JP5657056B2 - Magnetic transfer device - Google Patents

Description

  The present invention relates to a magnet type conveying apparatus.

  Japanese Patent Application Laid-Open No. 2004-151561 discloses a transport device including a plurality of rollers.

Japanese Utility Model Publication No. 6-87316

  In this transport device, a roller with a built-in motor is rotatably supported between a pair of frames, and each of a plurality of rollers provided in the longitudinal direction of the frame is rotated by the motor and mounted on the transport device. The placed object is transported.

In this transport device, the rotation of each roller is controlled to transport the object to be transported, so that the configuration is more complicated than the conventional transport device, and the manufacturing cost is increased.
Therefore, it is required to provide a transport device having a simpler configuration at a low cost.

The present invention comprises a rail provided with a plurality of rollers rotatably provided in the conveyance direction of the object to be conveyed, and a stack of rails that are vertically stacked with the rollers in contact with each other.
A magnet disposed below the transport rail and capable of moving forward and backward in the transport direction by a driving means;
Among the rails constituting the transport rail, the roller of one rail located on the magnet side is composed of a magnetic material, and the roller of the one rail is rotated by the magnetic force of the magnet moving in the transport direction to rotate. The roller of the other rail is rotated by the roller of the one rail, and the transported object placed on the other rail is moved in the transport direction.

According to the present invention, when the magnet is moved in the transport direction of the object to be transported on the transport rail, the roller of one rail positioned on the magnet side is rotated by the magnetic force of the magnet, and the roller of this one rail contacts. The other rail roller rotates.
At this time, when the moving direction of the magnet is the conveying direction of the object to be conveyed in the conveying rail, the rotation direction of the roller of the other rail is the rotation in the direction of moving the object to be conveyed in the conveying direction, and the other roller that rotates Since the position of this is sequentially changed in the transport direction of the transported object as the magnet moves, the transported object placed on the other roller moves in the transport direction.
The roller of this magnet type conveyance device is not a roller with a built-in motor as in the conventional conveyance device, but a roller that is simply rotatably supported on the rail. Become. Therefore, the transport device can be provided at a lower cost.

It is a figure explaining a magnet type conveyance device. It is sectional drawing of a magnet type conveying apparatus. It is a figure explaining a magnet type conveyance device. It is a figure explaining operation | movement of a magnet type conveying apparatus.

FIG. 1 is a side view for explaining the overall configuration of the magnet-type transport device 1, illustrating the magnet-type transport device 1 according to the embodiment. In FIG. 1, the side covers 34 and 44 of the upper rail 3 and the lower rail 4 are partially cut away, and the side covers 33 and 34 of the upper rail 3 and the side cover of the lower rail 4 are illustrated. The side surfaces of the rollers 31 and 41 and the magnet 6 positioned between 43 and 44 are shown.
2A and 2B are cross-sectional views of the magnet-type transport device 1 according to the embodiment, where FIG. 2A is a cross-sectional view taken along line AA in FIG. 1 and FIG. 2B is a cross-sectional view taken along line BB in FIG. is there.
3A and 3B are diagrams for explaining the principle of conveyance of the workpiece W in the magnetic conveyance device 1 according to the embodiment. FIG. 3A is a side view, and FIG. 3B is an enlarged view of the region A in FIG. (C) is an enlarged view of the region B in (a), and (d) is an enlarged view of the region C in (a). It is the figure which showed the part in the cross section.

As shown in FIG. 1, the magnet-type conveyance device 1 according to the embodiment includes a conveyance rail 2 in which an upper rail 3 and a lower rail 4 are vertically stacked, and a magnet 6 disposed below the lower rail 4. The drive mechanism 5 is configured to move the magnet 6 forward and backward in the longitudinal direction of the transport rail 2.
In this magnet type conveying apparatus 1, when the magnet 6 is moved by the drive mechanism 5, the roller 41 of the lower rail 4 is rotated by the magnetic force of the magnet 6, and the roller 31 of the upper rail 3 that contacts this roller 41 is rotated. By moving the magnet 6 in the workpiece conveyance direction (left direction in the figure) on the conveyance rail 2, the workpiece W placed on the upper rail 3 is moved in the conveyance direction by the rotating roller 31. Can be moved to.

