JPH08108928A - Cross feed device in conveyor - Google Patents

Abstract

PURPOSE: To provide a cross feed device capable of cross feed on both the right and the left side relative to a carrying direction without providing a special driving source for the cross feed device. CONSTITUTION: A cross feed device 12 comprises an endless carrier belt 13 which can be freely protruded/retracted from a carrier surface of a roller conveyor, and a driving transmission means 14 to receive power from a drive rotation shaft 8 to rotate a roller 3 to drive the endless carrier belt 13. An endless belt 24 is applied on the upper side or lower side of an endless carrier belt driving wheel 23 to drive the endless carrier belt 13, so the endless carrier belt driving wheel 23 rotates normally or reversely relative to rotation of the driving rotation shaft 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lateral feeding device for a conveyor which laterally feeds articles on a conveyor such as a roller conveyor in a direction orthogonal to the conveying direction of the conveyor.

[0002]

2. Description of the Related Art The following is known as a lateral feeding device for a conveyor. That is, at least two endless conveyor belts that are vertically movable between rollers of a roller conveyor, and an endless conveyor belt actuating device that has a driven wheel that receives power from a rotation driving device of the roller conveyor at a position where the endless conveyor belt is raised. Traversing devices in roller conveyors with are known. The endless transport belt is stretched over a plurality of wheels including a driven wheel, and the upper portion protruding above the transport surface of the roller conveyor serves as the transport unit of the lateral feed device.

[0003]

However, in the transverse feed device of the conventional roller conveyor described above, the endless transport belt is stretched over a plurality of wheels including the driven wheel, so that the drive direction of the endless transport belt is set to the driven wheel. Was determined by the rotation direction of. That is, the conveying direction of the lateral feeding device is determined by the conveying direction of the roller conveyor. Thus, when the endless transport belt receives power from the rotary drive device of the roller conveyor, it cannot be laterally fed to the left and right sides in the transport direction.
For example, in order to laterally feed an article from a central roller conveyor of three roller conveyors arranged in parallel to the roller conveyors on both sides, separately from the rotary driving device of the roller conveyor, specially for the lateral feeding device. It was necessary to provide a drive source such as a motor for driving the endless transport belt.
If a drive source such as a motor is provided separately, there is a drawback that the cost is high.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a lateral feed which can be laterally fed to the left and right sides with respect to the carrying direction without providing a special drive source for the lateral feed device. To provide a device.

[0005]

In order to achieve the above object, the invention according to claim 1 receives power from an endless conveyor belt which can freely move in and out of a conveyor surface and a rotary drive device of the conveyor. A transverse feed device for a conveyor, which is provided with drive transmission means for driving the endless conveyance band in the forward direction or the reverse direction with respect to the conveying direction of the conveyor.

According to a second aspect of the present invention, the drive transmission means includes a driven wheel capable of receiving power from a rotary drive device for the conveyor, and first and second auxiliary wheels.
The endless transport belt driving wheel located between the first auxiliary wheel and the second auxiliary wheel, and the driven wheel and the first and second auxiliary wheels
An endless belt that is selectively stretched above or below the endless transport belt drive wheel is provided.

According to a third aspect of the present invention, the rotation axis of the endless transport belt drive wheel is common without substantially intersecting with a straight line connecting the axes of the first auxiliary wheel and the second auxiliary wheel. It shall be located tangentially in the middle of the contact point with each wheel.

[0008]

According to the first aspect of the present invention, the endless conveyor belt projects from the conveyor surface of the conveyor and is driven in the forward or reverse direction by the drive transmission means receiving power from the rotary drive device of the conveyor.

According to the second aspect of the present invention, the endless belt is driven in accordance with the rotation of the driven wheel that receives power from the rotary drive device for the conveyor. 2 auxiliary wheels rotate. The endless conveyor belt driving wheel rotates in the forward direction or the reverse direction when the endless conveyor belt is hung on the upper side or the lower side, and accordingly, the endless conveyor belt is driven in the forward direction or the reverse direction.

According to the third aspect of the invention, the rotation axis of the endless conveyor belt drive wheel is a common tangent line that does not intersect with a straight line connecting the respective axial centers of the first auxiliary wheel and the second auxiliary wheel, Since it is located in the middle of the contact point with each wheel, the total lengths of the endless belts are almost equal when the endless belts contact the upper side and the lower side of the endless transport belt drive wheel.

