JPH05254641A - Transport direction changing device for work - Google Patents

Abstract

PURPOSE:To reduce the dimension of the whole device by suppressing the increase of the dimension of an actuator by forming the contact surface of a carrying-out cam roller so that the distance from the rotary shaft gradually increases. CONSTITUTION:When a work W is transported to a direction changing station 10 through the peripheral surfaces of transport rollers 11, 11,... and the peripheral surfaces of free rollers 13, 13,..., the shift of the work W to the Y direction for the approach to a roller conveyor 30 is started by the turning forces of the carrying-out cam rollers 12, 12,.... In this initial state, the cam roller 12 operates on the work W through the part in close to the axis center of a rotary shaft 12a, and drive can be carried out by a sufficiently small torque. Further, when each revolution of the cam rollers 12, 12,... proceeds, the work W is separated and transported from the upper part peripheral surfaces 11b, 11b,... of the rollers 11, 11,... and the part where the distance from the axis center of the rotary shaft 12a of each cam roller 12 becomes equal to an arcuate peripheral surface CaF acts on the work W. However, since the work W is already in separated state from the peripheral surface of each roller 11, drive is carried out with a small torque.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a work transfer direction changing device which employs a carry-out cam roller to change the transfer direction of a work.

[0002]

2. Description of the Related Art For example, when changing the carrying direction of a work carried by a carrying means such as a roller conveyor, a carrying direction changing device using carrying-out cam rollers 1, 1 ... Is applied as shown in FIG. Has been done.

The carrying-out cam rollers 1, 1 ... Have a substantially half-moon-shaped cross-sectional shape in which a part of the peripheral surface is cut off, and the rotating shafts 1a, 1a. Are inclined, for example, orthogonal to the rotating shafts 3a, 3a of the carry-in rollers 3, 3 ... In the roller conveyor, and their arcuate peripheral surface A projects upward from the peripheral surface of the carry-in rollers 3, 3. Further, the flat peripheral surface B is disposed below the upper peripheral surfaces of the carry-in rollers 3, 3.

In this conveyance direction changing device, as shown in FIG. 9A, the flat peripheral surface B of the carry-out cam rollers 1, 1 ...
, And the peripheral surfaces of the carry-in rollers 3, 3 are brought into contact with the work W, so that the work W is carried in and installed in the direction changing station 2, and thereafter, the work W is installed. ), The carry-out cam rollers 1, 1 ...
Is rotated clockwise in the drawing to bring its arcuate peripheral surface A into contact with the work W installed in the direction changing station 2, and the work W is transferred to the carry-in rollers 3, 3.
While being separated from the peripheral surface of 3 ..., the work W is unloaded from the direction changing station 2 in the orthogonal direction (the arrow Y direction in the drawing) by the rotational force of the unloading cam rollers 1, 1.

[0005]

By the way, in the above-mentioned conveying direction changing device, as shown in FIG. 9 (b),
The portion of the carry-out cam rollers 1, 1 ... that comes into contact with the work W first is the line of intersection D between the flat peripheral surface B and the arcuate peripheral surface A, that is, from the rotation shafts 1a, 1a. Since the cam rollers 1, 1 ... Abut against the work W at a position separated by a radius a, the carry-out cam rollers 1, 1 ... Must be driven with an extremely large torque in the initial state of the direction change. The size of the actuator (not shown) for driving 1, 1, ...
It becomes difficult to reduce the size of the entire device.

Further, since the intersection line D between the flat peripheral surface B and the arcuate peripheral surface A, which is the contacting portion with the work W, is formed in a ridge shape, when the work W is a heavy object, the direction change is caused. In the initial state, the intersection line D or the work W may be damaged.

A first object of the present invention is to provide a work transfer direction changing device which can be miniaturized.

A second object of the present invention is to provide a work transfer direction changing device capable of preventing damage to the carry-out cam roller and the work as much as possible.