As shown in FIG. 2A, the upper rail 3 includes a cylindrical roller 31, a rotating shaft 32 that rotatably supports the roller 31, and a side cover 33 that supports one end and the other end of the rotating shaft 32. , 34.
The side covers 33 and 34 are plate-like members having a predetermined length in the conveyance direction of the workpiece W. Between these side covers 33 and 34, the rollers 31 supported by the rotary shaft 32 are connected to the side covers 33 and 34. A plurality of them are provided at equal intervals along the longitudinal direction of 34.
In this state, the rotation shafts 32 of the rollers 31 are aligned in a direction perpendicular to the conveyance direction of the workpiece W, and each of the rotation shafts 32 is positioned on a common axis X1 when viewed from the conveyance direction side. doing.

  The roller 31 has a lower outer peripheral surface 31 a disposed below the lower ends 33 a and 34 a of the side covers 33 and 34, and an upper outer peripheral surface 31 b than the upper ends 33 b and 34 b of the side covers 33 and 34. It is provided in a state of being arranged on the lower side.

  In the embodiment, the outer peripheral surface 31b on the upper side of the roller 31 is a mounting surface for the workpiece W, and the upper ends 33b and 34b of the side covers 33 and 34 are disposed on the side of the workpiece W mounted on the roller 31. Since the side is positioned, the workpiece W moving in the conveyance direction side is prevented from falling from both sides of the upper rail 3.

  As described above, the roller 31 of the upper rail 3 is rotated by the roller 41 of the lower rail 4 with which the roller 31 contacts. For this reason, the roller 31 is formed of a material having a large friction with respect to the roller 41 of the lower rail 4, and the roller 31 is reliably rotated by the rotation of the roller 41.

The lower rail 4 includes a cylindrical roller 41, a rotating shaft 42 that rotatably supports the roller 41, and side covers 43 and 44 that support one end and the other end of the rotating shaft 42.
The side covers 43 and 44 are plate-shaped members having a predetermined length in the conveyance direction of the workpiece W. Between these side covers 43 and 44, the rollers 41 supported by the rotation shaft 42 are connected to the side covers 43 and 44. A plurality of them are provided at equal intervals along the longitudinal direction of 44.
In this state, the rotation shafts 42 of the rollers 41 are aligned in a direction orthogonal to the conveyance direction of the workpiece W, and each of the rotation shafts 42 is on a common axis X2 when viewed from the conveyance direction side. positioned.

  The roller 41 has an upper outer peripheral surface 41b disposed above the upper ends 43b, 44b of the side covers 43, 44, and a lower outer peripheral surface 41a disposed above the lower ends 43a, 44a of the side covers 43, 44. It is provided in a state where it is arranged.

  The roller 41 is formed of a magnetic material such as iron (a material attracted by the magnetic force of the magnet 6), and is rotated by the magnetic force of the moving magnet 6 when the magnet 6 moves in the conveyance direction of the workpiece W. It is like that.

In the magnet type conveying apparatus 1 according to the embodiment, the upper rail 3 and the lower rail 4 are vertically stacked to constitute the conveying rail 2.
In this state, the upper rail 3 and the lower rail 4 are provided in a state where the rollers (rollers 31 and 41) are in contact with each other. As shown in FIG. In the conveying direction), the rollers 31 and the rollers 41 are alternately positioned.

Therefore, except for the rollers positioned at both ends in the longitudinal direction of the transport rail 2, the roller 31 contacts the two rollers 41 positioned on the lower side thereof, and the roller 41 contacts the two rollers 31 positioned on the upper side thereof. doing.
Therefore, the two rollers 31 positioned on the upper side of the roller 41 are rotated by the rotation of the roller 41 of the lower rail 4.

As shown in FIGS. 2A and 2B, plate-shaped guide rails 431 and 441 are provided at the lower ends 43 a and 44 a of the side covers 43 and 44 so as to face each other.
The guide rails 431 of the side cover 43 and the guide rails 441 of the side cover 44 extend to the side covers 44 and 43 side, respectively, and are formed with a predetermined length L. The upper surfaces 431b and 441b are magnets described later. 6 is a rolling surface of a guide wheel 66 provided in the motor 6.