[0011]

EXAMPLES Examples of the present invention will be described below with reference to the drawings, but the present invention is not limited to these examples without departing from the gist of the present invention. 1 is a simplified plan view showing an embodiment of the present invention, FIG. 2 is an enlarged sectional view taken along line II-II of FIG. 1, and FIG.
2 is an enlarged cross-sectional view taken along the line III-III of FIG. 1, and FIG. 4 is a schematic view of a main part of FIG. In this specification, the front means the upper side in FIG. 1, the rear means the lower side in FIG. 1, the left means the left side in FIG. 1, the right means the right side in FIG. 1, and the upper side means the front side in FIG. Is the back side of the drawing.

The roller conveyor 1a has a base frame 2 and a large number of rollers 3 provided on the base frame 2 so as to be rotatable at predetermined intervals in the left-right direction so that the axis of the base frame 2 faces the front-back direction. . The roller conveyors 1b and 1c are provided with a large number of rollers 3 at predetermined intervals in the front-rear direction so that their axes are oriented in the left-right direction, and are arranged so that they are orthogonal to the left end portion 4 and the right end portion 5 of the roller conveyor 1a. It is connected. In each roller conveyor, the envelope surface formed by the upper end of each roller 3 serves as the transport surface. The roller conveyors 1a, 1b, 1c are conveyed in the right direction, the front direction, and the rear direction, respectively, and these roller conveyors form a U-shaped conveyance path.

A guide 6 is attached to the upper part of the base frame 2 for guiding the article along the conveying path and preventing the article from falling. However, in the lower base frame 2 of the roller conveyor 1a, the left end portion 4 and the right end portion 5, that is, the roller conveyor 1b.
The guide 6 is not attached to the area where the articles are received from and the area where the articles are delivered to the roller conveyor 1c. Further, at a predetermined position of the base frame 2, a connecting bar 7 is stretched back and forth.

The connecting bar 7 is provided below the roller 3 with a drive rotary shaft 8 which is always rotatable with its axis oriented in the conveying direction. The drive rotary shaft 8 is provided with a round belt 9 therebetween. A power transmission roller 10 that receives power from the roller 3 can freely move toward and away from the roller 3. The two rollers 3 form one set, and the transmission roller 10 is located below the pair of the rollers 3. With such a mechanism, the roller 3 can be switched between rotation and stop, and the article is conveyed by the rotation of the roller 3. However, at the left end 4 and the right end 5 of the roller conveyor 1a, the transmission roller 10 is provided for each roller, and a space 11 is formed below the rollers 3.

At the left end portion 4 and the right end portion 5 of the roller conveyor 1a, a transverse feeding device 12 for conveying articles in the front-rear direction is installed. The lateral feeding device 12 is located in the space 11 and is capable of projecting and retracting with respect to the transport surface of the roller conveyor 1a, and drive transmission means 14 for driving the endless transport band 13 by receiving power from the drive rotation shaft 8. When,
A known lifting device 15 including a fluid pressure cylinder and the like is included. The endless transport belt 13 is installed so as to be driven around an elevating plate 17 supported on an upper end portion of an elevating frame 16 which can be raised and lowered by an elevating device 15, and the upper portion 1 is raised at a raised position.
3a can project from the transport surface of the roller conveyor 1a. The drive transmission means 14 receives power from the drive rotary shaft 8 and drives the endless transport belt 13 in the forward or reverse direction with respect to the rotation direction of the drive rotary shaft 8. With such a mechanism, the articles on the endless conveyance belt can be conveyed forward or backward, and the articles can be received from the roller conveyor 1b or discharged to the roller conveyor 1c.

Five endless transport belts 13 are installed between each roller 3 at the left end portion 4 and the right end portion 5 of the roller conveyor 1a, and five endless transport belts 13 are provided.
Are designed to work together. In addition, endless transport belt 1
The installation interval and the number of installations of 3 may be appropriately changed according to the size of the article to be conveyed and the like.

