JP2003191309A - Carrying device of elongated material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce various malfunctions due to a positional slippage and to conduct stable carriage, on the occasion of carrying a elongated material. <P>SOLUTION: An accumulator 10 as a carrying device is equipped with a plurality of upper rollers 21-25, lower rollers 31-36, a feed roller 50, etc. At least the feed roller out of them is so shaped as to have a curved surface of which the central portion in the width direction is protuberant and the radius of curvature of the central portion is made larger than that of the end edge portion. On the occasion when an insert 1 as the elongated material is carried by the accumulator 10, it is guided continuously to the subsequent process or the like provided on the downstream side of the accumulator 10, via the rollers 21, 31, 22...36 and 50 sequentially. On the occasion, the insert 1 is always centered by the feed roller 50 and other and thus carried to a prescribed position without the positional slippage. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveying device for conveying a long material while guiding it with rollers.

[0002]

2. Description of the Related Art Conventionally, an accumulator is known as one of devices for conveying a long material. This accumulator is for sending out a long core metal called an insert when extruding a weather strip by an extrusion method to a die for extrusion, or a roll forming device in the preceding stage. is there.

More specifically, for example, as shown in FIG.
The insert 100 is wound in a roll shape, and is guided from the payout end side toward the accumulator 130 via the guide roller 120.
The accumulator 130 includes a housing 132, and an upper support bar 134 and a lower support bar 136 are provided inside the housing 132. A plurality of upper rollers 135 are rotatably supported on the upper support bar 134.
In addition, the lower support bar 136 also includes a plurality of lower rollers 13.
7 is rotatably supported. Then, the feeding end of the insert 100 guided by the accumulator 130 is alternately hooked in the order of the lower roller 137 and the upper roller 135, and is guided from the lower roller 137 to the feeding roller 138 on the downstream side. After that, the insert 100 passing through the payout roller 138 is continuously guided to the extrusion die through a roll forming device or directly.

When the insert 100 is continuously conveyed and the remaining amount of winding becomes small, it is necessary to connect the final end (center end) of the insert 100 and the feeding end of the next insert. At this time, by moving the upper support bar 134 of the accumulator 130 downward, it is possible to increase the time required for connection, and during this, connection work such as welding is performed.

Each of the rollers 135, 137, 138 used in the accumulator 130 generally has a cylindrical roller body and flanges provided on both sides of the roller body (Japanese Patent Publication No. 58379 gazette etc.).

[0006]

However, in the above-mentioned conventional technique, the insert 100 is not always stably conveyed at a predetermined portion (for example, a central portion) in the width direction of the roller body. That is, each roller 135,
There is a possibility that the insert 100 may be displaced toward the end edge side of the roller main body due to a slight deviation of the support angles of 137 and 138, a slight change in tension, or the like. If such a shift in the transport position occurs, when the insert 100 is guided to the roll forming device or the die on the downstream side, accurate guide cannot be performed and, for example, the insert 100 comes into contact with the flange of the roller. However, there is a risk that the roll forming device or the die may come into contact with the roll forming device or cause a defect due to the positional deviation. In addition, the insert 1 hits the flange so that the insert 1
There is also a possibility that a problem such as 00 or the flange being scraped may occur.

In Japanese Utility Model Laid-Open No. 56-116312, there is disclosed a roller in which a flat plate block-shaped convex portion is provided at the center of the main body and the flanges on both sides are frustoconical. However, such a technique still cannot solve the above-mentioned problems. In addition, 59
No. 171923, a conical roller,
It is disclosed that a work is sandwiched and conveyed with a roller having a recess. However, such a technique has a problem that it can be applied only to a long material having a bent portion or the like in the width direction, that is, to a material that can be positioned in some way.

The present invention solves the above-mentioned problems, and when conveying a long material, various troubles due to displacement can be suppressed, and a long material conveying device capable of stable conveyance. To provide.

[0009]

Means for Solving the Problems and Effects of the Invention Means for achieving the above object will be described below. In addition, the action and effect corresponding to each means will be mentioned as needed.

Means 1. A transporting device, comprising at least one roller rotatably supported, for transporting a long material while guiding it with a main body of the roller, wherein the main body of the roller has a convex center portion in the width direction. An apparatus for conveying a long material, which has a curved surface shape, and is capable of centering the long material at a central portion in the width direction of the roller at all times.

According to the means 1, the main body of the roller provided in the conveying device has a convex surface curved shape at the center in the width direction. Therefore, when the roller rotates, the peripheral speeds of the central portion and the edge are different, and the long material is always subjected to the moving stress to the central portion where the conveying speed is high. Therefore, since the long material is always in the centered state, a stable conveyance state can be obtained and it is possible to suppress the occurrence of troubles due to the positional deviation and the like.

