JP2000025942A - Workpiece positioning conveyor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain stable conveyance and positioning of works by disposing a downstream side conveyer belt narrower than a upstream side conveyer belt on the position supporting the center of gravity of the work, and mounting a work supporting roller conveyor and a work guide without having conveyance driving force on both sides of a downstream conveyor. SOLUTION: This apparatus is formed so that the width of a downstream side conveyer belt 7 is narrower than that of an upstream side conveyer belt 3 may support a section near the center of gravity G of a work 4 and drive it in the direction of conveyance, and both the ends of the work 4 may be supported and guided by low-frictional force roller conveyors 14a, 14b and work guides 11a, 11b. Even if the bottom of the work 4 has a projecting part, the driving force acts on only a section near the center of gravity G of the workpiece 4, and the moment force rotating the work 4 is not generated, thus it is possible to convey the work 4 stably without rotating it when it moves from the upstream side conveyer belt 3 to the downstream side conveyer belt 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor device used for conveying a work in an automated line or the like, and more particularly to a work positioning conveyor for positioning each work before palletizing the work using an industrial robot or the like. It concerns the device.

[0002]

2. Description of the Related Art FIG. 6 shows, for example, Japanese Patent Publication No. 58-2085.
FIG. 2 is a plan view schematically illustrating a main part of a work positioning conveyor device disclosed in Japanese Patent Application Publication No. 2 (JP-A) No. 2 (1994). In the figure, reference numeral 101 denotes an upstream conveyor, which includes a belt driving roller 102;
When the belt driving roller 102 is rotated by a driving device (not shown), the belt driving roller 102 is constituted by an upstream conveyance belt 103 wound around the belt driving roller 102.
The upstream transport belt 103 moves in the direction of the arrow, and the work 104 (workpiece, product, or the like) placed on the upstream transport belt 103 is transported in the direction of the arrow. Similarly, reference numeral 105 denotes a downstream conveyor arranged in series in the conveying direction with respect to the upstream conveyor 101, and includes a belt driving roller 106, a downstream conveying belt 107 wound around the belt driving roller 106, and When the belt driving roller 106 rotates, the downstream transport belt 107 moves in the direction of the arrow, and the work on the downstream transport belt 107 is transported in the direction of the arrow.

[0003] Between the upstream conveyor belt 103 and the downstream conveyor belt 107, there is provided a backstop stopper 108 for temporarily stopping the work 104 on the upstream conveyor belt 103, and at the downstream end of the upstream conveyor 101. Pushers 110a, 110b driven by air cylinders 109a, 109b are installed on the upper side, and the pushers 110a, 110b press the work 104 stopped on the upstream conveyor belt 103 from both sides by a back-cutting stopper 108, so that the work The position of 104 is set in the width direction of the upstream conveyor belt 103 (in the direction perpendicular to the conveyance direction).
It is configured to be aligned almost in the center.

Further, work guides 111a and 111b are provided on both sides of the downstream conveyor belt 107 to
04 in the transport direction prevents the positioned workpiece 104 from dropping from the downstream transport belt 107 due to disturbance or the like, and prevents the downstream conveyor 1 from moving.
Stopper 1 for stopping the work 104 at the downstream end of the work 05
12 are provided, and the work 104 is positioned at the end.

The operation of this conventional example will be described below. In FIG. 6, the work 104 is an upstream conveying belt 1.
03, the work 10
4 is the upstream side conveyance belt 1 by the backcut stopper 108.
03 is temporarily stopped. While the work 104 is stopped, the work 104 is positioned at substantially the center of the upstream conveyor belt 103 by the pushers 110a and 110b. Thereafter, when the spinning stopper 108 is raised, the work 104 is positioned in the upstream side. Conveyor belt 10
3 and is transferred onto the downstream conveyor belt 107.