Next, the drive transmission means 14 will be described.
The drive transmission means 14 includes a driven roller 19 that can be contacted and separated from the lower side of a drive roller 18 that is fitted in a predetermined position of the drive rotation shaft 8, a driven wheel 20 that rotates together with the driven roller 19, and first and second drive wheels. Auxiliary wheels 21 and 22 of
It has an endless conveyor belt drive wheel 23 and an endless belt 24 laid over each wheel.

A driven rotary shaft 25 is provided below the elevating frame 16.
Is rotatably provided such that its axis is oriented in the left-right direction and is positioned below and in front of the drive rotary shaft 8 of the roller conveyor 1a (see FIG. 2). The driven roller 19 is fitted and fixed so as to face the drive roller 18. An auxiliary roller 26, which has an axis parallel to the axis of the drive rotary shaft 8 at a predetermined interval in front of the drive roller 18, is rotatably provided on the connecting bar 7. Then, when the elevating frame 16 moves up to a height position where the upper side portion 13a of the endless conveyance belt 13 is projected from the conveyance surface of the roller conveyor 1a, the drive roller 18 and the auxiliary roller 26 come into contact with them from below. Then, the driven roller 19 is inserted.

The driven wheel 20 is fixed to the left end of the driven rotating shaft 25, and the driven roller 19 rotates by receiving power from the driving roller 18, whereby the driven wheel 20 rotates. On the upper part of the elevating frame 16, the endless transport belt drive wheel 23 is positioned below the center of the endless transport belt 13 in the front-rear direction.
And second auxiliary wheels 21 and 22 are rotatably provided.

The endless transport belt drive wheel 23
Is fixed to the endless transport belt drive shaft 27 provided over almost the entire width of the elevating frame 16 in the left-right direction with the axis centered in the left-right direction, and when the endless transport belt drive shaft 27 rotates, five All of the endless conveyor belts are driven simultaneously. The endless belt 24 is stretched over the endless transport belt driving wheel 23, the first and second auxiliary wheels 21, 22 and the driven wheel 24, and transmits the rotation of the driven wheel 24 to the endless transport belt driving wheel 23.

With such a mechanism, the rotation of the drive rotary shaft 8 is transmitted to the driven rotary shaft 25, and the rotation of the driven wheel 20 rotated by the rotation of the driven rotary shaft 25 is transmitted to the endless transport belt drive wheel 23, thereby the endless drive. The endless transport belt 13 is driven by the endless transport belt drive shaft 27 that is rotated by the rotation of the transport belt drive wheel 23. That is, the drive transmission means 14 can receive the motive power from the drive rotation shaft 8 that is the rotation drive device of the roller conveyor 1a to laterally feed the article on the endless transport belt 13.

In the example of the left end portion 4 of the roller conveyor 1a, the endless belt 24 is fed to the upper side of the endless belt driving wheel 23 because it is laterally fed in the left direction (forward direction) with respect to the conveying direction (right direction). Is hung (Fig. 2
reference). That is, in FIG. 2, with respect to the counterclockwise rotation of the drive rotary shaft 8, the endless transport belt drive wheel 23 is rotated.
Rotates clockwise (forward). When the endless belt 24 is hung on the lower side of the endless conveyor belt 23, it is fed laterally to the right (rearward) with respect to the conveying direction (rightward) of the roller conveyor 1a (see FIG. 4). That is, FIG.
At, with respect to the counterclockwise rotation of the drive rotary shaft 8,
The endless transport belt drive wheel 23 rotates counterclockwise (reverse direction). In the transverse feeding device at the right end portion 5 of the roller conveyor 1a, the endless belt 24 can be hung on the lower side of the endless transport belt driving wheel 23 to dispense the article to the roller conveyor 1c.

The endless transport belt drive wheel 2 is used.
The rotating shaft of 3 has a contact point 30, 31 with each wheel 21, 22 at a common tangent line 29 that does not intersect with a straight line 28 that connects the axes of the first auxiliary wheel 21 and the second auxiliary wheel 22. It is designed to be located in the middle (see FIG. 4). That is, the total length of the endless belt 24 is made equal when the endless belt 24 is hung on the upper side of the endless belt driving wheel 23 and when it is hung on the lower side.