[0009]

According to a first aspect of the present invention, there is provided a work transfer direction changing device for transferring a work carried into a conversion station from the conversion station in a direction inclined with respect to the carry-in direction. And a carry-in roller that is rotatably disposed in the conversion station and that carries in and installs a work into the conversion station through the peripheral surface thereof, and has a contact surface and a non-contact surface on the periphery thereof. In the lower region of the work installed in the conversion station, the rotation axis is inclined with respect to the rotation axis of the carry-in roller, the contact surface projects above the peripheral surface of the carry-in roller, and A carry-out cam roller arranged such that the non-contact surface is occupied below the upper peripheral surface of the carry-in roller, and the peripheral surface of the carry-out cam roller is lower than the upper peripheral surface of the carry-in roller. In this state, the peripheral surface of the carry-in roller is brought into contact with the work to carry the work into the conversion station, and then the carry-out cam roller is rotated to move the contact surface to the conversion station. In a work transfer direction changing device, which is brought into contact with an installed work, separates the work from the peripheral surface of the carry-in roller, and carries out the work from the conversion station by the rotational force of the carry-out cam roller, The contact surface of the carry-out cam roller is
The distance from the rotation axis gradually increases in the rotation direction.

A work transfer direction changing device according to a second aspect of the present invention is applied when a work carried in to a conversion station is carried out from the conversion station in a direction inclined with respect to the carrying-in direction. The transfer roller is rotatably arranged in the station and has a peripheral surface thereof to carry in and set a work into the conversion station, and has a contact surface and a non-contact surface at its periphery and is installed in the conversion station. In the lower region of the work, the rotation axis is inclined with respect to the rotation axis of the carry-in roller, the contact surface projects above the peripheral surface of the carry-in roller, and the non-contact surface is A carry-out cam roller disposed below the upper peripheral surface of the carry-in roller, and the peripheral surface of the carry-out cam roller is positioned below the upper peripheral surface of the carry-in roller. In this state, the peripheral surface of the carry-in roller is brought into contact with the work to carry the work into the conversion station, and then the carry-out cam roller is rotated to cause the contact surface to be installed in the conversion station. In the work transfer direction changing device, the work is moved away from the peripheral surface of the carry-in roller, and the work is carried out from the conversion station by the rotational force of the carry-out cam roller. The rotation shaft is arranged in the peripheral portion in a manner along the rotation shaft of the carry-out cam roller, and immediately before the contact surface of the carry-out cam roller comes into contact with the work set in the conversion station, the peripheral surface thereof is A sub-roller that contacts the work is provided.

[0011]

In the first invention, the contact surface of the carry-out cam roller is
The work is sequentially brought into contact with the work from the portion closest to the axis of the rotation shaft.

In the second aspect of the invention, in the initial state of the direction change, the carry-out cam roller acts on the work through the peripheral surface of the sub roller.

[0013]

The present invention will be described in detail below with reference to the drawings illustrating the embodiments. FIG. 1 and FIG. 3 conceptually show a work transfer direction changing device according to the first invention. The transfer direction changing device exemplified here has a transfer direction of the work W of 90 ° in the roller conveyor line RCL1.
It is applied when changing, and it has multiple frames F1,
F2 ... In the conversion station 10 formed in a rectangular frame shape slightly larger than the work W, a plurality of carry-in rollers 11, 11, ...
... A plurality of pairs of carry-out cam rollers 1 arranged one by one between
2, 12, ...

The carrying-in rollers 11, 11 ... Have a cylindrical shape extending in a substantially horizontal direction, and each of the rotating shafts 1 has a cylindrical shape.
Are arranged in parallel with each other in such a manner that the peripheral surfaces thereof have the same height via 1a, 11a. Although not shown in the drawing, the rotation shafts 11a of the carry-in rollers 11 are not shown.
A drive actuator is associated with each of the.
Further, on the upper surfaces of the frames F2 and F4 located at both ends of the carry-in rollers 11, 11, ..., the respective upper peripheral surfaces thereof are at the same height as the upper peripheral surfaces 11b, 11b ... Of the carry-in rollers 11, 11. The carry-in rollers 11, 11 ...
Free rollers 13, 13 ... Which rotate in the same direction as the above are arranged.