Here, since the downstream transport belt 107 is configured to move at a higher speed than the upstream transport belt 103, the work 104 transferred on the downstream transport belt 107 is moved to the next transport belt on the upstream transport belt 103. Are conveyed at a speed higher than that of the work, and an interval corresponding to the speed difference of the conveyance belt is generated between these works. Thus, the work 104
Is completely moved onto the downstream-side conveyor belt 107, the back-cutting stopper 108 descends again within the interval between the workpieces,
The next work is temporarily stopped on the upstream conveyor belt 103.

On the other hand, the workpieces 104 transferred onto the downstream conveyor belt 107 are sent out one by one onto the downstream conveyor belt 107 at an appropriate interval, and are conveyed by the downstream conveyor belt 107. The last work hits the last stopper 112 and stops, and is palletized by a robot or the like before the next work arrives.

[0008]

However, in the conventional example shown in FIG.
7 to support the entire bottom surface of the work 104,
04 is driven in the transport direction. For example, when the bottom surface of the work 104 is deformed and has a convex as shown in FIG.
8, the point of contact between the workpiece 104 and the downstream transport belt 107 is biased to one side of the center of gravity (G) of the workpiece 104, as shown in FIG. A force (F) deviating from the center of gravity acts on the work 104 due to the speed difference of the downstream side conveyance belt 107, and as a result, the work 104 rotates around the center of gravity,
There was a problem that positioning could not be performed.

Further, since the width between the work guides 111a and 111b cannot be changed in accordance with the width of the work 104, in the case of a work having a small width, the work 104 is not guided by the work guides 111a and 111b and is located on the downstream side. During the conveyance on the conveyor 105, the position of the work 104 is largely shifted due to disturbance or the like.
There is a disadvantage that the rotation angle of the work 104 when moving from 03 to the downstream-side conveyor belt 107 also increases, and positioning at the end cannot be performed.

Particularly, in a work positioning conveyor device used for palletizing in recent years, since a high transfer capacity corresponding to the processing capacity of a palletizing robot is required, positioning is performed after the work 104 passes through the spine stopper 108. The speed of the downstream conveyor belt 107 has been remarkably increased in order to shorten the time required for the work 1 due to the increase in the speed difference between the upstream conveyor belt 103 and the downstream conveyor belt 107.
Prevention of rotation of the 04 and prevention of displacement during transport have become important issues.

On the other hand, in another conventional example, as shown in FIG. 9, the contact between the bottom surface of the work 104 and the downstream conveyor belt 107 is reduced by pressing the work 104 from above using the work presser 113. There is an example in which the work 104 is prevented from rotating by improving and suppressing the generation of the moment force around the center of gravity and increasing the frictional force.
In such a conventional example, it is necessary to adjust the height of the work holder 113 in accordance with the height of the work 104, and there is a problem that the work holder 113 sometimes crushes the work 104.

Further, as shown in FIG. 10, the downstream conveyor 105 is divided into two parts on both sides of the center of gravity of the work 104, and the load of the work 104 is reduced by two downstream conveyors 105a and 105b having a relatively narrow width. Prevents the generation of moment force around the center of gravity of the work 104,
In some cases, the rotation of the work 104 is suppressed. However, in this conventional example, the speed of the two downstream conveyors 105a and 105b is accurately adjusted using, for example, a spline in order to carry the work 104 properly. Therefore, there is a problem that the configuration and the speed control mechanism of the downstream conveyors 105a and 105b are complicated and the cost is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a first object of the present invention is to prevent the rotation of the work when the work moves from the upstream conveyor belt to the downstream conveyor belt. It is another object of the present invention to provide a work positioning conveyor device that can stably convey and position even during conveyance.

A second object of the present invention is to provide a work positioning conveyor device which can flexibly cope with works having various widths.

[0015]

In order to achieve the above object, a work positioning conveyor device according to the present invention comprises, as a first means, an upstream conveyor and a downstream conveyor arranged in series in a conveying direction; In the conveyor device configured such that the work on the upstream conveyor belt is transferred onto the downstream conveyor belt at the downstream end of the upstream conveyor, the downstream conveyor belt having a width smaller than the upstream conveyor belt is supported at the center of gravity of the work. And a roller conveyor that supports the load of the work and a work guide that guides the work in the conveyance direction are provided on both sides of the downstream conveyor, and the roller conveyor and the work guide transport the work. Are not provided.

