JP2000103518A - Carrying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carrying device for generating sufficiently powerful attracting force by an attraction device using a magnet, and moreover preventing the overturn of a cargo when the cargo is pushed by a shoe to be moved. SOLUTION: Plural slats are provided with shoes movable in an orthogonal direction to a carrying path, and are formed of a rectilinear guide part 24 for guiding rollers 22, provided on the back surface sides of the respective shoes, in a rectilinear direction along a carrying path; and a branch guide part 26 branched from the said part 24 to guide the rollers 22 in the orthogonal direction to the carrying path. The said part 26 is provided with plural attraction part 31 for attracting the rollers 22 from the said part 24 to the said part 26 by the magnetic force of an electromagnet 31c, and plural guide rails 33 for guiding the rollers 22 attracted to the said part 26. The tilted angle B of the device 31 is set larger than the tilted angle A1 of the rail 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport device used for sorting or merging while transporting a load.

[0002]

2. Description of the Related Art Conventionally, as this type of transfer apparatus, for example, the transfer apparatus shown in FIGS. That is, the transfer device 61 receives the loads 63 sequentially loaded from the plurality of load transfer conveyors 62a, 62b, and 62c installed in parallel on the upstream side, and merges with the single load transfer conveyor 64 on the downstream side while transferring. It is to let.

[0003] The structure of the transport device 61 will be described below. That is, a pair of left and right chains 67 are arranged endlessly along the transport path 66, and a plurality of slats 68 are provided between the two chains 67 in a direction perpendicular to the transport path 66. A plurality of shoes 69 supported and guided by the slats 68 and movable in a direction orthogonal to the transport path 66 are provided, and a guide roller 70 is provided on the back side of these shoes 69.

[0004] As shown in FIG.
A straight guide 71 that guides the roller 70 in the straight direction along the transport path 66, and a plurality of branch guides 72 that branch from the straight guide 71 and guide the roller 70 in a direction orthogonal to the transport path 66 include: Is formed. Each of the branch guides 72 is provided with a suction device 73 that sucks the roller 70 from the straight guide 71 to the branch guide 72, and a guide rail 74 that guides the roller 70 sucked by the branch guide 72. I have. The suction device 73 is formed of an electromagnet, and is provided at the start end of the guide rail 74.
The suction device 73 and the guide rail 74 are inclined at a constant inclination angle A with respect to the transport path 66.

[0005] According to this, by driving the chain 67, the slat 68 rotates on the endless path. The load 63 sequentially loaded from each of the load transfer conveyors 62a, 62b, 62c is placed on the slat 68 and transferred to the load transfer conveyor 64 side. At this time, each suction device 73
When the roller 70 is energized, the roller 70 is attracted from the linear guide 71 to the branch guide 72 by the magnetic force of the suction device 73, and is guided by the guide rail 74 while being guided by the guide rail 74.
To move. As a result, the shoe 69 moves in a direction orthogonal to the transport path 66. When the power is not supplied to each suction device 73, the roller 70 is directly moved to the straight guide portion 71.
, The shoe 69 goes straight along the transport path 66 while being positioned at both ends of the slat 68.

Accordingly, the central loading conveyor 62b
Is carried from the transport device 61 to the load conveyor 64 by causing the shoes 69 located at both ends of the slat 68 to move straight along the transport path 66 as described above. The load 63 loaded from the loading conveyors 62a, 62c at both ends is moved in a direction perpendicular to the transport path 66 from the both ends of the slat 68 toward the center as described above. Since it is pushed by 69 and moves from the side end to the center of the transport device 61, it is transported from the transport device 61 to the load transport conveyor 64.

[0007]

In the above-mentioned conventional type,
As shown in FIG. 12, when the inclination angle A is small, the moving speed of the shoe 69 in the lateral direction X (that is, the direction orthogonal to the transport path 66) becomes slow. Of the load 63 can be prevented. However, the width W of each suction device 73 (that is, the size of the suction device 73 in the direction orthogonal to the moving path 75 of the roller 70 passing through the branch guide 72) is reduced, and a sufficient suction force (magnetic force) is obtained. Could not occur.