As shown in FIG. 2, the carry-out cam roller 12 has a tangent line Lc at an arbitrary point h on a circle Cc having a radius c centered on the axis of the rotary shaft 12a and the rotary shaft 1 as shown in FIG.
The tangent line Lb at the left side intersection point i with the tangent line Lc on the circle Cb having the radius b (b> c) centered on the axis center of 2a and the radius a ( a> b) has a cross-sectional shape surrounded by an arc Ca and has a long side flat peripheral surface (non-contact surface) Lc having different lengths at its peripheral edge.
F and a short side flat peripheral surface (contact surface) LbF and an arcuate peripheral surface (contact surface) CaF are configured, and each rotary shaft 1
2a, 12a ... Are orthogonal to the rotary shafts 11a, 11a ... Of the carry-in rollers 11, 11 ... And the individual rotary shafts 12a, 12a ... Are provided on the upper peripheral surface 11b of the carry-in rollers 11, 11. .. are arranged in the same phase with each other at a distance d (b>d> c) downward from 11b. A drive actuator (not shown) is also linked to the rotary shaft 12a of each of the carry-out cam rollers 12.

As shown in FIGS. 1 and 3, a first roller conveyor 20 is connected to the conversion station 10 having the above-described structure in an extension area of the carry-in rollers 11, 11 ... On the right side, that is, as shown in FIG. 1, when the arcuate peripheral surfaces CaF, CaF of the carry-out cam rollers 12, 12, ... Are directed to the lower side of the rotary shafts 12a, 12a. , LcF ..., The second roller conveyor 30 is connected to the side adjacent to the first roller conveyor 20 in a manner orthogonal to the first roller conveyor 20.

As shown in FIG. 3, the first roller conveyor 20 is arranged substantially horizontally between a pair of tracks 21 and 21 arranged parallel to each other in a substantially horizontal direction, and each rotary shaft is individually rotated. 22a, 22a ... A plurality of first transport drive rollers 22, 22 ...
, And a plurality of free rollers 23, 23, ... Arranged at corresponding positions on the tracks 21, 21. As shown in FIG.
Upper peripheral surfaces of 2, 22 ... and free rollers 23, 23 ...
Are connected to the conversion station 10 in such a manner that their upper peripheral surfaces have substantially the same height as the upper peripheral surfaces 11b, 11b ... Of the carry-in rollers 11, 11 ,.

The second roller conveyor 30 is arranged substantially horizontally between a pair of tracks 31, 31 which are arranged parallel to each other in a substantially horizontal direction, and is shown on each of the rotating shafts 32a, 32a. A plurality of second transport drive rollers 32, 32 ...
The upper peripheral surfaces of the transport drive rollers 32, 32 ... Are connected to the conversion station 10 in such a manner that they are higher than the axis of the rotary shafts 12a, 12a ... ing.

Although not shown in the drawing, the frame F3 and F4 of the conversion station 10 to which the roller conveyors 20 and 30 are not connected are provided with fixed stopper members projecting upward on their respective upper surfaces. There is.

In the roller conveyor line RCL1 constructed as described above, as shown in FIG. 1 (a), the carry-out cam rollers 12, 12 ...
Is in a standby state in which the long side flat peripheral surfaces LcF, LcF ... Are stopped upward.

At this time, as described above, the distance c from the axis of the rotary shaft 12a of each of the carry-out cam rollers 12 to the long side flat peripheral surface LcF and the upper circumference of each of the carry-in rollers 11 from the axis. The relationship with the distance d to the surface 11b is c <
Therefore, in the conversion station 10,
As shown in FIG. 1A, the peripheral surfaces of the carry-in rollers 11, 11 ... And the peripheral surfaces of the free rollers 13, 13 ...

