless linear body is connected to one guide member, the linear body travels toward the one side, whereby the pulley rotates around the rotation axis, and The other side of the shaped body travels toward the other. Here, since the other guide member is connected to the other side of the linear body, the other guide member moves in the opposite direction to the one guide member by the travel of the linear body, that is, to the other side by an equal distance. To do. Such an operation is performed in the same manner even when the belt-like member is displaced to the other side in the width direction. As a result, the linear body is loosened only by traveling as a whole, regardless of the direction of the belt-like member. There is nothing wrong. Thereby, the situation which a linear body detaches | leaves from the circumferential groove | channel of a pulley is blocked | prevented, and working efficiency improves. Next, when the external force for the moving means to bring the one guide member closer to the other guide member becomes larger than the external force for the belt-like member to move the one guide member to one side, the one guide member and the belt-like member are The moving means moves to the other guide member so as to approach the other guide member. At this time, since the linear body travels in the opposite direction to the above, the other guide member also approaches one guide member. When the other end in the width direction of the belt-like member engages with the other guide member, both guide members cannot move any more and stop. At this time, the belt-like member returns to the centering position.
[0007]
When the strip member passes between the guide members at a high speed, the guide member may move rapidly so as to pick up and jump off the unevenness on the side end of the strip member. If comprised in this way, the run of a linear body, ie, the movement of a guide member, will be restrict | limited by the frictional resistance of the side surface of the circumferential groove | channel of a pulley, and a linear body, and unnecessary jump will be suppressed.
In addition, when a belt-like member in which a cord inclined with respect to the longitudinal direction is embedded inside is attached to the drum and the gap exists between the belt and the drum, the belt-like member is bent and deformed in the width direction. As a result, even if centering is performed, the centering device may be stuck in a state of being shifted from the drum. However, if configured as described in claim 4, the centering device is moved to a position where such shift is expected in advance. And the belt-like member can be accurately applied to a desired position of the drum.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In FIGS. 1, 2, and 3, reference numeral 11 denotes a belt-like member such as a belt ply in which a large number of cords 12 inclined at a predetermined angle with respect to the longitudinal direction are embedded. Is cut obliquely along the cord 12. 13 is a conveyor that conveys the belt-shaped member 11 toward the tire forming drum 14, and the conveyor 13 floats the belt-shaped member 11 by, for example, blowing air from the upper surface. Can be allowed to move in the width direction.
[0009]
In FIGS. 1, 2, 3, and 4, 16 is a centering device installed in the vicinity of the conveyor 13. This centering device 16 has a fixed frame 17, and this fixed frame 17 has a width direction of the belt-like member 11. The extending base 18 is supported so as to be movable in the longitudinal direction of the base 18, that is, in the width direction of the belt-like member 11. A pair of pulleys 19 and 20 are supported at both longitudinal ends of the base 18 so as to be able to rotate around a vertical axis, and circumferential grooves 22 extending continuously in the circumferential direction on the outer circumferences of the pulleys 19 and 20, respectively. 23 is formed. Reference numeral 24 denotes an endless linear body, for example, a wire, which is stretched between the pulleys 19 and 20, and the linear body 24 is partially inserted into the circumferential grooves 22 and 23. Here, the groove width W of the circumferential grooves 22 and 23 is preferably set to a value obtained by adding 0.2 to 0.8 mm to the diameter d of the linear body 24. The reason for this is that when the groove width W is within the above-mentioned range, the pulleys 19 and 20 rotate, in other words, when the linear member 24 travels, the linear member 24 and the pulleys 19 and 20, more specifically in the circumferential direction. This is because an appropriate value of frictional resistance is generated between the side surfaces of the grooves 22 and 23, and the movement of the pulleys 19 and 20 is moderately suppressed. The groove depth D of the circumferential grooves 22 and 23 is preferably in the range of 0.7 to 2.0 times the diameter d of the linear body 24 in order to keep the value of the frictional resistance within an appropriate range. . Instead of defining the groove width W as described above, the side surfaces of the circumferential grooves 22, 23 are roughened by applying, for example, a matte finish, sandblasting, etc., and when the pulleys 19, 20 are rotated, An appropriate value of frictional resistance may be generated between the linear body 24 and the pulleys 19 and 20.