As shown in FIG. 3, below the lower rail 4, a drive mechanism 5 that moves the magnet 6 in the conveyance direction of the workpiece W is provided.
The drive mechanism 5 employs a rodless cylinder configured to move the moving block 56 using air pressure, and a guide shaft 51 that extends linearly below the lower rail 4 along the conveyance direction of the workpiece W. And a moving block 56 provided so as to be movable back and forth in the longitudinal direction of the guide shaft 51.

The guide shaft 51 is a cylindrical member whose one end (front end) and the other end (base end) in the longitudinal direction are sealed with sealing members 52 and 53, and the base end portion on the sealing member 53 side includes A connecting member 55 is attached.
The connecting member 55 extends in the direction perpendicular to the guide shaft 51, and a position offset radially outward from the extension line (axis line Xa) of the guide shaft 51 can be rotated by the support shaft 45 provided on the lower rail 4. It is supported.
Therefore, the guide shaft 51 in the magnet type conveying apparatus 1 is provided so as to be rotatable in a circumferential direction around a rotation axis X3 (axis line) parallel to the rotation axes (axis lines X1 and X2) of the rollers 31 and 41. In addition, the tip side where the sealing member 52 is provided moves in the vertical direction.

The sealing members 52 and 53 are provided with compressed air supply and discharge ports 52a and 53a that open in the radial direction, and supply and discharge of compressed air to the inner space 511 extending in the longitudinal direction in the guide shaft 51. These are made through the supply / discharge ports 52a and 53a.
A cylindrical plunger 54 made of a magnet is provided in the inner space 511 of the guide shaft 51.
The plunger 54 has an outer diameter that matches the inner diameter D <b> 2 of the inner space 511, and can move forward and backward in the longitudinal direction of the inner space 511.

  In the embodiment, when compressed air is supplied into the guide shaft 51 from the supply / exhaust port 53a on the right side in the drawing, the plunger 54 is supplied with air pressure acting on the surface 54a of the plunger 54 on the supply / exhaust port 53a side. When the compressed air is supplied from the supply / exhaust port 52a on the left side in the drawing, the plunger 54 is moved by the air pressure acting on the surface 54b of the plunger 54 on the supply / exhaust port 52a side. It moves to the supply / discharge port 53a side (right side in the figure).

The guide shaft 51 is formed with the same outer diameter D1 over the entire length in the longitudinal direction, and a moving block 56 is attached to the guide shaft 51 by extrapolation.
The moving block 56 is provided by inserting a guide shaft 51 through an insertion hole 57 formed in the center thereof, and is provided so as to be movable back and forth in the longitudinal direction of the guide shaft 51.
The sealing members 52 and 53 attached to both ends of the guide shaft 51 also serve as stoppers for the moving block 56 that moves in the longitudinal direction. In the guide shaft 51, the moving block 56 is located between the sealing members 52 and 53. It is designed to move forward and backward.

  The moving block 56 is formed of a magnetic material such as iron (a material attracted by the magnetic force of the plunger 54 (magnet) in the guide shaft 51), and when the plunger 54 moves in the guide shaft 51, the moving block 56 of the plunger 54 moves. It is pulled by the magnetic force and moves in the same direction as the plunger 54.

As shown in FIG. 2A, when viewed from the longitudinal direction of the guide shaft 51, the upper surface 56 a on the lower rail 4 side of the moving block 56 is relative to the outer peripheral surface 41 a on the lower side of the roller 41 of the lower rail 4. The magnet 6 is attached to the upper surface 56a.
Therefore, when the moving block 56 moves in the longitudinal direction of the guide shaft 51, the magnet 6 also moves in the same direction as the moving block 56.

As shown in FIG. 2B, the magnet 6 has a width W <b> 1 smaller than the separation distance L <b> 1 of the side covers 43, 43 and the width Wx of the rollers 31, 41 when viewed from the longitudinal direction of the guide shaft 51. The guide wheels 66 and 66 are provided on both sides thereof.
The guide wheels 66 and 56 are provided at positions spaced apart from the side surface 6b of the magnet 6 in the width direction, and are provided with two gaps in the longitudinal direction of the magnet 6 (left and right direction in the figure) (see FIG. 1). ). Therefore, a total of four guide wheels 66 are provided on the magnet 6.