Therefore, from this standby state, the carry-in roller 11,
If the workpieces W transported on the first roller conveyor 20 are rotated by rotating the transport rollers 11, 11, ...
3 and the free rollers 13, 13 ... Are carried into the conversion station 10 through the peripheral surfaces thereof, and further come into contact with a stopper member (not shown), so that the number 2 in FIG.
The work W is installed at a predetermined position on the conversion station 10, as indicated by a dotted line. As is clear from the figure, when the work W is installed at a predetermined position of the conversion station 10, the carry-out cam rollers 12, 12 ... Are arranged in the lower region of the work W, respectively.

By a position detecting means (not shown), the first
When it is confirmed that the work W conveyed by the roller conveyor 20 has been loaded and installed at a predetermined position of the conversion station 10, the drive actuators (not shown) of the delivery cam rollers 12, 12 ... The cam rollers 12, 12, ... Are each rotated clockwise in FIG.

As the carry-out cam rollers 12, 12 ... Rotate, the intersection line iL between the long-side flat peripheral surface LcF and the short-side flat peripheral surface LbF eventually becomes as shown in FIG. 1B. Upper peripheral surfaces 11b, 11b of the carry-in rollers 11, 11 ...
From above and abutting on the bottom surface of the work W, the work W is supported by the upper peripheral surfaces 11b, 11 of the carry-in rollers 11, 11.
While being moved away from b ... to a distance (b-d),
The movement of the work W in the direction approaching the second roller conveyor 30 (the direction of arrow Y in the figure) is started by the rotational force of the carry-out cam rollers 12, 12.

In the initial state of this direction change, since the carry-out cam roller 12 acts on the work W through a portion closer to the axial center of the rotating shaft 12a than a portion with which the arcuate peripheral surface CaF abuts, the carry-out cam roller 12 first acts. Therefore, it can be driven with a sufficiently small torque as compared with the case where the arcuate peripheral surface CaF acts on the work W.

Further, the carry-out cam rollers 12, 12 ...
1C, as shown in FIG. 1C, the intersection line jL of each short side flat peripheral surface LbF and the arcuate peripheral surface CaF sequentially has an upper peripheral surface 11b, 11b of the carry-in rollers 11, 11 ...
From above, the work W is brought into contact with the bottom surface of the work W, and the work W is brought into contact with the bottom surface of the carry-in rollers 11, 11 ...
1b ... is moved to a distance (a-d).

In this case, each of the carry-out cam rollers 12 has an intersection line jL between each short side flat peripheral surface LbF and the arcuate peripheral surface CaF, that is, a distance from the axis of the rotating shaft 12a is the arcuate peripheral surface CaF. The same portion acts on the work W, but the work W has already been transferred to the carry-in rollers 11, 11.
Since it comes into contact with the work W at a portion that is separated from the peripheral surface of the ... And comes close to the axis of the rotating shaft 12a,
It can be driven with a sufficiently small torque.

In the above state, the bottom surface of the work W has the second conveyance drive roller 3 in the second roller conveyor 30.
Since it is arranged at the same height as the upper peripheral surface of 2, 32 ...
If the rotation of the carry-out cam rollers 12, 12, ... Further progresses, as shown in FIG. 1D, the work W on the conversion station 10 is carried out to the second roller conveyor 30, and the second carrying drive roller is further carried out. The work W is sequentially conveyed downward by the rotation of 32, 32, ....

In the conveying direction changing device shown in FIGS. 1 to 3, by forming two long and short flat peripheral surfaces LcF and LbF on the peripheral surface of the carry-out cam roller 12, the axis of the rotary shaft 12a is removed. The surfaces LcF and CaF that come into contact with the work W are formed so as to gradually increase in the rotation direction, but as shown in FIGS. 4A and 4B, the surfaces that do not come into contact with the work W are formed. The discharge cam roller may be connected to the arcuate peripheral surface by a curved surface such as an involute or Archimedes spiral that gradually increases in the rotation direction from the axis of the rotation shaft.

