JP7064741B2 - Transport device - Google Patents

Description

The present invention relates to a method for transporting transport objects having a circular cross section and easily rolling without contacting each other, and a transport device for realizing the method.

As a method of transporting objects such as columns, a large number of medicinal ampoules are placed on a belt conveyor in an upright state, the outlet width is limited downstream of the ampoules, and the second transport path is moved by arranging them in a row and then rotating. A technique for sending to the next process by using a large number of semicircular concave pockets provided on the circumference of the star wheel has been proposed (Patent Document 1). In this method, the width of the carryway is narrowed from both sides downstream of the conveyor belt, and each part of the inclined walls on both sides for narrowing is an endless belt that moves toward the exit aisle on one side and away from the exit aisle on the other side. It is formed by an endless belt that moves in a direction. The two endless belts that move in opposite directions prevent the medicinal ampoule from staying (clogging) at the entrance of the outlet passage.

In addition, a cylindrical roller (work) or the like is placed on the belt conveyor in a random posture, and on the downstream side of the belt conveyor, only one wall in the width direction of the conveyor is tilted so as to gradually approach the other wall, and the work is placed in a random posture. A technique has been proposed that leads to a downstream discharge channel that allows the vehicle to pass through in a row as it is (Patent Document 2). In this method, one inclined wall (second guide means) is provided with a second sub-belt that runs from the upstream side to the downstream side in the transport direction, and the other non-inclined wall (first guide means) near the downstream side of the conveyor. ) Is provided with a first auxiliary belt that travels from the downstream side to the upstream side in the transport direction, so that the work is prevented from staying (clogging) at the entrance of the downstream discharge path.

Japanese Unexamined Patent Publication No. 2006-1710 Japanese Unexamined Patent Publication No. 2013-119463

For example, the surface of a cylindrical roller is subjected to a treatment such as super-finishing at the final stage of manufacturing, so that vibration is reduced and durability is increased when it is used for a bearing of a rotating body. Therefore, after mirror surface treatment such as super-finishing, collision (contact) between cylindrical rollers that may cause scratches on the surface must be avoided.
However, when both of the methods proposed in Patent Document 1 and Patent Document 2 are applied to cylindrical rollers, the cylindrical rollers rub against each other due to the narrowing of the conveyor width on the downstream side of the belt conveyor and are aligned in a row. Even in the moving second transport path (Patent Document 1) or the downstream discharge path (Patent Document 2), the front and rear cylindrical rollers may come into contact with each other, causing scratches or the like on the surface thereof.

The present invention has been made in view of the above-mentioned problems, and is capable of transporting a cylindrical object such as a cylindrical roller or a truncated cone-shaped object such as a conical roller without contacting each other. The purpose is to provide a feeder.

The transport device according to the present invention is a device for transporting an object having a circular cross section. The conveyor has a conveyor with a circulating endless strip of conveyor belt and a conveyor support for the conveyor. A plurality of plate-shaped crosspieces standing outward are arranged on the outer peripheral surface of the conveyor belt at intervals in the circumferential direction. Between adjacent crosspieces, there are a plurality of projecting bodies that project outward from the outer peripheral surface of the conveyor belt and extend in a band shape in the width direction of the conveyor belt, and are lower in height than the crosspieces.
The height of the plurality of protrusions is highest in the one closest to one of the adjacent crosspieces, and the height thereof is lowered as the distance from one of the adjacent crosspieces increases to approximately the center of the adjacent crosspieces.
Further, the height of the plurality of protrusions closest to one of the adjacent crosspieces is the highest, and the height is lowered as the height is farther from the one of the adjacent crosspieces, and the height is the highest among the protrusions in the substantially center of the adjacent crosspieces. The height can be lowered so that the protrusions from the substantially central protrusion to the other of the adjacent crosspieces have the same height.

According to the present invention, it is possible to provide a transport device capable of transporting a cylindrical object such as a cylindrical roller or a truncated cone-shaped object such as a conical roller without contacting each other.