As shown in FIG. 3, in the magnet type conveyance device 1, when moving the workpiece W in the conveyance direction, in order to rotate the rollers 31 and 41 of the upper rail 3 and the lower rail 4, the conveyance direction of the workpiece W ( The magnet 6 is moved to the left side in the figure, and this movement of the magnet 6 moves the moving block 56 of the drive mechanism 5 along the guide shaft 51 in the workpiece conveyance direction (left side in the figure). Is done.
Here, the guide shaft 51 is cantilevered by the side covers 43 and 44 of the lower rail 4 on the upstream side (right side in the figure) in the workpiece conveyance direction. Therefore, when the moving block 56 (magnet 6) is moved to the left in the drawing in order to move it in the conveyance direction of the workpiece W, the guide shaft 51 rotates the guide shaft 51 around the rotation axis X3. The force to move the tip side (sealing member 52 side) downward away from the lower rail 4 is large in accordance with the mass of the moving block 56 and the magnet 6 and the distance from the rotation axis X3. Now it works.

  In the embodiment, the guide rails 431 and 441 are provided on the side covers 43 and 44 of the lower rail 4 so that the guide shaft 51 does not rotate around the rotation axis X3 while the workpiece W is being conveyed. When the guide shaft 51 rotates about the rotation axis X3 and the tip end side of the guide shaft 51 is moved downward in the figure, the guide wheel 66 provided on the magnet 6 becomes the guide rail 431, By contacting 441, rotation of the guide shaft 51 around the rotation axis X3 is prevented.

  Here, the guide rails 431 and 441 have a predetermined length within a range avoiding the conveyance start position (initial position) of the workpiece W on one end side in the longitudinal direction of the side covers 43 and 44 and the conveyance end position on the other end side. L is formed (see FIG. 1). Therefore, when the magnet 6 reaches the conveyance end position on the distal end side of the guide shaft 51, the rotation of the guide shaft 51 around the rotation axis X3 is permitted, and the magnet 6 is moved from the lower rail 4 (roller 41). It is designed to leave downward.

Hereinafter, the operation of the magnet type conveying apparatus 1 will be described with reference to FIGS. 3 and 4.
FIG. 4 is a diagram for explaining the operation of the magnet-type transport device 1, and FIG. 4 (a) is a diagram illustrating a state in which the magnet 6 is disposed at the transport start position (initial position) of the workpiece W. ) Is a diagram showing the state after the magnet 6 has reached the transfer end position of the workpiece W (the position at which the transfer of the workpiece W is ended), and (c) is a diagram illustrating the movement of the magnet 6 toward the initial position. It is a figure which shows the state on the way.

  When the workpiece W is transferred by the magnet-type transfer device 1, the workpiece W is placed on the transfer rail 2 (upper rail 3) in a state where the magnet 6 is disposed at the transfer start position (initial position) of the workpiece W. (See FIG. 4A).

In this state, when compressed air is supplied into the inner space 511 from the supply / exhaust port 53a (see FIG. 3C) on one end side of the guide shaft 51, the plunger 54 is pushed by the air pressure, and the inner space 511 is moved to the supply / discharge port 52a side (left side in FIG. 3D, see arrow A1).
Then, the moving block 56 extrapolated to the guide shaft 51 is pulled by the magnetic force of the plunger 54 (magnet) and moves in the same direction as the plunger 54. It moves toward the conveyance end position of W (see arrow A2 in the figure).

  At this time, the iron roller 41 of the lower rail 4 positioned on the upper side of the magnet 6 is pulled by the magnetic force of the moving magnet 6 and moves in the direction indicated by the arrow A3 in the figure (clockwise direction in the figure). Will rotate.

Here, the roller 41 of the lower rail 4 is provided in contact with the roller 31 of the upper rail 3, and the roller 31 is formed of a material (for example, iron) having a high frictional resistance with the roller 41 of the lower rail 4. Therefore, the roller 31 is rotated by the rotating roller 41 in the direction indicated by the arrow A4 in the figure (counterclockwise direction in the figure).
The rotation direction of the roller 31 is a rotation in a direction in which the workpiece W placed on the upper rail 3 is moved downstream in the conveyance direction (conveyance end position side, see arrow A5). The placed work W is moved toward the transfer end position.