Means 2. A first roller or a first roller group rotatably supported by the first support means, and a second roller or a second roller group rotatably supported by the second support means, A transporting device for transporting a long material while guiding it by the main body of each of the rollers, the first roller or the second roller, or one of the first roller group and the second roller group. The main body of at least one roller has a convex surface curved shape in the widthwise central portion thereof, and the long member can always be centered on the widthwise central portion of the roller. Conveyor for scale material.

According to the means 2, by the plurality of rollers,
The long material is stably transported. Then, at least one of these rollers has a convex curved shape in the center portion in the width direction. Therefore, when the long material is guided by the roller, it is centered and conveyed. That is, the long material is conveyed in a stable state and centered by the roller having the curved surface shape. As a result, it is possible to prevent the occurrence of misalignment and the like at the time of conveyance, and to suppress the occurrence of troubles.

Means 3. 3. The apparatus for conveying a long material according to means 2, wherein at least the roller supported on the most downstream side has a central portion in the width direction of its main body which has a convex surface curved shape.

According to the means 3, the central portion in the width direction of the roller supported on the most downstream side of the conveying device has a convex surface curved shape. Therefore, the long material is centered on the most downstream side of the conveying device. Therefore, for example, when a long material is conveyed to the next step, such as devices and mechanical parts provided on the downstream side of the conveying device, the long material is more surely moved to a predetermined position while being centered. Will be transported to. As a result, the occurrence of defects in the next process can be suppressed.

Means 4. Supported at least on the most downstream side,
3. The long material conveying device according to means 2, characterized in that, with respect to the three rollers that are not on the same straight line, the central portion in the width direction of the main body has a convex surface curved shape.

According to the means 4, at least the three rollers supported on the most downstream side have the center portion in the width direction of the main body portion having a convex surface curved shape. Therefore, for example, even if the displacement occurs on the upstream side of the roller, the long material is surely centered on the most downstream side. Moreover, since these rollers are supported at positions that are not on the same straight line, the area where the long material contacts the rollers becomes wider. Therefore, the long material can be surely centered.

Means 5. At least one of the first supporting means and the second supporting means is movable in a contacting / separating direction with respect to the other, of the long member according to any one of the means 2 to 4. Transport device.

According to the means 5, at least one of the first and second supporting means provided in the conveying device is movable in the contact direction with respect to the other. Therefore, for example, when the supporting means moves closer, the distance between the first and second supporting means becomes narrower than that before the movement. Therefore, even while the long material is continuously led out to the downstream side, the long material is guided to the supporting means at least temporarily on the upstream side of the first and second supporting means. It can be slowed or stopped. Therefore, it is possible to increase the time for adding a long material or performing other processes during the state.

Means 6. All the rollers have a body part,
6. The apparatus for conveying a long material according to any one of means 1 to 5, further comprising: flange portions provided on both sides of the main body portion.

According to the means 6, the flanges provided on both sides of the main body of the roller can prevent the trouble that the long material comes off the roller. Also, if it is conventional,
There is a possibility that the long material may hit the flange and be scraped due to the occurrence of displacement or the like. On the other hand, according to this means, since the long material is stably conveyed while being centered, it is possible to suppress a problem that the long material abuts against the flange and is scraped.

Means 7. The curvature radius of the center portion of the width direction cross section of the body portion of the roller, in which the width direction center portion of the body portion has a convex surface curved shape, is larger than the curvature radius of the width direction end edge portion. 7. The long material transporting device according to any one of 1 to 6.

According to the means 7, the radius of curvature of the central portion of the main body of the roller is larger than the radius of curvature of the edge portion. Therefore, the long material is centered more quickly in the central portion where the conveying speed is high.

Means 8. 8. The long material conveying device according to any one of means 1 to 7, wherein the long material is a strip-shaped metal insert.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment will be described below in detail with reference to the drawings. In addition, in the present embodiment, a transport device used when manufacturing (extrusion molding) a weather strip provided on the periphery of a door of an automobile or the like will be described as a specific example.

In extrusion molding, as is well known, a long weather strip is obtained based on the extrusion of unvulcanized rubber from a die not shown. During such extrusion, a metal insert is embedded. That is, the insert is continuously guided and extruded from the die in accordance with the extrusion of the unvulcanized rubber.