That is, in the carry-out cam roller 42 shown in FIG. 4A, a semi-circular arc Ca having a radius a centering on the axis of the rotating shaft 42a and a radius centering on the axis of the rotating shaft 42a. The semi-circular arc Ca on the circle Cc of c (c <a)
Tangential line kF from the upper side intersection point k of the line CaL connecting both ends Ca1 and Ca2 of the rotation axis 42a to the semicircular arc Ca and the intersection point k as the starting point, and the rotation axis 42a of the rotation axis 42a toward the lower end Ca2 of the semicircular arc Ca. It has a cross-sectional shape surrounded by an involute IV (or an Archimedes spiral) whose distance from the axis gradually increases, and a flat peripheral surface (non-contact surface) L is formed on the periphery thereof.
kF and an arcuate peripheral surface (contact surface) IVF are configured,
Further, in the carry-out cam roller 52 shown in FIG.
A semi-circular arc Ca of radius a centered on the axis of the rotating shaft 52a
And a radius c (c <c <
Both ends Ca1 of the semicircular arc Ca on the circle Cc in a),
Tangent line Ll at the upper intersection point l of the line CaL connecting Ca2
And a left side intersection point m on the tangent line Ll at which the distance from the axis of the rotating shaft 52a is b (c <b <a) is set as a starting point, and the above-mentioned rotation is performed toward the lower end Ca2 of the semi-circular arc Ca. It has a cross-sectional shape surrounded by an Archimedes spiral AM (or involute) whose distance from the axis of the moving shaft 52a gradually increases, and a flat peripheral surface (non-contact surface) Ll is formed on the periphery thereof.
F and an arcuate peripheral surface (contact surface) AMF are configured.

Even when the carry-out conversion rollers 42 and 52 shown in FIGS. 4 (a) and 4 (b) are adopted, the contact surfaces IVF and AMF of the respective contact surfaces IVF and AMF are different from each other.
Since the portions closest to the axes of a and 52a are brought into contact with the work W in order, the semi-circular arc Ca is initially placed on the work W
Can be applied to the work W with a torque sufficiently smaller than that in the case of

Moreover, since the operation of separating the work W from the upper peripheral surfaces 11b, 11b ... Of the carry-in rollers 11, 11 ... Is made extremely smooth, it is possible to change the direction of the work W which is weak against vibration.

FIG. 5 conceptually shows a work transfer direction changing device according to the second invention. The conveying direction changing device illustrated here is similar to the conveying direction changing device shown in FIGS. 1 to 3 in the roller conveyor line R.
This is applied when changing the carrying direction of the work W in CL2 by 90 °, and is different from the previous carrying direction changing device only in the configuration of the carry-out converting roller 62. For this reason,
The same components as those in the transport direction changing device shown in FIGS. 1 to 3 are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIGS. 6 and 7, the carry-out cam roller 62 applied to this carrying-direction changing device has the same cross-sectional shape as the carry-out cam roller 12 shown in FIG. Different long side flat peripheral surfaces LcF and short side flat peripheral surfaces LbF and arcuate peripheral surface CaF are configured, and the intersections of these long side flat peripheral surfaces LcF and short side flat peripheral surfaces LbF. The concave portion 62b formed in the
The sub-roller 63 is provided inside, and each rotation shaft 62a
The rotating shafts 11a, 11a of the carry-in rollers 11, 11 ...
Are orthogonal to each other, and the individual rotation shafts 62a are in phase with each other at a position at a distance d (b>d> c) downward from the upper peripheral surfaces 11b, 11b of the carry-in rollers 11, 11. Are arranged in a manner.