On the other hand, as shown in FIG. 13, when the inclination angle B is set to be larger than the above-mentioned inclination angle A, the width W of each suction device 73 increases, and a sufficiently strong attractive force (magnetic force) is obtained. Can be generated, but conversely, the shoe 69
Of the cargo 6 in the lateral direction X is increased.
When pushing the shoe 3 with the shoe 69, the load 63 may fall on the slat 68.

According to the present invention, when a suction device generates a sufficiently strong suction force and further presses a load with a load pressing body (shoe),
It is an object of the present invention to provide a transport device capable of preventing a load from overturning.

[0010]

According to a first aspect of the present invention, there is provided a transfer apparatus comprising a plurality of load supporting members for loading and transferring a load on an endless rotating body disposed along a transfer path. The load supporting members are provided with a pressing body movable in a direction orthogonal to the transport path, a guided body is provided on the back side of each of the pressed bodies, and the guided body is transported along the transport path. A straight-ahead guide that guides in the straight-ahead direction along
A branch guide portion that branches from the straight guide portion and guides the guided body in a direction orthogonal to the transport path is formed;
The branch guide section is provided with a plurality of suction devices for sucking the guided body from the straight guide section to the branch guide section, and a plurality of guide rails for guiding the guided body sucked to the branch guide section. Each guide rail is inclined at a constant inclination angle with respect to the transport path, and each of the suction devices is provided at the starting end of each guide rail and is inclined at an inclination angle larger than the inclination angle of the guide rail. Things.

According to this, since the suction device is inclined at an inclination angle larger than the inclination angle of the guide rail, the width of the suction device (that is, in the direction orthogonal to the moving path of the guided object passing through the branch guide portion). However, the size of the suction device) can be increased, and a sufficiently strong suction force can be generated. On the other hand, since the guide rail is inclined at an inclination angle smaller than the inclination angle of the suction device, the moving speed of the pushing body in the lateral direction (the direction orthogonal to the transport path) is reduced, and the load is loaded. It is possible to prevent the load from falling when pushing with the push body.

The transfer device according to the second aspect of the present invention uses an electromagnet as a suction device. According to this, since a large electromagnet can be provided, a sufficiently strong attractive force (magnetic force) can be generated.

[0013]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIG. As shown in FIG.
Is a transfer device that receives the load 3 carried in from the plurality of upstream conveyors 2a to 2c and joins it to one downstream conveyor 4 while transferring the load 3 along the transfer path 5.

The structure of the transfer device 1 is as follows. That is, as shown in FIGS. 3 and 8, the frame body 6 of the transport device 1 includes a plurality of upper and lower front and rear frames 7 directed in the front and rear direction, and upper and lower frames of the front and rear frames 7 and 8. A connecting member 9 for connecting the upper and lower frames, which connect the left and right of the upper and lower front and rear frames 7 to each other; It is composed of

As shown in FIGS. 7 and 8, a left and right driven shaft 13 is rotatably disposed at a start end of the frame body 6 and at a rear end thereof is a left and right driven by a motor 14. A directional drive shaft 15 is provided. Sprockets 16 and 17 are provided at both ends of the driven shaft 13 and both ends of the drive shaft 15, respectively, and a chain 18 (an example of an endless rotating body) is wound between the sprockets 16 and 17 facing each other. Have been.

A large number of plate-like slats 19 (an example of a load supporting member) are provided between the pair of left and right chains 18 for carrying the load 3 thereon. 2 on each slat 19
Each shoe 20 (an example of a pressed body) is provided so as to be externally fitted. As shown in FIGS. 6 and 7, each of the shoes 20 is configured to be movable in a direction perpendicular to the transport path 5 (left and right direction), and pushes and moves the load 3 placed on the slat 19 in the left and right direction. Things.

As shown in FIG. 4, a roller shaft 21 is suspended from the bottom of each shoe 20.
A roller 22 (an example of a guided body) that is rotatable around a vertical axis is provided. The roller 22 is made of a magnetic material such as iron. The lower end of the roller shaft 21 projects below the roller 22.

As shown in FIG. 3, the transport device 1 has a forward path A (FIG. 8) in which each slat 19 moves from the upper side to the lower side.
), A pair of left and right end straight guides 24 and a pair of left and right center straight guides 25 for guiding the rollers 22 in the straight forward direction from the front to the rear along the transport path 5, and the end straight guides 24. And a pair of left and right branch guide portions 26 for guiding the roller 22 in a direction orthogonal to the transport path 5. Note that the both end straight guide portions 24 are located on the left and right end portions of the transport device 1 and on the upper side, and the both center straight guide portions 25 are located on the central portion and the lower side between the both end straight guide portions 24. The branch guide portion 26 is inclined between the end straight guide portion 24 and the central straight guide portion 25 facing each other.