Initially, the insert is supported in a rolled state on the upstream side of the die. An accumulator 10 as a transfer device shown in FIG. 1 and a roll forming device (not shown) are provided between the insert supported in a roll shape and the die. As described in the above-mentioned related art, the accumulator 10 conveys and guides the insert 1 to the downstream side, and in order to gain time to connect the final end of the insert 1 and the payout end of the insert 1 ′ prepared separately. It has the function of. Further, the roll forming device has a function of guiding the insert 1 continuously guided from the accumulator 10 toward the die and molding (preforming) the cross-sectional shape of the insert 1 into a predetermined shape. .

The accumulator 10 has a housing 12
And an upper support bar 20 as a first support means and a lower support bar 30 as a second support means are provided therein. A plurality of upper rollers 21, 22, 23, 24, 25 are rotatably supported on the upper support bar 20. The lower support bar 30 also rotatably supports a plurality of lower rollers 31, 32, 33, 34, 35, 36. Further, an upstream guide roller 40 is rotatably supported on the upstream side of the housing 12, and a feeding roller 50 is rotatably supported on the downstream side.

The lower support bar 30 is immovably fixed, while the upper support bar 20 is vertically movable. More specifically, the upper support bar 20 is disposed so as to always be located above the housing 12, and moves downward when a predetermined condition is satisfied, and the upper roller 21 is moved in accordance with this. ~ 25 also moves downward all at once.

Further, the feeding end of the insert 1 passes through the upstream guide roller 40 and is alternately applied in the order of the lower roller 31, the upper roller 21, the lower roller 32, the upper roller 22, ... The lower roller 36 on the side is guided to the feeding roller 50. afterwards,
The insert 1 that has passed through the feeding roller 50 is continuously guided to the roll forming device.

The insert 1 is continuously conveyed,
When the remaining amount of winding becomes small (corresponding to the above-mentioned predetermined condition), the final end of the insert 1 and the next insert 1 '
It is necessary to connect with the feeding end of. At this time, by moving the upper support bar 20 downward, it is possible to increase the time required for connection, and during this time, connection work such as welding is performed (enlarged part "A" in FIG. 1). See figure).

Next, the structure of each roller used in the accumulator 10 configured as described above will be described. In the present embodiment, the feeding roller 50,
The lowermost roller 36 on the most downstream side and the uppermost roller 2 on the most downstream side
As shown in FIG. 2, each of the rollers 21 to 24 and 31 to 35 except 5 includes a cylindrical roller main body portion 60 and flanges 61 provided on both sides of the roller main body portion 60.
On the other hand, as shown in FIG. 3, the feeding roller 50, the lowermost roller 36 on the most downstream side, and the uppermost roller 25 on the most downstream side are provided with a roller main body portion 70 having a curved surface shape and both sides thereof. And a flange 71. The roller main body 70 has a curved shape (substantially arcuate shape) in which a central portion of the surface thereof is raised in a convex shape. To describe the curved shape in more detail, the radius of curvature R1 in the central portion in the width direction is the radius of curvature R in the outer portion.
It is configured to be larger than 2 (FIG. 4A).
reference).

Next, the function and effect of the accumulator 10 configured as described above will be described. As described above, the insert 1 passes through the upstream guide roller 40 and then the lower roller 31 and the upper roller 2 in the housing 12.
1, the lower roller 32, the upper roller 22, and the like are alternately conveyed in this order, and the lower roller 31 on the downstream side feeds the roller 5
You will be guided to 0. After that, the insert 1 that has passed through the feeding roller 50 is continuously guided to the roll forming device. At this time, one surface of the insert 1 having a flat plate-shaped cross section has a roller body portion 60, 7 of each roller 31, 21 ,.
It is transported while contacting the surface of 0.

Here, the roller main body 70 of the feeding roller 50, the lowermost roller 36 on the most downstream side, and the uppermost roller 25 on the most downstream side has a curved shape in which the central portion of the surface is convexly raised. That is, each roller 25, 36,
When the roller 50 rotates, the transport speed of the central portion of the roller body 70 becomes faster than the transport speed of the outer portion of the roller main body portion 70 because the diameter is larger. Therefore, as shown in FIG. 4B, the surface of the insert 1 that is in contact with the surface of the roller body 70 is subjected to stress in the direction of the central portion. That is, as long as the insert 1 is in contact with the surface of the roller body portion 70 at a predetermined pressure, the insert 1 is always conveyed while being centered on the central portion, which is the largest diameter portion of the roller body portion 70. It will be. Therefore, the insert 1 can be stably conveyed without causing a positional deviation in the width direction of the rollers 25, 36, 50. As a result, it is possible to prevent various problems such that the roll forming device on the downstream side is not accurately guided due to the positional deviation, or the insert 1 is scraped or damaged by hitting the flange 71. it can.