The second means is to arrange the upstream conveyor and the downstream conveyor in series in the conveying direction so that the work on the upstream conveying belt moves onto the downstream conveying belt at the downstream end of the upstream conveyor. In the configured conveyor device, a roller conveyor that supports the load of the work and a work guide that guides the work in the conveyance direction are provided on both sides of the downstream conveyor, and the downstream conveyance belt that is narrower than the upstream conveyance belt. Are arranged substantially at the center between the work guides, so that the roller conveyor and the work guide have no driving force for conveying the work.

A third means is the same as the first means, wherein the downstream conveyor belt can be moved in parallel in a direction perpendicular to the conveying direction.

Further, the fourth means is such that, in any one of the first to third means, the roller conveyor and the work guide can be moved in parallel in a direction perpendicular to the conveying direction.

A fifth means is the fourth means, wherein a moving frame capable of moving in parallel in a direction perpendicular to the conveying direction is arranged on both sides of the downstream conveyor, and a roller conveyor is provided for each of the moving frames. The work guide is attached, and the roller conveyor and the work guide move integrally with the movement of the moving frame.

Further, as the sixth means, the first means
In any one of the above means to the fifth means, a stopper for setting a stop position of the work is provided at a downstream end of the roller conveyor.

A seventh means according to any one of the first to sixth means, wherein the upstream end portion of the work guide is formed in the shape of a letter C extending upstream. It is.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a plan view showing a configuration of a workpiece positioning conveyor device according to Embodiment 1 of the present invention. In FIG. 1, reference numeral 1 denotes an upstream conveyor, which includes a belt driving roller 2 and an upstream conveying belt 3 (width = 800 mm to 1000 mm) wound around the belt driving roller 2, and includes a belt driving roller. 2 is rotated by a driving device (not shown), the upstream conveyor belt 3 moves in the direction of the arrow, and the work 4 (width = 350 mm) placed on the upstream conveyor belt 3 is moved.
(1500 mm) in the direction of the arrow. The downstream conveyor 5 arranged in series in the conveyance direction with respect to the upstream conveyor 1 includes a belt driving roller 6 and a downstream conveyance belt 7 (width = 75 mm) wound around the belt driving roller 6. ) And
When the belt driving roller 6 rotates, the downstream transport belt 7 moves at a higher speed than the upstream transport belt 3 in the direction of the arrow, and drives the work on the downstream transport belt 7 in the direction of the arrow.

In the first embodiment, the width of the downstream conveyor belt 7 is made narrower than the width of the upstream conveyor belt 3, and the downstream conveyor belt 7 is connected to the center of gravity (G) of the work 4 (this embodiment). In the form (1), only one of them is arranged at a position supporting substantially the center of the work 4). Further, on both sides of the downstream conveyor 5, roller conveyors 14a and 14b in which a plurality of rollers are arranged in the conveyance direction are provided to support the load of the work 4 and reduce the frictional force in the conveyance direction to move the work 4 downstream. It is configured to be easily driven in the transport direction by the side transport belt 7. Further, the roller conveyor 14
a, a plate-shaped work guide 11a,
11b is provided to guide the work 4 in the transport direction, and a stopper 12 for stopping the work 4 is provided at the downstream end of the downstream conveyor 5 to set the stop position of the work.

Further, between the upstream conveyor belt 3 and the downstream conveyor belt 7, as in the conventional example, a back-cut stopper 8 for temporarily stopping the work 4 on the upstream conveyor belt 3 is further provided. An air cylinder 9 is provided at the downstream end of the conveyor 1.
a, 9b driven by the pushers 10a, 10b, and the work 4 stopped on the upstream conveying belt 3 by the backside stopper 8 is pushed.
Is pressed from both sides, so that the position of the work 4 is aligned substantially at the center of the upstream side conveyance belt 3 in the width direction.