As shown in FIG. 2, the end straight guide portion 24 is provided with straight end guide rails 28 that extend linearly in the front-rear direction along the transport path 5. The end guide rails 28 for straight movement are located on the upper left and right frames 10.
It is supported by. Further, as shown in FIG. 9, the two central straight guide portions 25 are provided with resin straight center guide rails 29 linearly extending in the front-rear direction along the transport path 5. As shown in FIG. 10, the central straight guide rail 29 is supported by upper left and right frames 10 via brackets 36.

As shown in FIGS. 2 and 3, the branch guide 26 is provided with the roller 22 and the end straight guide 24.
A plurality of suction devices 31 for sucking from the diverter to the branch guide portion 26;
Roller shaft 21 of roller 22 sucked into branch guide 26
There are provided a plurality of start end guides 32 for guiding the lower end of the roller, and a plurality of branch guide rails 33 for guiding the roller 22 to the central straight guide portion 25 continuously from the respective start end guides 32.

As shown in FIG. 5, the guide rails 33 for branching are supported by upper left and right frames 10 via brackets 37, and the rollers 22 are supported by the guide rails 28, 29, and 33, respectively. You will be guided and move. Also,
As shown in FIG. 1, each of the suction devices 31 includes a pair of front and rear permanent magnets 31a and 31b, and an electromagnet 31c provided between the permanent magnets 31a and 31b.

Also, as shown in FIG. 1 and FIG.
Of the branch guide rail 33 of the
Oblique angle A₁And the other branch guide rail 33 is carried.
Constant inclination angle A with respect to the feed path 5_TwoInclined
Tilt angle A₁> Tilt angle A_TwoIn a relationship. In addition, each sucking
The pulling device 31 is connected to the start end (ie,
(Outer end), and as shown in FIG.
Each inclination angle A of the branch guide rail 33₁, A_TwoLarger than
At an appropriate inclination angle B. (That is, A ₁<B,
A_Two<B. The inclination angle A₁, A_Two, B, A₁= 2
5 °, A_Two= 20 °, B = 30 °,
It is not limited to only this angle.

As shown in FIGS. 9 and 10, the end of each of the branch guide rails 33 is configured to bend in the left-right direction C (ie, the direction orthogonal to the transport path 5) when subjected to a large force. Further, a permanent magnet 34 is provided at the end (i.e., the inner end) of each of the branch guide rails 33.
Is provided. The upper left and right frames 10 also have shock absorbers 3 for buffering the impact when the roller 22 enters the central straight guide section 25 from each branch guide section 26.
9 are provided.

That is, the cushioning device 39 is provided on the angled front-rear connection frame 45 for connecting the end portions of the branch guide rails 33 to each other, and on the upper left and right frames 10. Frames 46 facing each other in the directions and the guide rails 3 for branching
3, a compression coil spring 40 for urging the end portion of the compression coil spring 40 toward the straight guide rail 29, a spring seat 41 fitted at both ends of the compression coil spring 40, and the compression coil spring 40 via the spring seat 41. A bolt 42 and a nut 43 in the left-right direction C to be supported, and a cylindrical collar 44 that regulates a gap between the end of each of the branch guide rails 33 and the straight guide center rail 29 to be equal to or less than a predetermined gap. It is composed of

The bolts 42 are provided on each of the left and right sides, two each in the front and rear directions, and are respectively inserted from the fixed frame 46 to the connection frame 45. The collar 44, the compression coil spring 40, and the spring seat 41 are respectively fitted to bolts 42, and the collar 44 is located between the connecting frame 45 and the fixed frame 46. Also, the compression coil spring 4
0 and the spring seat 41 are located outside the connection frame 45, and are fixed by being sandwiched between the nut 43 screwed to the bolt 42 and the connection frame 45.

In the lower left and right frames (not shown), the rollers 22 located at both ends of the slats 19 are moved in the rectilinear direction (see FIG. 8) on the return path (see FIG. 8) where each slat 19 returns from the lower side to the upper side. And a return guide rail (not shown) for returning the roller 22 moved to the central portion on the outward pass to the two ends of the slat 19 again. Is provided.