FIG. 1 is a front view of a transport device for a circular object. FIG. 2 is a plan view of the transport device. FIG. 3 is a right side view of the transport device. FIG. 4 is a left side view of the transport device. FIG. 5 is a cross-sectional view taken along the line AA of FIG. FIG. 6 is a diagram showing the posture of the transport device during transport of the cylindrical roller W. FIG. 7 is a diagram showing the relationship between the conveyor belt and the passage sensor and the cylindrical roller. FIG. 8 is a diagram showing an outline of another type of conveyor belt. FIG. 9 is a diagram showing an outline of another type of conveyor belt.

1 is a front view of a transfer device 1 having a circular cross section, FIG. 2 is a plan view of the transfer device 1, FIG. 3 is a right side view of the transfer device 1, FIG. 4 is a left side view of the transfer device 1, and FIG. 1 is a cross-sectional view taken along the line AA.
The transport device 1 (hereinafter referred to as “conveyor device 1”) for transporting an easily rolling object having a circular cross-sectional shape according to the present invention includes a base 2, a conveyor support portion 3, and a conveyor 4.
The base 2 is for supporting the conveyor support portion 3 and the conveyor 4. The base portion 2 is provided with a plate-shaped support portion 11 on the upper portion thereof. The support portion 11 has a rectangular shape in a plan view with the transport direction of the transport device 1 as the longitudinal direction. Here, the "transport direction of the transport device 1" means a direction in which the transport device 1 transports (moves) an object to be transported, for example, a cylindrical roller. Hereinafter, it is abbreviated as "transport direction".

The conveyor support portion 3 is supported by the base portion 2 between the base portion 2 and the conveyor 4, and supports the conveyor 4. The conveyor support portion 3 includes a substrate 12, a horizontal moving plate 13, a support plate 14, a horizontal moving device 15, a conveyor holding plate 16, and a vertical moving device 17.
The substrate 12 is made of a rectangular plank. The substrate 12 is located at the bottom of the conveyor support portion 3. The substrate 12 is connected to the support portion 11 by two sets of linear guides 18 and 18 so that the longitudinal direction thereof is aligned with the longitudinal direction of the support portion 11 of the base portion 2 and the lower surface thereof faces the upper surface of the support portion 11.

Each linear guide 18 is composed of a rail 21 and two sliders 22 and 22, and one linear guide 18 is attached with a linear guide clamper 23.
The rails 21 and 21 of the linear guides 18 and 18 are fixed to the upper surface of the support portion 11 in a state of being separated from each other and extending in parallel in the transport direction. The two sliders 22 and 22 of each linear guide 18 are fixed to the lower surface of the substrate 12 near the respective ends in the longitudinal direction thereof. The linear guide clamper 23 is fixed to the lower surface of the substrate 12 between the two sliders 22 and 22 in one linear guide and at a position close to the one slider 22.

The linear guides 18 and 18 allow the conveyor support portion 3 to reciprocate in the transport direction with respect to the base portion 2, and move at an arbitrary position in the movement range by tilting the lever 24 of the linear guide clamper 23 to one side. It can be fixed impossible.
Four female screw holes 19 and 19 having a circular cross section are provided on the upper surface of the substrate 12. The four female screw holes 19, 19 are arranged in two rows in the transport direction and are arranged at the positions of the rectangular apex angles in a plan view.

The horizontal moving plate 13 is formed of a substantially rectangular thick plate. The horizontal moving plate 13 is stacked on the substrate 12, and is an oval horizontal guide whose cross-sectional shape is orthogonal to the transport direction (hereinafter referred to as "width direction") in the portion overlapping the four female screw holes 19 and 19. The holes 25, 25, 25, 25 penetrate. The width of the horizontal guide hole 25 (the dimension in the direction orthogonal to the longitudinal direction of the oval) is slightly larger than the diameter of the female screw hole 19.

Here, the "oval" means a shape in which two parallel sides of a rectangle are replaced with outwardly convex semicircles.
The horizontal moving plate 13 is integrated with the substrate 12 by a bolt 26 that penetrates the horizontal guide hole 25 and is screwed into the female screw hole 19. The horizontal moving plate 13 is fixed to the substrate 12 by tightening four bolts 26, 26, 26, 26. By loosening the four bolts 26, 26, 26, 26, the horizontal moving plate 13 has a width direction with respect to the substrate 12 by a distance obtained by subtracting the diameter of the female screw hole 19 from the longitudinal dimension of the horizontal guide hole 25. It is possible to move to.