The sub roller 63 is the delivery cam roller 6 described above.
It has a cylindrical shape that is sufficiently smaller than 2, and its peripheral surface 63
b is projected slightly outward from the short side flat peripheral surface LbF, and its rotation shaft 63a is rotatable with respect to the discharge cam roller 62 in a manner along the rotation shaft 62a of the discharge cam roller 62. It is arranged. A drive actuator (not shown) is linked to the rotary shaft 62a of each of the carry-out cam rollers 62.

Also in the roller conveyor line RCL2 constructed as described above, as shown in FIG. 5A, each carry-out cam roller 62 of the conversion station 60 stops with its long side flat peripheral surface LcF facing upward. The state that has been done is the standby state.

At this time, the long side flat peripheral surface LcF from the axis of the rotating shaft 62a in each of the carry-out cam rollers 62 is set.
To the upper peripheral surface 11b of each of the carry-in rollers 11 is c <d. Therefore, in the conversion station 60, the carry-in rollers 11,
The peripheral surfaces of 11 ... and the peripheral surfaces of the free rollers 13, 13 ...

Therefore, when the carry-in rollers 11, 11, ... Are rotated by a drive actuator (not shown), the work W conveyed on the first roller conveyor 20 and the peripheral surfaces of the carry-in rollers 11, 11 ,. It is carried into the conversion station 60 through the peripheral surfaces of the free rollers 13, 13 ... And further comes into contact with a stopper member (not shown) to be installed at a predetermined position on the conversion station 60.

By a position detecting means (not shown), the first
When it is confirmed that the work W conveyed by the roller conveyor 20 has been loaded and installed at a predetermined position of the conversion station 60, the drive actuators (not shown) of the delivery cam rollers 62, 62 ... The cam rollers 62, 62 ... Are rotated clockwise in FIG. 5, respectively.

As the rotation of the carry-out cam rollers 62, 62 progresses, as shown in FIG. 5 (b), the long-side flat peripheral surface LcF and the short-side flat peripheral surface LbF are arranged at the intersections. The sub rollers 63 project upward from the upper peripheral surfaces 11b, 11b ... Of the carry-in rollers 11, 11 ... And come into contact with the bottom surface of the work W, and the work W is carried in.
Are moved away from the upper peripheral surfaces 11b, 11b ... At this time, the sub roller 6 arranged on each of the carry-out cam rollers 62
When 3 comes into contact with the bottom surface of the work W, it appropriately rotates about its rotation shaft 63a, so that the carry-out cam roller 62
Is not transmitted to the work W, and the work W is not transported.

In the initial state of this direction change, since the carry-out cam roller 62 acts on the work W via the peripheral surface 63b of each sub-roller 63, even if the work W is heavy, the work W is Also, the carry-out cam roller 62 is not damaged. Moreover, since the carry-out cam roller 62 acts on the work W via the portion closer to the axis of the rotating shaft 62a than the portion on which the arc-shaped circumferential surface CaF abuts, the arc-shaped circumferential surface CaF acts on the work W from the beginning. It can be driven with a sufficiently small torque as compared with the case.

Further, the carry-out cam rollers 62, 62 ...
5C, as shown in FIG. 5C, the line jL of intersection between each short-side flat peripheral surface LbF and the arcuate peripheral surface CaF sequentially has the upper peripheral surfaces 11b, 11b of the carry-in rollers 11, 11 ...
From above, the work W is brought into contact with the bottom surface of the work W, and the work W is brought into contact with the bottom surface of the carry-in rollers 11, 11 ...
1b ... is separated from the work W by a distance (a-d), and the rotational force is transmitted to the work W in the direction of approaching the second roller conveyor 30 of the work W (direction of arrow Y in the figure). The movement starts.