  Here, since the positions of the rotating rollers 41 and 31 change following the magnet 6 moving toward the conveyance end position, the workpiece W placed on the upper rail 3 is moved to the magnet 6 (moving block 56). At the same time, the workpiece W moves toward the conveyance end position.

  At this time, the guide shaft 51 that supports the magnet 6 is movable in the vertical direction on the sealing member 52 side (conveyance end position side) at the tip thereof, and the magnet 6 is moved to the conveyance end position on the left side in the drawing. When moving toward the guide shaft 51, the guide shaft 51 rotates the guide shaft 51 around the rotation axis X <b> 3, and moves the distal end side (sealing member 52 side) downward away from the lower rail 4. However, it acts at a size corresponding to the mass of the moving block 56 and the magnet 6 and the distance from the rotation axis X3.

  In the embodiment, the guide rails 431 and 441 are provided on the side covers 43 and 44 of the lower rail 4 so that the guide shaft 51 does not rotate around the rotation axis X3 while the workpiece W is being conveyed. When the guide shaft 51 rotates about the rotation axis X3 and the tip end side of the guide shaft 51 moves downward in the figure, the guide wheel 66 provided on the magnet 6 causes the guide rails 431 and 441 to move. The guide shaft 51 is prevented from rotating around the rotation axis X3.

Here, in the lower rail 4, the guide rails 431 and 441 are provided in a range that avoids the transfer start position (initial position) of the upstream work W and the downstream transfer end position in the transfer direction of the work W. . Therefore, the rotation of the guide shaft 51 around the rotation axis X3 is prevented until the magnet 6 reaches the conveyance end position on the distal end side of the guide shaft 51.
When the magnet 6 reaches the workpiece transfer end position, the guide wheel 66 provided on the magnet 6 at that time is disengaged from the guide rails 431 and 441, so that the guide shaft 51 rotates around the rotation axis X3. Thus, the tip side where the magnet 6 is positioned is moved downward, which is the direction away from the roller 41 of the lower rail 4 (see FIG. 4B).

When the magnet 6 moves away from the lower rail 4, the rotation of the rollers 41 and 31 at the conveyance end position is not regulated by the magnetic force of the magnet 6. The work W transported to the position can be pulled out toward the front end side of the transport rail 2 while rotating the roller 31 and taken out from the transport rail 2 (upper rail 3).
Therefore, the work of taking out the work W carried to the transfer end position from the transfer rail 2 can be performed without any trouble.

  In the embodiment, a stopper 70 is provided below the transport rail 2 (lower rail 4), the guide shaft 51 rotates around the rotation axis X3, and the distal end at which the sealing member 52 is provided. When the side is moved downward, which is a direction away from the roller 41, when the moving block 56 moved to the tip side of the guide shaft 51 comes into contact with the flat portion 71 on the lower side of the stopper 70, the guide shaft 51. The rotation of is stopped.

  In this state, the guide shaft 51 is held at an angular position where the separation distance from the lower rail 4 (roller 41) decreases from the distal end where the sealing member 52 is provided toward the proximal end on the rotating shaft X3 side. ing.

  Therefore, when compressed air (driving fluid) is supplied into the inner space 511 from the supply / discharge port 52a (see FIG. 3B) on the other end side of the guide shaft 51 from this state, the plunger 54 And is moved to the supply / exhaust port 53a side (the right side in FIG. 4B) in the inner space 511.

  Then, since the moving block 56 extrapolated to the guide shaft 51 is pulled by the magnetic force of the plunger 54 (magnet) and moves in the same direction as the plunger 54, the magnet 6 attached to the moving block 56 is also shown in FIG. It moves toward the conveyance start position (initial position) of the middle right workpiece W.

Then, as the magnet 6 approaches the transport start position, the separation distance between the magnet 6 and the iron roller 41 of the lower rail 4 decreases, and when the magnet 6 reaches the vicinity of the transport start position, the magnet 6 Since the magnetic force of the magnet 6 attracts the roller 41, the guide shaft 51 that supports the magnet 6 rotates around the rotation axis X3.
When the magnet 6 is finally returned to the conveyance start position shown in FIG. 4A, the guide shaft 51 that supports the magnet 6 is in an initial state where it is horizontally disposed with respect to the lower rail 4. , Will be returned.