As is clear from the above description,
In this embodiment, since the roller conveyors 14a and 14b and the work guides 11a and 11b do not have a driving force for the work 4, the work 4 is moved to the central portion after being transferred onto the downstream conveyor belt 7. It is driven in the transport direction only by the installed downstream transport belt 7.

Hereinafter, the operation of this embodiment will be described. In FIG. 1, when the work 4 is conveyed by the upstream conveyance belt 3 in the direction of the arrow, the work 4 is temporarily stopped by the back-cutting stopper 8. While the work 4 is stopped, the work 4 is aligned substantially in the center in the width direction (perpendicular to the conveyance direction) on the upstream conveyance belt 3 by the pushers 10a and 10b.
Is raised, the work 4 is moved to the upstream side conveyance belt 3.
And is transferred onto the downstream conveyor belt 7 and the roller conveyors 14a and 14b.

In this way, the work 4 transferred onto the downstream conveyor belt 7 is sent in the conveying direction by the downstream conveyor belt 7 while being supported and guided by the roller conveyors 14a, 14b and the work guides 11a, 11b. It stops by hitting the stopper 12. It should be noted that a mechanism in which the workpieces are sent out one by one on the downstream conveyor 7 at appropriate intervals by the speed difference between the upstream conveyor belt 3 and the downstream conveyor belt 7 and the operation of the back-cutting stopper 8 is a conventional example. Is exactly the same as

As described above, in the first embodiment, the downstream transport belt 7 having a width smaller than the width of the upstream transport belt 3 supports the vicinity of the center of gravity of the work 4 and drives the workpiece 4 in the transport direction. Roller conveyors 14a and 14b with small frictional force and work guides 11a and 11
b to support and guide the work 4
Even if there is a convex portion on the bottom surface of the work 4, the driving force acts only near the center of gravity of the work 4, no moment force for rotating the work 4 is generated, and the upstream transfer belt 3 to the downstream transfer belt 7 In this case, there is an effect that the workpiece 4 can be stably conveyed without rotating.

It is necessary to select an appropriate width for the downstream conveyor belt 7 in accordance with the width of the work 4 and the amount of variation in the position of the center of gravity. In this embodiment, as described above, While the width of the upstream conveyor belt 3 is set to 800 mm to 1000 mm and the width of the work 4 is set to 350 mm to 1500 mm, the width of the downstream conveyor belt 7 is set to 75 mm. In this case, about 50 mm to about 200 mm is practical.

FIG. 2 is a side view of the first embodiment shown in FIG. 1 as viewed from the direction indicated by AA in FIG. In FIG. 2, reference numerals 15a and 15b denote moving frames, which are installed by casters 16a and 16b so as to be able to move in parallel in a direction perpendicular to the transport direction (the direction of the arrow in the figure). Each of the moving frames 15a has a roller conveyor. 14a and the work guide 11a, and the moving frame 15b has a roller conveyor 14b and the work guide 11a.
b is attached, and is configured to move integrally with the movement of the moving frames 15a and 15b.

The moving frames 15a and 15b are connected to a moving frame driving device 19 via trapezoidal screws 18a and 18b, which are connected at the center by couplings 17 and have opposite threading directions, and are connected to the moving frame driving device. When the trapezoidal screws 18a, 18b are rotated by 19, the moving frames 15a, 15b move symmetrically in opposite directions (opposite directions), respectively, and according to the width of the work 4, the moving frames 15a, 15b, that is, the work guides 11a, 11a,
The interval between 1b can be changed.

Further, the downstream conveyor 5 is installed on a conveyor moving table 21 which can be moved in parallel in a direction perpendicular to the conveying direction by a conveyor caster 20, and similarly to the moving frames 15a and 15b, the conveyor screws ( (Not shown) and a conveyor moving base driving device (not shown).