The operation of the above configuration will be described below. When the drive shaft 15 is rotationally driven by the electric motor 14, each slat 19 rotates together with both the left and right chains 18 via the respective sprockets 16 and 17. Then, as shown in FIGS. 1 and 2, the electromagnet 31c of each suction device 31 is used.
When the power is not supplied to the roller, the roller 22 of each shoe 20 is guided by the straight end rail 28 and moves on the end straight guide portion 24, so that each shoe 20 travels along both ends of the slat 19 along the transport path 5. Move straight from front to back.

When the electromagnet 31c of each suction device 31 is energized, the roller 22 of each shoe 20
By the magnetic force of the electromagnet 31c and the permanent magnets 31a and 31b, the end straight guide 24 is attracted to the branch guide 26. First, at the start end of the branch guide 26, as shown in FIG.
As shown in FIG. 4, the lower end of the roller shaft 21 of each shoe 20 is guided by a start guide 32, and thereafter, as shown in FIG.
Subsequently, the roller 22 of each shoe 20 moves on the branch guide section 26 while being guided by each branch guide rail 33 as shown in FIG. Thereafter, as shown in FIG. 9, each of the rollers 22 enters the central straight guide portion 25 from the branch guide portion 26 and straightens the central straight guide portion 25 backward while being guided by the straight center rail 29. Go to
As a result, each shoe 20 moves in the direction perpendicular to the transport path 5 from both ends of the slat 19 and reaches the center of the slat 19.

Accordingly, as shown in FIG. 7, the load 3 carried from the central upstream conveyor 2b to the center of the slat 19 of the transport device 1 moves the shoe 20 at both ends of the slat 19 as described above. The slats 19 are moved straight forward from the front along the transport path 5 to the rear.
Is transported along the transport path 5 to the conveyor 4 on the downstream side.

The load 3 carried from the upstream conveyor 2a at one end to one end of the slat 19 of the transfer device 1 is
The shoe 2 located at one end of the slat 19 as described above
0 is moved toward the center in the direction orthogonal to the conveyance path 5, and is pushed by the shoe 20 to move from one side end of the conveyance device 1 to the center.
Transported to

Similarly, the load 3 loaded from the upstream conveyor 2c at the other end to the other end of the slat 19 of the transfer device 1
Moves the shoe 20 located at the other end of the slat 19 in the direction orthogonal to the transport path 5 toward the center, and is pushed by the shoe 20 to move from the other side end of the transport device 1 to the center. For this purpose, the sheet is conveyed to the downstream conveyor 4.

In such a transport device 1, as shown in FIG. 1, the inclination angle B of each suction device 31 is set to be larger than each inclination angle A ₁ , A ₂ of the branch guide rail 33. The width W of each suction device 31 (that is, the size of the suction device 31 in the direction orthogonal to the moving path 47 of the roller 22 passing through the branch guide 26) is increased, and as a result, a large electromagnet 31c is installed. And a sufficiently strong attractive force (magnetic force) can be generated. Conversely, since the inclination angles A ₁ and A ₂ of the branch guide rails 33 are set smaller than the inclination angle B of the suction device 31, each shoe 2
The moving speed of the load 3 in the lateral direction X (that is, the direction orthogonal to the transport path 5) becomes slow, and the load 3 can be prevented from tipping over when the load 3 is pushed by the shoe 20.

As shown in FIG. 9, the rollers 22
When entering the central straight guide portion 25 from the branch guide portion 26, it is attracted by the magnetic force of the permanent magnet 34, so that the momentum of the roller 22 is weakened. Can be prevented. At this time, the terminal end of the branch guide rail 33 receives the pressing force of the roller 22 and opposes the urging force of the compression coil spring 40.
Together with the connecting frame 45, it is slightly bent along the axial direction of the bolt 42 (that is, in the left-right direction C) in a direction away from the straight-travel center rail 29 outward. Thereby, the roller 22 can smoothly bend from the branch guide portion 26 and enter the central straight guide portion 25. Further, since the straight rail 29 is made of resin, noise when the roller 22 comes into contact with the straight rail 29 can be reduced.