[0010]
Again, in FIGS. 1, 2, and 3, the base 18 has a pair of guide rods 27 extending in the longitudinal direction of the base 18, and the guide rods 27 are a pair of sliders 28 disposed between the pulleys 19 and 20. , 29 is slidably inserted. Support plates 30 and 31 extending in the longitudinal direction of the belt-like member 11 are fixed to the sliders 28 and 29, and a plurality of guide rollers 32 and 33 are supported on the support plates 30 and 31 at equal distances in the longitudinal direction. Yes. The guide rollers 32 and 33 can freely rotate about the vertical axis, and the outer periphery thereof can be engaged with both ends of the belt-like member 11 in the width direction. The sliders 28 and 29, the support plates 30 and 31, and the guide rollers 32 and 33 are supported by the base 18 between the pulleys 19 and 20 so as to be movable in the longitudinal direction of the base 18, and the width direction of the strip member 11 is A pair of guide members 34 and 35 that can be respectively engaged with both side ends are configured. Here, one side portion 24a of the linear body 24 located on one side of the straight line connecting the rotation axes of the pulleys 19 and 20 is connected to one guide member 34, more specifically, the slider 28 by a connecting member 36, and The other side portion 24b of the linear body 24 located on the other side of the straight line is connected to the other guide member 35, specifically the slider 29, by the connecting member 37. As a result, one side portion of the linear body 24 is obtained. When 24a travels toward one side and the other side 24b travels toward the other, the guide members 34 and 35 move by an equal distance in a direction away from each other, and conversely, one side 24a of the linear body 24 When the other side portion 24b travels toward one side toward the other side, the guide members 34 and 35 move by an equal distance in a direction approaching each other. 38 and 39 are U-shaped cross-section guides attached to the front ends of the support plates 30 and 31, and these guides 38 and 39 guide the belt-like member 11 passing between the guide members 34 and 35 forward. The drum 14 is provided.
[0011]
Reference numeral 41 denotes a guide roller rotatably supported on the other end of the fixed frame 17 via a bracket 42. One end of the guide roller 41 is connected to one guide member 34, specifically the slider 28, via a hook 43. A central portion of a rope 45 that is connected and has a weight 44 attached to the other end is suspended. As a result, one guide member 34 is always given a constant pulling force (weight) regardless of its position from the weight 44, so that the guide member 34 approaches the other guide member 35. The movement is transmitted to the other guide member 35 via the linear body 24, and the other guide member 35 is moved so as to approach the one guide member 34. The guide roller 41, the weight 44, and the rope 45 described above constitute a moving means 46 that moves the guide members 34 and 35 in a direction in which they approach each other.
[0012]
Reference numeral 50 denotes a screw member that is rotatably supported on one end of the fixed frame 17 and extends in the longitudinal direction of the base 18. The male threaded portion 51 of the screw member 50 is screwed into a screw block 52 attached to the base 18. is doing. As a result, when the screw member 50 is rotated by a predetermined amount, the base 18 moves and stops in the longitudinal direction of the base 18 while being supported by the fixed frame 17, but the amount of rotation of the screw member 50 is adjusted. Thus, the stop position of the base 18 can be adjusted. The screw member 50 and the screw block 52 described above constitute an adjusting means 53 that adjusts the stop position of the base 18 as a whole.
[0013]
Next, the operation of one embodiment of the present invention will be described.
Now, it is assumed that the belt-like member 11 is conveyed forward by the conveyor 13 and passes between the guide members 34 and 35. If the belt-like member 11 is displaced in the width direction, for example, one side in the width direction in such a state, the guide roller 32 engaged with the one side end of the belt-like member 11 is shifted from the belt-like member 11 to one side. A directing pressing force is directly applied, whereby one guide member 34 moves to one while being guided by the guide rod 27 and is separated from the other guide member 35. At this time, since one side portion 24a of the linear body 24 is connected to the guide member 34 via the connecting member 36, the one side portion 24a travels toward one side by being pulled by the guide member 34. Thus, the pulleys 19 and 20 rotate around the rotation axis, and the other side portion 24b of the linear body 24 travels toward the other. Here, since the guide member 35 is connected to the other side portion 24b of the linear body 24 via the connecting member 37, the guide member 35 is pulled by the linear body 24 and guided to the guide rod 27. However, it moves by an equal distance in the opposite direction to the guide member 34 and is separated from the guide member 34. Such an operation is performed in the same manner when the belt-like member 11 is shifted to the other side in the width direction, and as a result, the linear body 24 only travels regardless of which direction the belt-like member 11 is displaced. There is no such thing as loosening. As a result, the situation in which the linear body 24 is detached from the circumferential grooves 22 and 23 of the pulleys 19 and 20 is prevented, and as a result, the work of reworking the linear body 24 becomes unnecessary and the work efficiency is improved. .