As described above, according to FIG. 2, the width of the downstream conveyor belt 7 is reduced, and the interval between the work guides 11a and 11b can be changed according to the width of the work 4. Work guides 11a and 11b can guide the side surface of the work 4 even when the work is narrow, and the work positioning conveyor can cope with a wide variety of work widths with less displacement of the work during conveyance and rotation of the work 4. There is an effect that the device can be obtained. In this embodiment, the roller conveyors 14a and 14b and the work guides 11a and 11b are attached to the moving frames 15a and 15b, and move integrally. However, the roller conveyors 14a and 14b move separately. Even with this configuration, the same effects as described above can be obtained.

In this embodiment, since the roller conveyors 14a and 14b and the work guides 11a and 11b are mounted on the moving frames 15a and 15b and move together, the drive mechanism is simplified, and the manufacturing cost is reduced. Is also reduced.

Further, since the moving frames 15a and 15b are symmetrically translated in opposite directions by the moving frame driving device 19 and the trapezoidal screws 18a and 18b, for example,
The center line between the work guides 11a and 11b and the pusher 10
If the center positions at the time of positioning of a and 10b are previously adjusted, even if the moving frames 15a and 15b are moved to change the width between the work guides 11a and 11b, the center line between the work guides 11a and 11b is not changed. Since the center positions at the time of positioning the pushers 10a and 10b are always automatically matched, the center line is shifted and the work 4 is moved to the work guides 11a and
Trouble such as collision with 1b can be prevented.

Further, in this embodiment, since the downstream conveyor 5 can be moved in parallel in the direction perpendicular to the conveying direction, even if the center of gravity of the work 4 is not at the center of the work 4,
By moving the downstream conveyor belt 7 to a position corresponding to the center of gravity of the work 4, it is possible to flexibly cope with works having various center-of-gravity positions and to stably convey the work. Further, instead of moving the entire downstream conveyor 5, for example, the width of the belt driving roller 6 is changed to the downstream conveyance belt 7.
, And the downstream conveying belt 7 can be moved (changed in setting) in the direction perpendicular to the conveying direction within the range of the width of the belt driving roller 6, and the same effect as above can be obtained. Can be

In the case of a box-shaped workpiece, since the center of gravity is often located near the center of the workpiece 4, the downstream transport belt 7 is moved in the width direction (perpendicular to the transport direction) between the workpiece guides 11a and 11b. Installed in the center, and the downstream conveyor belt 7
If the width of the work 4 is set to be large, the downstream-side conveyor belt 7 can support the center of gravity of the work 4 for most of the works, and the downstream-side transfer belt 7 is frequently moved according to the position of the center of gravity of the work 4. No need to move, more practical.

Embodiment 2 FIG. 3 is a plan view of Embodiment 2 of the present invention. As shown in FIG. 3, in this embodiment, instead of the stopper 12 arranged at the downstream end of the downstream conveyor 5 in the first embodiment, stoppers 12a and 12b divided into right and left are respectively provided by rollers. It is installed at the downstream end of the conveyors 14a and 14b.

Thus, according to this embodiment, since the left and right ends of the work 4 hit the stoppers 12a and 12b, respectively, and stop, the work 4 becomes a problem when one stopper 12 is disposed at the center. Is stopped at the downstream end while the roller conveyors 14a and 14b move.
Since a and 12b also move, there is an effect of obtaining a work positioning conveyor device capable of stably positioning the stop position even when the width of the work 4 changes.

Embodiment 3 FIG. 4 shows another embodiment in which work guides 11a and 11b are used instead of the pushers 10a and 10b used in the first embodiment.
Is extended to the upper side of the upstream conveyor 1 and the end of the upstream side is widened to the upstream side in a C-shape to perform positioning in the width direction (perpendicular to the transport direction). In this embodiment, the work 4 is gradually guided to the center by the inclined portions of the work guides 11a and 11b as the work 4 is moved, and the work 4 is configured to be positioned.
This is particularly useful in the case of a box-shaped work in which the work 4 is not likely to be caught between the work guides 11a and 11b and the upstream side conveyance belt 3.