In this case, in each of the carry-out cam rollers 62, the intersection line jL of the short side flat peripheral surface LbF and the arcuate peripheral surface CaF, that is, the distance from the axis of the rotating shaft 62a is the arcuate peripheral surface CaF. Although the same portion acts on the work W, the work W has already been transferred to the carry-in rollers 11, 1.
Since it comes into contact with the work W at a portion that is separated from the peripheral surface of 1 ... and is close to the axis of the rotating shaft 62a, it is possible to drive with a sufficiently small torque.

In the above state, the bottom surface of the work W has the second conveyance drive roller 3 on the second roller conveyor 30.
Since it is arranged at the same height as the upper peripheral surface of 2, 32 ...
As the rotation of the carry-out cam rollers 62, 62 ... Further progresses, the work W on the conversion station 60 is carried out to the second roller conveyor 30 as shown in FIG. The work W is sequentially conveyed downward by the rotation of 32, 32, ....

In the carrying direction changing device shown in FIG. 5, the carrying-out cam roller 62, in which the sub roller 63 is disposed, is illustrated as the carrying-out cam roller 12 applied in the preceding carrying direction changing device shown in FIGS. However, Fig. 8 (a)
As shown in FIG. 4, the carry-out cam roller 42 shown in FIG.
As shown in FIG. 8B, the carry-out cam roller 72 in which the sub-roller 63 is arranged in the same shape as the one shown in FIG. 8B and the carry-out cam roller 52 having the same shape as the carry-out cam roller 52 shown in FIG.
The carry-out cam roller 82 provided with 3 may be applied,
Further, it is also possible to apply a discharge cam roller (not shown) in which the sub roller 63 is arranged to the conventional discharge cam roller 1 shown in FIG.

Even when the carry-out conversion rollers 72 and 82 shown in FIGS. 8A and 8B are adopted, the peripheral surface 63 of each sub-roller 63 is in the initial state of the direction change.
Since the carry-out cam rollers 72 and 82 act on the work W via b, even if the work W is a heavy object, the work W and the carry-out cam rollers 72 and 82 are not damaged.

Further, the respective contact surfaces IVF and AMF
However, since the workpiece W is sequentially contacted with the work W from the portion closest to the axis of each of the rotating shafts 72a and 82a, the work W is applied to the work W with a torque sufficiently smaller than that in the case where the semicircular arc acts on the work W from the beginning. Can be operated.

Further, since the operation of separating the work W from the upper peripheral surfaces 11b, 11b ... Of the carry-in rollers 11, 11 ... Is made extremely smooth, it is possible to change the direction of the work W which is weak against vibration.

In the above embodiment, the transfer direction changing device applied when changing the transfer direction of the work W in each of the roller conveyor lines RCL1 and RCL2 constituted by the first and second roller conveyors 30 is exemplified. However, it can be applied to other floor conveyors such as belt conveyors. Further, although the conveying direction of the work W is changed by 90 °, it is possible to carry out the work in a direction other than 90 ° by appropriately changing the arrangement mode of the carry-out cam roller.

[0050]

As described above, according to the workpiece conveying direction changing device of the first aspect of the invention, the contact surface of the carry-out cam roller is sequentially arranged from the portion closest to the axis of the rotating shaft. Since it is brought into contact with the carrying-out cam roller, the driving torque of the carry-out cam roller can be reduced. Therefore, the actuator that drives the carry-out cam roller can be downsized, and thus the entire device can be downsized.

Further, according to the conveyance direction changing device of the second aspect of the present invention, in the initial state of the direction change, the carry-out cam roller is made to act on the work through the peripheral surface of the sub-roller. Also in this case, it is possible to prevent damage to the work and the carry-out cam roller as much as possible.

[Brief description of drawings]

FIG. 1A to FIG. 1D are conceptual side views sequentially showing an operation of a work transfer direction changing device according to a first aspect of the present invention.

FIG. 2 is an enlarged view conceptually showing a carry-out cam roller applied to the workpiece conveying direction changing device according to the first invention.

FIG. 3 is a plan view conceptually showing the work transfer direction changing device according to the first invention.