The support plate 14 is formed of a rectangular thick plate. The end face of the support plate 14 is fixed to the upper surface of the horizontal moving plate 13 in the vicinity of the end edge extending in the transport direction so as to expand upward. The support plate 14 is provided with four sets of two female screw holes 20, 20 penetrating vertically side by side. The arrangement of the four sets of female screw holes 20, 20 is parallel to each other with an interval in the transport direction.
The dimensions of the support plate 14 in the transport direction are substantially the same as the dimensions of the horizontal moving plate 13 in the transport direction. The support plate 14 is integrated with the horizontal moving plate 13 by a plurality of reinforcing ribs.

The horizontal movement device 15 includes an adjust bolt block 31, a screw block 32, and an adjust bolt 33. The adjust bolt block 31 is fixed to the substrate 12. The screw block 32 is fixed to the horizontal moving plate 13 inward in the width direction from the adjust bolt block 31 with the axis of the screw hole directed toward the recess (recess) of the adjust bolt block 31. The head of the adjust bolt 33 is positioned outward in the width direction from the adjust bolt block 31, and the threaded portion thereof is screwed into the female screw of the screw block 32. In the horizontal moving device 15, when the adjusting bolt 33 is turned to the right with the bolts 26, 26, 26, 26 loosened, the screw block 32, that is, the horizontal moving plate 13 moves to the adjusting bolt block 31 side. When the adjust bolt 33 is turned counterclockwise, the horizontal moving plate 13 moves away from the adjust bolt block 31.

The conveyor holding plate 16 is made of a thick plate, and its shape is rectangular as a whole. The conveyor holding plate 16 partially overlaps the surface of the support plate 14 facing outward in the width direction, and extends further upward than the upper end of the support plate 14.
Four vertical guide holes 34, 34, 34, 34 penetrate the conveyor holding plate 16 below the conveyor holding plate 16. The vertical guide holes 34 have an oval shape whose cross-sectional shape is long in the vertical direction, and the vertical guide holes 34 are parallel to each other with an interval in the transport direction. The four vertical guide holes 34, 34, 34, 34 are provided at overlapping positions of any of the different female screw holes 20, 20, and the oval is larger than the distance between the two female screw holes 20, 20.

The conveyor holding plate 16 is provided with a swing bearing 35 and an inclined fixing portion 36 above the conveyor holding plate 16. The swing bearing 35 is located on one side of the conveyor holding plate 16 that expands in the transport direction in an upright state, and supports the swing shaft 37 extending in the width direction from the conveyor 4 so as to be swingable.
The inclined fixing portion 36 is formed by two fixing holes 38, 38 having an oval cross section and a bottom. Female screw holes 39 and 39 penetrate in the vicinity of both ends of the oval in the fixing hole 38 in the longitudinal direction, respectively. The two fixing holes 38, 38 pass through a straight line passing through the center of the female screw holes 39, 39 of one fixing hole 38 and the center of the female screw holes 39, 39 of the other fixing hole 38 in the front view (FIG. 1). They are lined up and down so that the straight lines form an obtuse angle. Regarding the positional relationship between the two fixing holes 38, 38 and the swing bearing 35, each fixing hole 38 has the center of the female screw holes 39, 39 and the shaft of the swing shaft 37 supported by the swing bearing 35. It becomes an isosceles triangle with the center, and the triangles for these two fixing holes 38, 38 have the same shape.

A swing stop bolt 45 is screwed into one of the female screw holes 39 in the fixing holes 38 and 38.
The conveyor holding plate 16 is integrated into the support plate 14 so as to be vertically movable with respect to the support plate 14 by bolts 40, 40 that penetrate the vertical guide holes 34 and are screwed into the female screw holes 20, 20. ing.