As described above, according to this embodiment, a complicated mechanism such as the pushers 10a and 10b for positioning is not required, so that the manufacturing cost can be reduced as compared with the first embodiment, and the backing stopper can be formed. Since the positioning can be performed while transporting the workpiece 4 without using the workpiece 8, the processing capacity of the workpiece positioning conveyor device can be increased. Furthermore, even if the width of the work 4 changes, the pushers 10a, 10a
It is not necessary to change the setting of b, and the center position is automatically set, so that the work guides 11a and 11b and the roller conveyors 14a and 14b are configured to be movable. Thus, there is an effect that a more flexible work positioning conveyor device that can cope with the above problem can be obtained.

When the upstream end of the work guides 11a and 11b has a large spread angle (θ), the work 4 is caught by the work guides 11a and 11b and rotates or stops. It is necessary to adjust the divergence angle (θ) according to the speed of the upstream conveyor belt 3 and the like. In this embodiment, the speed of the upstream conveyor belt 3, which is a general use condition of the work positioning conveyor device, is: In the case of a cardboard box work, the spread angle (θ) is set to 10 degrees or less for 36 m / min or less.

Embodiment 4 FIG. Further, the first embodiment described above
In the third embodiment, the work guides 11a, 11b
Is formed by a plate-like member. However, in the case of a box-shaped work as in the fourth embodiment shown in the side view of FIG. Similar effects can be obtained even when the work guides 11a and 11b are in contact with only the parts. Further, as described above, in the case of a box-shaped work, since the center of gravity is almost at the center of most of the works, in the fourth embodiment, the position of the downstream side conveyance belt 7 is set between the work guides 11a and 11b. It is fixed and installed almost at the center. By fixing the downstream conveyor belt 7, the moving mechanism of the downstream conveyor belt 7 becomes unnecessary, and the structure of the work positioning conveyor device can be made simpler and the production cost can be reduced. There is an effect that can be done.

As described above, even when the position of the downstream conveyor belt 7 is fixed, the moving frames 15a, 15b
Are configured to be able to be moved separately in the direction perpendicular to the transport direction, and the position of the pushers 10a and 10b and the positions of the moving frames 15a and 15b are changed even for the work 4 whose center of gravity is not near the center. Work 4
Can be guided so that the center of gravity is located on the downstream side conveyance belt 7, and it is possible to cope with works having various types of positions and widths of the center of gravity.

[0045]

As described above, according to the first aspect of the present invention, the downstream conveyor belt, which is narrower than the upstream conveyor belt, is arranged at a position for supporting the center of gravity of the work, and both sides of the downstream conveyor are provided. Is provided with a roller conveyor that supports the load of the work, and a work guide that guides the work in the transfer direction.Furthermore, the roller conveyor and the work guide have no driving force to transfer the work, so that the rotation of the work This is effective in obtaining a work positioning conveyor device which is less likely to cause the occurrence and can stably convey and position.

According to the second aspect of the present invention, the downstream conveyor belt, which is narrower than the upstream conveyor belt, is disposed substantially at the center between the work guides, and the load of the work is placed on both sides of the downstream conveyor. A roller conveyor that supports
A work guide that guides the work in the transfer direction is provided, and the roller conveyor and the work guide are configured to have no driving force to transfer the work. There is an effect that a work positioning conveyor device which can carry and position the workpieces can be obtained.

According to the third aspect of the present invention, the downstream conveyor belt is configured to be able to move in parallel in a direction perpendicular to the conveyance direction, so that it can cope with various kinds of works having different positions of the center of gravity and can stably convey the conveyor. There is an effect that a work positioning conveyor device capable of positioning can be obtained.

According to the fourth aspect of the present invention, since the roller conveyor and the work guide are configured to be able to move in parallel in the direction perpendicular to the conveying direction, it is possible to cope with works having various widths and to stably operate during the conveying. There is an effect that a work positioning conveyor device which can carry and position the workpieces can be obtained.

According to the fifth aspect of the present invention, the roller conveyor and the work guide are attached to each of the moving frames, and the roller conveyor and the work guide move together as the moving frame moves in parallel. With this configuration, the driving mechanism for the roller conveyor and the work guide is simplified.