  In the embodiment, the flat portion 72 on the upper side of the stopper 70 is located near the rotation axis X3, and when the magnet 6 returns to the conveyance start position, the moving block 56 to which the magnet 6 is attached is By riding on the flat portion 72, the guide shaft 51 is held in an initial state in which the guide shaft 51 is disposed horizontally with respect to the lower rail 4.

  Further, an inclined portion 73 is provided between the lower flat portion 71 and the upper flat portion 72 so that the separation distance from the lower rail 4 becomes smaller toward the upstream side in the conveyance direction of the workpiece W. It has been. Therefore, the moving block 56 that supports the magnet 6 slides on the inclined portion 73 while the magnet 6 is moved toward the conveyance start position, and the moving block 56 that slides on the inclined portion 73. Since the guide shaft 51 is rotated around the rotation axis X3 as the position approaches the conveyance start position, the return to the initial state where the guide shaft 51 is disposed horizontally with respect to the lower rail 4 is performed on the inclined portion 73. Assisted by.

As described above, the workpiece W placed on the conveyance rail 2 is moved from the conveyance direction start position to the conveyance end position only by moving the plunger 54 forward and backward in the longitudinal direction of the guide shaft 51 (the conveyance direction of the workpiece W) by the compressed air. Can be moved toward.
And since the rollers 31 and 41 of this magnet type conveyance device 1 are not rollers with built-in motors as in the conventional conveyor device, but are rollers (free rollers) that are simply rotatably supported on the rail. A transport device with a simple configuration that can be provided at a lower cost than in the past.

As described above, in the embodiment, the upper rail 3 and the lower rail 4 on which the plurality of rollers 31 and 41 are rotatably provided in the conveyance direction of the workpiece W (conveyed object) are brought into contact with the rollers 31 and 41. A transport rail 2 configured to be stacked one above the other in a state where
A magnet 6 disposed below the transport rail 2 and capable of moving forward and backward in the transport direction by a drive mechanism 5 (drive means);
The roller 41 of the lower rail 4 located on the magnet 6 side is composed of at least a magnetic material (iron), and the roller 41 of the lower rail 4 that rotates by rotating the roller 41 of the lower rail 4 with the magnetic force of the magnet 6 that moves in the conveying direction. 41, the roller 31 of the upper rail 3 is rotated so that the work W placed on the lower rail 4 is moved in the transport direction.

If comprised in this way, if the magnet 6 is moved, the roller 41 of the lower rail 4 will rotate with the magnetic force of the magnet 6, and the roller 31 of the upper rail 3 which the roller 41 of this lower rail 4 will contact will rotate.
At this time, if the moving direction of the magnet 6 is the conveying direction of the workpiece W in the conveying rail 2, the rotation direction of the roller 31 of the upper rail 3 is a rotation in a direction in which the workpiece W is moved in the conveying direction. Since the position of the third roller 31 sequentially changes in the direction of conveyance of the workpiece W as the magnet 6 moves, the workpiece W placed on the roller 31 of the upper rail 3 moves in the conveyance direction.
The rollers 31 and 41 of the magnet type conveying device 1 are not rollers with built-in motors as in the conventional conveyor device, but are rollers (free rollers) that are simply rotatably supported on the rail. Also, the transport device can be configured with a simple configuration. Therefore, the transport device can be provided at a lower cost.

The magnet 6 is supported by a moving block 56 provided on a guide shaft 51 (guide) extending in the conveyance direction of the workpiece W on the lower side of the lower rail 4 so as to be movable forward and backward.
One end of the guide shaft 51 located on the upstream side (conveyance start position side) in the conveyance direction is rotatable about a rotation axis X3 parallel to the rotation axes X1 and X2 of the rollers 31 and 41. The other end side (conveyance end position side) provided with the sealing member 52 is movable in the circumferential direction around the rotation axis X3.
The lower rail 4 is provided with guide rails 431 and 441 (blocking portions) that abut the guide wheel 66 of the magnet 6 and prevent the guide shaft 51 from rotating in the direction of separating the magnet 6 from the lower rail 4. The guide rails 431 and 441 are configured to be provided in a range from the upstream transfer start position in the transfer direction of the workpiece W to immediately before the downstream magnet 6 reaches the transfer end position.