[0014]
Next, when the constant force that the weight 44 tries to bring the guide member 34 closer to the guide member 35 becomes larger than the external force that the band-like member 11 moves the guide member 34 to one side, the guide member 34 and the belt-like member 11 It is pulled by the rope 45 and moves to the other side so as to approach the guide member 35. At this time, since the linear body 24 travels in the opposite direction to that described above, the guide member 35 also moves to one side by an equal distance. To approach. When the other end in the width direction of the belt-like member 11 whose one end in the width direction is engaged with the guide roller 32 of the guide member 34 is engaged with the guide roller 33 of the guide member 35, both guide members 34 , 35 cannot move any more and stop, but at this time, the belt-like member 11 returns to the centering position.
[0015]
The band-shaped member 11 centered in this way passes through the guides 38 and 39, and then is supplied to the rotating drum 14 and attached to the outer periphery thereof. At this time, in the longitudinal direction inside the band-shaped member 11 An inclined cord 12 is embedded and a gap exists between the centering device 16 and the drum 14, for example, the extended surface of the belt-like member 11 during centering is a predetermined distance from the tangent to the outer periphery of the drum 14. If they are separated from each other, the band-shaped member 11 is bent and deformed by a slight amount in the width direction, that is, toward the acute angle tip 11a side when passing through the gap. As a result, even if centering is performed on the belt-shaped member 11 as described above, the belt-shaped member 11 is stuck to the drum 14 in a shifted state. Therefore, before starting the affixing operation, the screw member 50 is appropriately rotated to move the base 18 and the guide members 34 and 35 to the positions where the above-described deviation is anticipated and then stopped, and the belt-like member 11 is moved to the desired position of the drum 14. Make sure to stick it exactly to the position.
[0016]
Further, when the belt-like member 11 passes between the guide members 34 and 35 at a high speed, the external force applied from the belt-like member 11 to the guide members 34 and 35 becomes large. The belt-like member 11 may move rapidly so as to pick up the irregularities on the side in the width direction, and the groove width W of the circumferential grooves 22 and 23 is 0.2 to 0.8 mm to the diameter d of the linear body 24 as described above. If the side surface of the circumferential grooves 22 and 23 is roughened, a large frictional resistance is generated between the side surfaces of the circumferential grooves 22 and 23 and the linear body 24. The travel of the body 24, in other words, the movement of the guide members 34 and 35 is restricted, and thereby the unnecessary jumping as described above is suppressed, and the centering accuracy is improved.
[0017]
【The invention's effect】
As described above, according to the present invention, it is possible to prevent the linear body from being detached from the circumferential groove, and the work efficiency is improved.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of the present invention.
FIG. 2 is a front view thereof.
3 is a cross-sectional view taken along arrows II in FIG.
4 is a cross-sectional view taken along the line II-II in FIG.
[Explanation of symbols]
11 ... Strip member 12 ... Cord
16 ... Centering device 18 ... Base
19, 20 ... pulley 22, 23 ... circumferential groove
24… Linear body 34, 35… Guide member
46 ... Moving means 53 ... Adjusting means W ... Groove width d ... Diameter

Claims (4)

A base extending in the width direction of the belt-like member, a pair of pulleys rotatably supported at both longitudinal ends of the base and having circumferential grooves formed on the outer periphery, and a base between these pulleys moving in the longitudinal direction of the base A pair of guide members that are supported so as to be able to engage with both ends in the width direction of the belt-like member, and are stretched between the pulleys with a part inserted in a circumferential groove of the pulley, An endless linear body in which one side of a straight line connecting the rotation axes of the two is connected to one guide member and the other side is connected to the other guide member, and a moving unit that moves the guide members in a direction to approach each other, When the belt-shaped member passing between the pair of guide members is displaced in the width direction and any one of the guide members is pressed and moved away from the remaining guide members, the moving means is any of the guide members. Centering device of the belt-shaped member, characterized in that so as to return the belt-shaped member is moved so as to approach the rest of the guide member in the centering position with the belt-shaped member. 2. The centering device for a belt-like member according to claim 1, wherein the circumferential width groove of the pulley is 0.2 to 0.8 mm larger than the diameter of the linear body. The centering device for a belt-shaped member according to claim 1, wherein a side surface of the circumferential groove of the pulley is a rough surface. The base is movable in the longitudinal direction, and an adjusting means for adjusting the stop position of the base is provided. When a belt-like member in which a cord inclined in the longitudinal direction is embedded is attached to the drum, The centering device for a belt-like member according to claim 1, wherein the position of the belt-like member in the width direction with respect to the drum is adjusted.

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