In particular, in this embodiment, the three rollers 25, 36, 50 on the downstream side of the accumulator 10 have the above-mentioned special shape. In this way, by adopting a special shape for the rollers 25, 36, 50 on the downstream side which are not on the same straight line (not on the same straight line in the height direction in the present embodiment), the insert 1 is guided to the roll forming device. In doing so, it is possible to more reliably lead to the predetermined position. In the above example,
Although it is embodied in the case where it is conveyed alternately in the vertical direction,
It may be embodied when the sheets are conveyed alternately in the horizontal direction.
In this case, it is desirable to arrange three or more rollers that are not collinear in the horizontal direction.

Further, in the present embodiment, the special shape is not adopted for all the rollers, but the special shape is adopted only for the three rollers 25, 36 and 50, so that the cost is significantly increased. Can be suppressed.

Further, in the present embodiment, the radius of curvature R1 at the central portion in the width direction is larger than the radius of curvature R2 at the outer portion, so that even if displacement occurs, the central portion can be swiftly moved. It can be centered towards you.

The embodiment is not limited to the one described above, but may be implemented as follows, for example. Of course, other application examples and modifications not described below are also possible.

(A) In the above embodiment, the accumulator for conveying the weatherstrip insert is embodied, but it may be embodied as a conveying device for other long materials. For example, a transport device for transporting an extruded weather strip, and FIG.
Side molding 8 for an automobile as shown in (a) and (b)
0 is a conveying device for conveying a long material (roller 9
The above technique can also be applied to 0).

(B) All rollers 21 to 25, 31 to 3
The special shapes described above may be adopted for 6, 50. Further, a special shape may be adopted for only one roller (for example, the feeding roller 50).

(C) In the above embodiment, the accumulator 10 having the plurality of rollers 21 to 25, 31 to 36, 50 is embodied, but at least one roller having the above-mentioned special shape is provided. All you have to do is
The number of rollers is not particularly limited.

(D) In the above embodiment, each roller 21
Although no particular reference is made to the driven and driving relationships of .about.25, 31 to 36, 50, any of them may be a driving roller or any of them may be a driven roller.

(E) Accumulator 1 of the above embodiment
In 0, the lower support bar 30 is fixed and the upper support bar 20 is vertically movable, but both may be vertically movable, or the lower support bar 30 is vertically movable. May be.

(F) In some cases, the flanges 61, 7
It is also possible to omit 1.

(G) The accumulator 10 may be directly guided to the die without passing through the roll forming device.

(H) The curvature of the roller body 70 may be constant.

[Brief description of drawings]

FIG. 1 is a schematic side view showing an accumulator according to an embodiment.

FIG. 2 is a front view showing a roller.

FIG. 3 is a front view showing a roller.

4A is an enlarged front view showing the roller of FIG. 3, and FIG. 4B is a partially enlarged sectional view of the roller for explaining the operation.

FIG. 5 is a diagram for explaining another embodiment, which is (a).
[Fig. 3] is a schematic side view of an automobile for explaining a side molding for an automobile, and (b) is a schematic side view showing rollers for carrying the side mall.

FIG. 6 is a schematic side view showing a conventional accumulator.

[Explanation of symbols]

1, 1 '... Insert as a long material, 10 ... Accumulator as a conveying device, 20 ... Upper support bar, 25
... upper roller, 36 ... lower roller, 50 ... feeding roller,
70 ... Roller body, 71 ... Flange.

Claims (6)

[Claims] 1. A transporting device, comprising at least one roller rotatably supported, for transporting a long material while guiding it with a main body of the roller, the main body of the roller having a width thereof. A long material conveying device, wherein a central portion in the direction has a convex curved surface shape, and the long material can always be centered on the central portion in the width direction of the roller. 2. A first roller or a first roller group rotatably supported by a first support means, and a second roller or a second roller rotatably supported by a second support means. And a first roller, a second roller, or a first roller, for conveying the long material while guiding the long material by the main body of each of the rollers.
The main body of at least one of the roller group and the second roller group has a convex surface curved shape in the widthwise central portion thereof, and the long member is always centered in the widthwise central portion of the roller. A long material conveying device characterized by being capable. 3. The long member according to claim 2, wherein at least the roller supported on the most downstream side has a convex surface curved shape in the center portion in the width direction of its main body. Transport device. 4. At least the most downstream side is supported, and
3. The long material conveying device according to claim 2, wherein the center portion in the width direction of the main body of the three rollers that are not on the same straight line has a convex surface curved shape. 5. The method according to claim 2, wherein at least one of the first supporting means and the second supporting means is movable in a contacting / separating direction with respect to the other. Conveying device for the long material described. 6. The long member according to claim 1, wherein all the rollers are provided with a main body portion and flange portions provided on both sides of the main body portion. Transport device.