When the magnet 6 is moved toward the conveyance end position on the other end side of the guide shaft 51 in order to move the workpiece W in the conveyance direction, the guide shaft 51 rotates around the rotation axis X3. The force to move the tip side (sealing member 52 side) downward away from the lower rail 4 causes the mass of the moving block 56 and the magnet 6 and the separation distance from the rotation axis X3. It is designed to work with a size that matches.
If comprised as mentioned above, in the range in which the guide rails 431 and 441 in the conveyance direction are provided, the guide shaft 51 rotates about the rotation axis X3, and the magnet 6 supported by the guide shaft 51 is moved to the lower rail. Even if the guide wheel 66 of the magnet 6 is moved downward in a direction away from the guide rail 4, the guide shaft 51 is prevented from rotating by contacting the guide rails 431 and 441.
Therefore, the magnet 6 moving from the upstream transfer start position in the transfer direction of the workpiece W toward the downstream transfer end position rotates the rollers 41 of the lower rail 4 in order from the upstream side. Therefore, as the roller 41 of the lower rail 4 rotates, the roller 31 of the upper rail 3 is also rotated in order from the upstream side, so that the workpiece W placed on the roller 31 moves downstream on the conveyance direction. It moves toward the conveyance end position.

When the magnet 6 reaches the conveyance end position of the workpiece W, the guide wheel 66 of the magnet 6 is disengaged from the guide rails 431 and 441, so that the guide shaft 51 rotates around the rotation axis X3, and the guide The magnet 6 supported by the shaft 51 is moved away from the lower rail 4.
Here, when the guide shaft 51 is arranged in parallel to the lower rail 4 and the magnet 6 is held on the lower side of the lower rail 4, the rotation of the rollers 41 and 31 positioned on the upper side of the magnet 6 is It is regulated by the magnetic force of the magnet 6. Therefore, if the magnet 6 that has reached the conveyance end position of the workpiece W is arranged as it is below the lower rail 4, the rotation of the rollers 41 and 31 at the conveyance end position is restricted. There is a risk of hindering the ease of taking out the moved workpiece W from the transport rail 2.

With the configuration described above, when the magnet 6 reaches the workpiece conveyance end position, the rotation restriction of the guide shaft 51 is released, and the magnet 6 moves in a direction away from the lower rail 4. In this state, the rotation of the rollers 41 and 31 is not restricted.
Then, the work W transported to the transport end position on the upper rail 3 can be drawn out to the front end side of the transport rail 2 while rotating the roller 31 and taken out from the transport rail 2 (upper rail 3). Therefore, the work for taking out the workpiece W from the transport rail 2 to the transport end position can be performed without any trouble.
Even if the workpiece W is made of a material attracted by a magnet (for example, a magnetic material such as iron), the workpiece W that has reached the conveyance end position can be taken out from the conveyance rail 2 without any trouble.

The rotation axis X3 of the guide shaft 51 is disposed below the lower rail 4, and
Below the lower rail 4, a guide shaft 51 rotated in a direction to separate the magnet 6 from the lower rail 4,
A configuration in which a stopper 70 (lower flat portion 71) is provided to hold at a predetermined position where the distance from the lower rail 4 decreases from the distal end where the sealing member 52 is provided toward the proximal end on the rotation axis X3 side. It was.

With this configuration, when the magnet 6 supported by the guide shaft 51 is moved toward the proximal end side (rotation axis X3 side) of the guide shaft 51, the magnetic body (iron) of the lower rail 4 is removed. The separation distance between the roller 41 and the magnet 6 is reduced.
Then, when the magnet 6 reaches the proximal end side of the guide shaft 51, the magnet 6 is attracted upward on the roller 41 side by the magnetic force of the magnet 6, and the guide shaft 51 brings the magnet 6 closer to the roller 41 (see FIG. The guide shaft 51 can be returned to the initial position arranged horizontally with respect to the lower rail 4 by rotating in the clockwise direction.

  As a result, the work W transporting work placed on the transport rail 2 can be repeatedly performed by merely moving the magnet 6 supported by the guide shaft 51 forward and backward in the longitudinal direction of the guide shaft 51. .