In this embodiment, since the transport surfaces of the roller conveyors are horizontal and have the same height, the height of the upper portion 13a of the endless transport belt 13 in the raised position is the height of the roller conveyor. It's a little higher than the face. Therefore, the articles conveyed on the roller conveyor 1b are pulled up by the drive of the endless conveyance belt 13 at the front end thereof and pushed by the rotation of the rollers 3 at the rear end thereof, so that the articles are slightly mounted on the endless conveyance belt 13. Reprinted in. On the other hand, the right end portion 5 of the roller conveyor 1a
The article on the endless transport belt 13 in (1) is pushed by the drive of the endless transport belt 13 and dragged by the rotation of the roller 3, so that the article is transferred onto the roller conveyor 1c so as to be slightly dropped.

Incidentally, at the left end 4 of the roller conveyor 1a, the upper side 13 of the endless conveyor belt 13 in the raised position.
By making the height of a equal to or slightly lower than the conveying surface of the roller conveyor 1b near the joint with the roller conveyor 1a, the articles conveyed on the roller conveyor 1b can be conveyed. It can be easily transferred onto 1a. On the other hand, at the right end portion 5 of the roller conveyor 1a, the height of the upper portion 13a of the endless conveyor belt 13 at the elevated position is the same as the conveyor surface of the roller conveyor 1c near the joint with the roller conveyor 1a, or By making it slightly higher than the surface, it is possible to facilitate the transfer of articles from the roller conveyor 1a onto the roller conveyor 1c.

[0026]

As described above, according to the first aspect of the present invention, the endless conveyor belt projects toward the conveyor surface of the conveyor and receives power from the rotary drive device of the conveyor by the drive transmission means to move in the forward or reverse direction. Since it is driven in the direction, it does not require a special drive source for the traverse device, and can be traversed leftward or rightward with respect to the conveying direction at low cost.

According to the second aspect of the invention, the rotation of the driven wheel is transmitted to the endless conveyor belt drive wheel by the endless belt, and the article can be laterally fed by the power from the rotary drive device of the conveyor with a simple mechanism. . Further, the direction of lateral feeding can be easily changed with respect to the same conveying direction of the conveyor simply by switching the endless belt to the upper side or the lower side of the endless conveying zone drive wheel.

According to the third aspect of the present invention, when the endless belt comes into contact with the upper side and the lower side of the endless conveyor belt drive wheel, the total lengths of the endless belts are substantially equal, so that the tension is almost constant and the rotation is stable. Transmitted.

[Brief description of drawings]

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

2 is an enlarged sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged sectional view taken along line III-III in FIG.

FIG. 4 is a schematic view of a main part of FIG.

[Explanation of symbols]

 1a, 1b, 1c Roller conveyor 3 Roller 8 Drive rotary shaft 11 Space 12 Traverse feed device 13 Endless transport belt 15 Elevating device 16 Elevating frame 17 Elevating plate 18 Drive roller 19 Driven roller 20 Driven wheel 21 First auxiliary wheel 22 2nd Auxiliary wheel 23 Endless conveyor belt drive wheel 24 Endless belt 25 Driven rotary shaft 26 Auxiliary roller 27 Endless conveyor belt drive shaft

Claims (3)

[Claims] 1. An endless conveyor belt that can freely move in and out of a conveyor conveyor surface, and power is received from a conveyor rotation drive device to drive the endless conveyor belt in a forward or reverse direction with respect to the conveyor conveyor direction. A transverse feed device in a conveyor, which is provided with a drive transmission means. 2. The driven transmission means is a driven wheel capable of receiving power from a rotary drive device of a conveyor,
The first and second auxiliary wheels, the endless transport belt drive wheel located between the first and second auxiliary wheels, and the driven wheel and the first and second auxiliary wheels. The lateral feeding device for a conveyor according to claim 1, further comprising: an endless belt selectively hung above or below an endless transport belt driving wheel. 3. The endless transport belt drive wheel has a rotation axis that is substantially tangential to each of the first auxiliary wheel and the second auxiliary wheel at a common tangent line that does not intersect with a straight line connecting the respective axial centers of the wheels. The traverse device for a conveyor according to claim 2, wherein the traverse device is located in the middle of the contact points.