FIG. 4A and FIG. 4B are conceptual views showing a modified example of a carry-out cam roller applied to the work carrying direction changing device according to the first invention.

5 (a) to 5 (d) are conceptual side views sequentially showing the operation of the work transfer direction changing device according to the second invention.

FIG. 6 is an enlarged view conceptually showing a carry-out cam roller that is applied to the workpiece conveying direction changing device according to the second aspect of the invention.

FIG. 7 is a plan view thereof.

FIG. 8A and FIG. 8B are conceptual diagrams showing a modified example of a carry-out cam roller that is applied to the workpiece carrying direction changing device according to the second invention.

9 (a) to 9 (c) are conceptual side views sequentially showing the operation of a conventional workpiece transfer direction changing device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Conversion station 11 ... Carry-in roller 11a ... The rotating shaft 11b ... The upper peripheral surface 12, 42, 52, 62, 72, 82 ... Carry-out cam roller 12a, 42a, 52a, 62a, 72a, 82a ... The rotating shaft. 63 ... Sub-roller 63a ... Its rotation shaft 63b ... Its peripheral surface LbF, CaF, IVF, AMF ... Contact surface LcF, LkF, L1F ... Non-contact surface W ... Work

Claims (2)

[Claims] 1. It is applied when a work carried in to a conversion station is carried out from the conversion station in a direction inclined with respect to the carrying-in direction, and is rotatably disposed on the conversion station and has a peripheral surface thereof. A carry-in roller for carrying in and installing a work through the conversion station, and a contact surface and a non-contact surface at the periphery of the carry-in roller. Inclining with respect to the rotation axis of the carry-in roller, the contact surface projects above the peripheral surface of the carry-in roller,
And a carry-out cam roller disposed in such a manner that the non-contact surface is occupied below the upper peripheral surface of the carry-in roller, and the peripheral surface of the carry-out cam roller is more than the upper peripheral surface of the carry-in roller. With the peripheral surface of the carry-in roller brought into contact with the work in the state of being positioned below, the work is carried in and installed in the conversion station, and then the carry-out cam roller is rotated to bring the contact surface into the conversion station. In a work transfer direction changing device, the work transfer direction changing device is configured to abut against a work installed on the work transfer roller so as to separate the work from the peripheral surface of the carry-in roller and to carry out the work from the conversion station by the rotational force of the carry-out cam roller. The contact surface of the carry-out cam roller is formed in such a manner that the distance from the rotation shaft gradually increases in the rotation direction. A device for changing the conveying direction of the target work. 2. The method is applied when a work carried in to a conversion station is carried out from the conversion station in a direction inclined with respect to the carrying-in direction, and is rotatably arranged on the conversion station and has a peripheral surface thereof. A carry-in roller for carrying in and installing a work through the conversion station, and a contact surface and a non-contact surface at the periphery of the carry-in roller. Inclining with respect to the rotation axis of the carry-in roller, the contact surface projects above the peripheral surface of the carry-in roller,
And a carry-out cam roller disposed in such a manner that the non-contact surface is occupied below the upper peripheral surface of the carry-in roller, and the peripheral surface of the carry-out cam roller is more than the upper peripheral surface of the carry-in roller. With the peripheral surface of the carry-in roller brought into contact with the work in the state of being positioned below, the work is carried in and installed in the conversion station, and then the carry-out cam roller is rotated to bring the contact surface into the conversion station. In a work transfer direction changing device, the work transfer direction changing device is configured to abut against a work installed on the work transfer roller so as to separate the work from the peripheral surface of the carry-in roller and to carry out the work from the conversion station by the rotational force of the carry-out cam roller. The rotation shaft of the discharge cam roller is arranged along the rotation shaft of the discharge cam roller at the peripheral portion of the discharge cam roller. A conveying direction changing device for a work, comprising a sub-roller whose peripheral surface is in contact with the work immediately before the contact surface of the roller contacts the work installed in the conversion station.