  Furthermore, the drive mechanism 5 (drive means) is provided in an inner space 511 (hollow portion) that extends from the one end side (sealing member 52 side) to the other end side (sealing member 53 side) in the guide shaft 51. When the plunger 54 is composed of a magnet and the compressed air (driving fluid) is supplied to the plunger 54 from the supply / discharge port 53a on one end side of the guide shaft 51 into the inner space 511. When it moves to the other end side (downstream side in the conveyance direction of the workpiece W) and compressed air (driving fluid) is supplied into the inner space 511 from the supply / discharge port 52a on the other end side, the one end side (the conveyance direction of the workpiece W) To the upstream side).

If comprised in this way, the plunger 54 can be moved only by changing the supply port of compressed air, and the magnet 6 can be moved to the longitudinal direction of the guide shaft 51 by this moving plunger 54.
Therefore, the magnet 6 can be moved with a simple configuration of switching the supply port of the compressed air, and the rollers 31 and 41 of the transport rail 2 are rotated by the moving magnet 6 and placed on the transport rail 2. The workpiece W can be transported.

  In the above-described embodiment, the case where the roller 41 of the lower rail 4 is made of iron is exemplified. However, as long as the magnetic body is attracted by the magnet 6, it may be made of other materials. Furthermore, although the case where the roller 31 of the upper rail 3 is iron was illustrated, it is configured by another material such as a resin material under the condition that the roller 31 can rotate following the rotation of the roller 41 of the lower rail 4. You can,

  Furthermore, although the case where the moving block 56 is moved by the plunger 54 made of a magnet is illustrated, the moving block 56 may be omitted and the magnet 6 may be moved directly by the plunger 54. In this case, the plunger 54 does not necessarily need to be a magnet. For example, if the plunger 54 is made of a material attracted by the magnet 6 such as iron, the magnet 6 can be moved in conjunction with the movement of the plunger 54. become.

DESCRIPTION OF SYMBOLS 1 Magnet type conveying apparatus 2 Conveying rail 3 Upper rail 4 Lower rail 5 Drive mechanism 6 Magnet 31 Roller 32 Rotating shaft 33, 34 Side cover 41 Roller 42 Rotating shaft 43, 44 Side cover 45 Support shaft 51 Guide shaft 52, 53 Sealing Member 52a, 53a Supply / exhaust port 54 Plunger 55 Connecting member 56 Moving block 56a Upper surface 57 Insertion hole 66 Guide wheel 431 Guide rail 441 Guide rail 511 Inner space W Workpiece

Claims (5)

A rail provided with a plurality of rollers rotatably provided in the transport direction of the object to be transported, and stacked vertically with the rollers in contact with each other; and
A magnet disposed below the transport rail and capable of moving forward and backward in the transport direction by a driving means;
Among the rails constituting the transport rail, the roller of one rail located on the magnet side is composed of a magnetic material, and the roller of the one rail is rotated by the magnetic force of the magnet moving in the transport direction to rotate. A magnet-type transport characterized in that the roller on one rail is rotated by the roller on the other rail to move the object to be transported placed on the other rail in the transport direction. apparatus. The magnet is supported by a guide extending in the transport direction on the lower side of the one rail so as to be movable forward and backward.
One end of the guide located upstream in the conveying direction is rotatably supported by a rotation shaft parallel to the rotation shaft of the roller, and the other end is circumferentially around the rotation shaft. Can be moved to,
The one rail has a blocking portion that contacts the magnet and prevents the guide from rotating in a direction in which the magnet is separated from the one rail. The magnet type conveying apparatus according to claim 1, wherein is provided in a range up to immediately before reaching a conveyance end position of the object to be conveyed. The pivot shaft of the guide is disposed below the one rail, and
Under the one rail, the guide rotated in the direction of separating the magnet from the one rail is held at a predetermined position where the distance from the one rail decreases from the other end toward the one end. The magnet type conveying apparatus according to claim 2, wherein a stopper is provided.   The magnet-type conveying device according to any one of claims 1 to 3, wherein the roller of the other rail is made of a magnetic material. The drive means has a plunger provided in a hollow portion extending from the one end side to the other end side in the guide,
The plunger is composed of a magnet, and when the driving fluid is supplied from the one end side into the hollow portion, the plunger moves to the other end side, and the driving fluid is supplied from the other end side into the hollow portion. The magnet-type transfer device according to any one of claims 1 to 4, wherein the magnet-type transfer device moves to the one end side.

Images