The vertical movement device 17 includes an adjust bolt block 41, a screw block 42, and an adjust bolt 43. The adjust bolt block 41 is a conveyor holding plate 16.
It is fixed to the outward facing surface in. The screw block 42 is arranged below the adjust bolt block 41 so that the extension of the axial center of the screw hole passes through the recess of the adjust bolt block 41 and is fixed to the outward facing surface of the support plate 14. Has been done. The head of the adjust bolt 43 is positioned above the adjust bolt block 41, and the threaded portion thereof is screwed into the female screw of the screw block 42.

The vertical moving device 17 raises and lowers the conveyor holding plate 16 by rotating the adjust bolt 43 after the bolts 40, 40, 40, and 40 are loosened.
The conveyor 4 includes a power unit 51, a driven unit 52, a conveyor belt 53, a conveyor body 54, and a detection unit 55.
The power unit 51 includes a drive pulley 61, a drive motor 62, and the like. The power unit 51 is located at one end of the conveyor 4 in the transport direction. The drive pulley 61 is located inside the endless band-shaped conveyor belt 53 and is for circulating the conveyor belt 53. The drive motor 62 rotates the drive pulley 61 via the two timing pulleys 68 and 69 and the timing belt 63. A servo motor is used as the drive motor 62.

The driven unit 52 is located at the other end of the conveyor 4 in the transport direction (the end opposite to the end where the power unit 51 is located). The driven portion 52 has a tail pulley 64. The tail pulley 64 folds the conveyor belt 53 inside the conveyor belt 53 and circulates the conveyor belt 53 with the drive pulley 61.
The conveyor belt 53 is formed in an endless band shape by a flexible material such as rubber. A plurality of substantially rectangular plate-shaped crosspieces 65 are provided on the outer peripheral surface of the conveyor belt 53 so that the end edges (end faces) in the longitudinal direction coincide with both ends in the width direction of the conveyor belt 53 and spread outward (standing). ing. The crosspieces 65 are arranged at substantially equal intervals in the circumferential direction. The height of the crosspiece 65 is determined according to the maximum outer diameter of the object to be transported by the transport device 1. The "outer peripheral surface" of the conveyor belt 53 is a surface facing outward on which the conveyed object is placed during transportation.

The conveyor body 54 has a pair of side plates 66, 66. The side plate 66 extends in a strip shape long in the transport direction, and its thickness is small compared to its length and width. The side plates 66 and 66 are arranged in parallel with their surfaces facing each other, and the drive pulley 61 and the tail pulley 64 are positioned between them to support the rotation axis of each pulley. The upper ends of the side plates 66 and 66 are higher than the outer peripheral surface of the conveyor belt 53 and lower than the upper ends of the crosspiece 65. The conveyor body 54 holds the drive motor 62 near the end on the drive pulley 61 side.

On the surface of one side plate 66, a swing shaft 37 projecting outward in the width direction is provided. The swing shaft 7 is supported by the swing bearing 35 of the conveyor holding plate 16, so that the conveyor 4 is swingably supported by the conveyor support portion 3.
The swing of the conveyor 4 with respect to the conveyor support portion 3 is stopped by inserting the swing stop bolt 45 into the female screw hole 39 and pressing the surface of the side plate 66 against the tip thereof, and the inclination of the conveyor 4 is fixed.

The detection unit 55 has a passage sensor that detects the presence or absence of a transport object on the moving conveyor belt 53. In the transport device 1, a transmissive fiber sensor is used as the passage sensor. The floodlight 56 and the light receiver 57 of the fiber sensor are both attached to the upper ends of one of the different side plates on the upstream side of the transport device 1.
Next, a state in which the transport device 1 transports the cylindrical roller W will be described.