In the above embodiment, as shown in FIG.
Although three upstream conveyors 2a to 2c are installed, the number is not limited to three, and a plurality of upstream conveyors 2a to 2c may be installed. Although one downstream conveyor 4 is provided, a plurality of downstream conveyors 4 may be provided.

In the embodiment, the upstream conveyor 2
Although the transport device 1 that joins one downstream conveyor 4 while transporting the load 3 loaded from a to 2c has been described, a transport device that branches the load 3 from the transport path 5 may be used. .

Further, in the embodiment, as shown in FIG. 3, in the different angles of the inclination angle A ₂ of the inclination angle A ₁ and the other branching guide rail 33 of one of the left and right branches for guide rails 33 However, the inclination angle may be the same.

In the embodiment, as shown in FIG. 7, the load 3 is pushed by a plurality of shoes 20 and moved in parallel, but the load 3 may be moved obliquely.

[0038]

As described above, according to the first aspect of the present invention, since the suction device is inclined at an inclination angle larger than the inclination angle of the guide rail, the width of the suction device (ie, the object passing through the branch guide portion) is inclined. The size of the suction device (in the direction orthogonal to the moving path of the guide) is increased, and a sufficiently strong suction force can be generated. On the other hand, since the guide rail is inclined at an inclination angle smaller than the inclination angle of the suction device, the moving speed of the pushing body in the lateral direction (the direction orthogonal to the transport path) is reduced, and the load is loaded. It is possible to prevent the load from falling when pushing with the push body.

According to the second aspect of the present invention, since a large electromagnet can be provided, a sufficiently strong attractive force (magnetic force) is obtained.
Can occur.

[Brief description of the drawings]

FIG. 1 is a plan view showing a difference in inclination angle between a suction device and a branch guide rail of a transport device according to an embodiment of the present invention.

FIG. 2 is a plan view from the end straight guide portion of the transfer device to the start end of the branch guide portion.

FIG. 3 is a plan view showing an arrangement of guide rails of an end straight guide unit, a center straight guide unit, and a branch guide unit of the transfer device.

FIG. 4 is a front view of a shoe guided by a starting end guide of the transfer device.

FIG. 5 is a front view of a shoe guided by a branch guide rail of the transfer device.

FIG. 6 is a plan view of a shoe provided on a slat of the transfer device.

FIG. 7 is a plan view of the transfer device.

FIG. 8 is a side view of the transport device.

FIG. 9 is a plan view from the terminal end of the branch guide of the transfer device to the central straight guide.

FIG. 10 is a front view of a buffer device of the transport device.

FIG. 11 is a plan view of a conventional transport device.

FIG. 12 is a plan view from a straight guide portion to a start end portion of a branch guide portion of a conventional transfer device, and shows a case where an inclination angle between a suction device and a guide rail is set small.

FIG. 13 is a plan view from the straight guide portion to the start end of the branch guide portion of the conventional transfer device, showing a case where the inclination angle between the suction device and the guide rail is set large.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Conveying apparatus 3 Load 5 Conveying path 18 Chain (endless rotating body) 19 Slat (load supporting member) 20 Shoe (loading body) 22 Roller (guided body) 24 End straight guide part 26 Branch guide part 31 Suction device 31c electromagnet 33 branching guide rail A _1, A _2, B tilt angle

Claims (2)

[Claims] An endless rotating body disposed along a transport path is provided with a plurality of load supporting members for loading and transporting a load, and the load supporting members are movable in a direction orthogonal to the transport path. A pressed body is provided, a guided body is provided on the back surface side of each of the pressed bodies, a straight guide portion that guides the guided body in a straight traveling direction along a transport path, and a branch from the straight guide portion. A branch guide portion for guiding the guided body in a direction orthogonal to the transport path is formed, and the branch guide portion includes a plurality of suction devices for suctioning the guided body from the straight guide portion to the branch guide portion. A plurality of guide rails for guiding the guided body sucked to the branch guide portion, wherein each of the guide rails is inclined at a fixed inclination angle with respect to the transport path, and each of the suction devices is provided with a corresponding one of the guide rails. Provided at the beginning of the
A conveyance device characterized in that the conveyance device is inclined at an inclination angle larger than the inclination angle of the guide rail. 2. The transfer device according to claim 1, wherein an electromagnet is used as the suction device.