According to the sixth aspect of the present invention, since the stopper for setting the stop position of the work is provided at the downstream end of the roller conveyor, the stop position can be stably positioned with respect to various types of work widths. There is a possible effect.

According to the seventh aspect of the present invention, since the upstream end of the work guide is formed so as to expand in a U-shape upstream, the work positioning mechanism is simplified, and the manufacturing cost of the apparatus is increased. In addition, there is an effect that a work positioning conveyor device capable of coping with various kinds of works can be obtained at a low cost.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of the present invention.

FIG. 2 is a side view showing the first embodiment of the present invention.

FIG. 3 is a plan view showing Embodiment 2 of the present invention.

FIG. 4 is a plan view showing a third embodiment of the present invention.

FIG. 5 is a side view showing a fourth embodiment of the present invention.

FIG. 6 is a plan view showing a conventional work positioning conveyor device.

FIG. 7 is a side view showing a problem of a conventional work positioning conveyor device.

FIG. 8 is a plan view showing a problem of a conventional work positioning conveyor device.

FIG. 9 is a side view showing another conventional work positioning conveyor device.

FIG. 10 is a plan view showing another conventional work positioning conveyor device.

[Explanation of symbols]

 1 Upstream Conveyor 3 Upstream Conveyor Belt 4 Work 5 Downstream Conveyor 7 Downstream Conveyor Belt 11a, 11b Work Guide 12, 12a, 12b Stopper 14a, 14b Roller Conveyor 15a, 15b Moving Frame

Claims (7)

[Claims] An upstream conveyor for conveying a workpiece on the upstream conveyor belt by moving the upstream conveyor belt, and an upstream conveyor arranged in series in the conveying direction with respect to the upstream conveyor. A downstream conveyor that drives the work on the downstream conveyor belt in the conveying direction by moving the work, and the work on the upstream conveyor belt moves onto the downstream conveyor belt at the downstream end of the upstream conveyor. In the conveyor device configured as described above, the downstream conveyor includes the downstream conveyor belt that is narrower than the upstream conveyor belt at a position that supports the center of gravity of the work, and on both sides of the downstream conveyor, A roller conveyor for supporting the load of the work and a work guide for guiding the work in the transport direction are provided. A work positioning conveyor device wherein the roller conveyor and the work guide do not have a driving force for conveying the work. 2. An upstream conveyor for conveying a workpiece on the upstream conveyor belt by moving the upstream conveyor belt, and an upstream conveyor arranged in series in the conveying direction with respect to the upstream conveyor. A downstream conveyor that drives the work on the downstream conveyor belt in the conveying direction by moving the work, and the work on the upstream conveyor belt moves onto the downstream conveyor belt at the downstream end of the upstream conveyor. In the conveyor device configured as described above, a roller conveyor that supports the load of the work and a work guide that guides the work in the transport direction are provided on both sides of the downstream conveyor, respectively, and the downstream conveyor is provided with: The downstream conveyor belt, which is narrower than the upstream conveyor belt, is disposed at the center between the work guides, and the roller A conveyor for positioning a work, wherein the conveyor and the work guide have no driving force for conveying the work. 3. The work positioning conveyor device according to claim 1, wherein said downstream conveyor belt is configured to be movable in parallel in a direction perpendicular to the conveying direction. 4. The work positioning conveyor according to claim 1, wherein the roller conveyor and the work guide are configured to be movable in parallel in a direction perpendicular to a conveying direction. apparatus. 5. A moving frame capable of moving in parallel in a direction perpendicular to the conveying direction is disposed on both sides of the downstream conveyor, and the roller conveyor and the work guide are attached to each of the moving frames, and the moving frame is moved. 5. The work positioning conveyor device according to claim 4, wherein the roller conveyor and the work guide are configured to move together as a result. 6. A workpiece positioning conveyor device according to claim 1, wherein a stopper for setting a stop position of the workpiece is provided at a downstream end of said roller conveyor. . 7. The work according to claim 1, wherein the upstream end of the work guide is formed in a shape of a U-shape on the upstream side. Positioning conveyor device.