FIG. 6 is a diagram showing the posture of the transport device 1 when transporting the cylindrical roller W, and FIG. 7 is a diagram showing the relationship between the conveyor belt 53 and the passage sensor and the cylindrical roller W. 7 (a) is an enlarged view of the vicinity of the detection unit 55 (receiver 57) in the front view and FIG. 7 (b) is the right side view.
When transporting the cylindrical roller W, the conveyor 4 of the transport device 1 is tilted so that either the transport source side or the transport destination side is higher. In the transport device 1 shown in FIG. 6, the transport destination side is higher than the transport source side. The conveyor 4 is tilted by loosening the swing stop bolts 45 and 45 and rotating the conveyor 4 around the swing shaft 37. After the conveyor 4 is properly tilted, the rocking stop bolts 45 and 45 are tightened to fix the conveyor 4 to the conveyor support portion 3. The fixing hole 38 of the inclined fixing portion 36 is oval, and female screw holes 39 are provided at both ends thereof. Therefore, the conveyor 4 changes the female screw hole 39 into which the swing stop bolt 45 is screwed, so that the top of the isosceles triangle having the base between the two female screw holes 39 and 39 and the swing shaft 37 as the apex. It can be tilted within a range of approximately twice the angle θ. Further, by screwing and fixing only one swing stop bolt 45 to any one of the female screw holes 39, the conveyor 4 can be tilted in a wider angle range.

The cylindrical roller W1 mounted on the conveyor belt 53 on the transport source side of the transport device 1 rolls toward the transport source side due to the inclination of the conveyor 4 (conveyor belt 53), hits the nearest rail 65, and stops. This cylindrical roller W1 and subsequently the next cylindrical roller W2 mounted on the conveyor belt 53 also hit the nearest crosspiece 65 after rolling toward the transport source side and stop. Similar to the cylindrical rollers W1 and W2, the cylindrical rollers mounted on the conveyor belt 53 following the cylindrical rollers W1 and W2 also come into contact with the nearest crosspiece 65 on the transport source side, so that the rotation is stopped. The cylindrical rollers W1 and W2 of the conveyor belt 53 are both locked to the rail 65 on the transport source side, and the cylindrical rollers W1 and W2 are transported in a state of being separated from each other.

The detection unit 55 determines whether or not the cylindrical roller W is mounted on the conveyor belt 53 based on the information from the passage sensor attached to the transport source side, and if it is determined that the cylindrical roller W is mounted, for example, a drive motor. 62 is activated and the conveyor belt 53 is moved by the interval between adjacent crosspieces 65 and 65.
In the transport device 1, the detection unit 55 and the drive motor 62 cooperate with each other, and the conveyor belt 53 is moved so that only one cylindrical roller W is placed between the adjacent crosspieces 65 and 65.

The transport device 1 includes a plurality of crosspieces 65 on which the conveyor belt 53 is inclined and provided at intervals, and is locked to the crosspiece 65 whose cylindrical roller W is always lower between the crosspieces 65 and 65. Will be done. As a result, the transport device 1 can transport the cylindrical roller W without touching (contacting) the two adjacent rollers W. The transport device 1 can transport two cylindrical rollers whose surfaces are extremely smoothly polished by super-finishing or the like, which are lined up in the transport direction, without being scratched by contact with each other.

The transport device 1 can transport objects having various outer diameters (with a circular cross section) so as not to get over the crosspiece 65 when rolling due to the inclination of the conveyor 4.
With reference to FIG. 7, the height of the crosspiece 65 of the conveyor belt 53 and the position (height) of the projector 56 and the receiver 57 of the detection unit 55 have the smallest outer diameter among the objects intended to be conveyed. Determined on the basis of things.

For example, when the object to be transported having the smallest outer diameter is a cylindrical roller Ws having an outer diameter Di, the height H of the crosspiece 65 is designed to be 5 to 10 mm lower than the outer diameter Di of the cylindrical roller Ws. The positions of the floodlight 56 and the light receiver 57 (the light projecting portion and the light receiving portion 58, respectively) are higher than the crosspiece 65 and the height from the surface of the conveyor belt 53 is lower than the outer diameter Di of the cylindrical roller Ws. The difference D2 between the height of the light emitting portion of the floodlight 56 and the light receiving portion 58 of the light receiving device 57 and the height of the crosspiece 65 is 3 to 5 mm. By designing the height of the cross-section 65 of the conveyor belt 53 and the height of the floodlight 56 and the receiver 57 in this way, all of the circular objects having various outer diameters to be conveyed are placed on the conveyor belt 53. The presence or absence of the presence can be detected.

In addition, Wl in FIG. 7 is a cylindrical roller which is a transport object having an outer diameter larger than that of the cylindrical roller Ws.
8 and 9 are diagrams showing an outline of the conveyor belts 53B and 53C of other forms.
The conveyor belt 53B shown in FIG. 8 includes a plurality of protrusions 71B, 71B, 71B between the adjacent crosspieces 65, 65 in addition to the plurality of crosspieces 65, 65, 65.

The projecting body 71B projects outward from the surface of the conveyor belt 53B and extends in a band shape from one end in the width direction to the other end. The height of the protrusion 71B is lower than that of the crosspiece 65. The distance between the adjacent protrusions 71B and 71B is determined in consideration of the diameter of the conveyed object having the largest circular cross section among the conveyed objects to be conveyed by the conveying device 1. That is, when the conveyed object Wl having such a maximum diameter is placed between the projecting bodies 71B and 71B, the height of the projecting body 71B is such that the bus of the peripheral surface thereof is in contact with the flat surface of the conveyor belt 53B. And the distance between the adjacent protrusions 71B and 71B is determined.

In the conveyor belt 53B, the moving objects Wl and Ws having a circular cross section are hindered by the projecting body 71B regardless of their sizes. That is, in the transport device provided with the conveyor belt 53B, the transport objects Wl and Ws stop near the position where they are initially placed and do not roll and move in either one of the transport directions. Therefore, if the conveyed objects Wl and Ws are placed at a predetermined position between the two crosspieces 65 and 65, the adjacent conveyed objects Wl and Ws can come into contact with each other even if the conveyor belt 53B (conveyor) is not tilted. However, it is possible to prevent the occurrence of scratches on the peripheral surface of the conveyed objects Wl and Ws. It is necessary to incline the conveyor belt 53B to operate the transport measures, and even if the transported objects Wl and Ws get over the projecting body 71B, the conveyor belt 53 is transported by the rail 65 as in the conveyor belt 53 of the transport device 1. The distance between objects Wl and Ws is maintained.

The same result as described above can be obtained even if the protrusion 71B has a structure in which rod-shaped protrusions having a circular, elliptical, square, or rectangular cross section are arranged at intervals in the width direction.
The conveyor belt 53C shown in FIG. 9 includes a plurality of projecting bodies 71C having different heights between adjacent crosspieces 65 and 65.
Each of the projecting bodies 71C projects outward from the surface of the conveyor belt 53C and extends in a band shape from one end in the width direction to the other end, and the height thereof is lower than that of the crosspiece 65. Among the adjacent crosspieces 65 (65a) and 65 (65b), the height of the projecting body 71C closest to one of the crosspieces 65a is the highest, and the height of the projecting body 71C becomes lower as the distance from the crosspiece 65a increases. The height of the projecting body 71C is the lowest near the substantially center of the adjacent crosspieces 65a and 65b. A plurality of the lowest projecting bodies 72C are lined up from the vicinity of the center to the other crosspiece 65b without changing the height. The heights of the low protrusions 72C and 72C of the same height and the distance between the adjacent ones are the heights of the above-mentioned conveyor belt 53B in the protrusions 71B and the adjacent mutual distances in consideration of the maximum diameter of the maximum planned transport. It is determined by the same criteria as the interval.

The height of the nearest projecting body 71C on the one side of the crosspiece 65a and the distance from the crosspiece 65a, as well as the adjacent spacing between the protruding bodies 71C, ... It is determined in consideration of the diameter of the transported object. For example, the distance between the rail 65a and the nearest projecting body 71C and the height of the protruding body 71C are such that when the transported objects Wl and Wm are supported by the rails 65a and the projecting body 71C, the center of gravity G of the transported objects Wl and Wm is set. It is designed to be on the other side (far away) of the crosspiece 65b from the lower protrusion 71C (FIGS. 9 (a) and 9 (b)). Here, the transported object Wm is a general term for the transported object Wl having the maximum diameter among the planned transported objects and the transported object Ws having the maximum diameter thereof being the smallest among the planned transported objects. The "center of gravity G of the transported objects Wl and Wm" is the same as the center of gravity in the tapered rollers, but may be read as the axis in the cylindrical rollers.

This design principle may not be applicable to all projecting bodies 71C, ..., 71C with a small diameter conveyed object Ws. In that case, at least (the closest to the crosspiece 65a) the tallest projecting body 71C or the projecting body 71C close to this (there may be more than one) is designed according to the above design principle. This design principle is intended to prevent a part of the conveyed object Ws from protruding outward (on the right side in FIG. 9C) from the crosspiece 65a on the side closer to the projecting body 71C.

By appropriately determining the heights of the protrusions 71C and 71C and the mutual spacing as described above, even if the conveyor belt 53C is not tilted in the transport device (= even in the horizontal state), the transported object is transported. Wl, Wm, Ws smoothly move from the crosspiece 65a on the side where the projecting bodies 71C, ..., 71C are provided to the other crosspiece 65b. As a result, the two adjacent objects Wl, Wm, and Ws on the conveyor belt 53C are always conveyed apart from each other, and the adjacent objects Wl, Wm, and Ws do not come into contact with each other. It can be prevented from occurring.

The protrusions 71C and 72C may have a structure in which rod-shaped protrusions having a circular, elliptical, square, or rectangular cross section are arranged at intervals in the width direction.
Since the conveyor belt 53C basically moves the conveyed objects Wl, Wm, and Ws to one side in the conveying direction, a projecting body 72C having the same height provided on the other crosspiece 65b side from the substantially center is provided. It may not be.

Further, although the "conveyor moving direction" is described in FIG. 9, even if the conveyor belt 53C is moved in the opposite direction, the same contact prevention effect between the conveyed objects Wl, Wm, and Ws can be obtained.
The transport device 1 is suitable for transporting easily rotatable objects such as cylindrical rollers, tapered rollers, and columnar bodies having an elliptical cross section so that two adjacent objects do not come into contact with each other.

In the above-described embodiment, the structure, shape, dimensions, number, material, and the like of each configuration or the whole of the transfer device 1 and the transfer device 1 can be appropriately changed according to the gist of the present invention.

INDUSTRIAL APPLICABILITY The present invention can be used for transporting a circular object whose peripheral surface is mirror-finished and which needs to avoid the occurrence of scratches due to contact with each other.

1 Conveyor device 3 Conveyor support 4 Conveyor 37 Swing shaft 53, 53B, 53C Conveyor belt (belt)
65 Crosspieces W, W1, W2, Ws Cylindrical rollers (things with a circular cross section)

Claims (2)

A transport device for transporting objects with a circular cross section.
A conveyor with a circulating endless band-shaped conveyor belt,
It has a conveyor support portion that supports the conveyor, and has
A plurality of plate-shaped crosspieces standing outward are arranged on the outer peripheral surface of the conveyor belt at intervals in the circumferential direction.
Between the adjacent crosspieces, a plurality of projecting bodies that project outward from the outer peripheral surface of the conveyor belt and extend in a strip shape in the width direction of the conveyor belt and have a height lower than that of the crosspieces are provided .
The height of the plurality of protrusions closest to one of the adjacent crosspieces is the highest, and the height is lower as the distance from the one of the adjacent crosspieces to approximately the center of the adjacent crosspieces.
A transport device characterized by that. A transport device for transporting objects with a circular cross section.
A conveyor with a circulating endless band-shaped conveyor belt,
It has a conveyor support portion that supports the conveyor, and has
A plurality of plate-shaped crosspieces standing outward are arranged on the outer peripheral surface of the conveyor belt at intervals in the circumferential direction.
Between the adjacent crosspieces, a plurality of projecting bodies that project outward from the outer peripheral surface of the conveyor belt and extend in a strip shape in the width direction of the conveyor belt and have a height lower than that of the crosspieces are provided.
The height of the plurality of protrusions closest to one of the adjacent crosspieces is the highest, and the height thereof becomes lower as the height is farther from the one of the adjacent crosspieces, and the protrusion at the substantially center of the adjacent crosspieces. The lowest in the body, the protrusions from the substantially central protrusion to the other of the adjacent crosspieces are at the same height.
A transport device characterized by that .

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