JP2017100861A - Transport device and transport roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transport device and a transport roller, which are suited for removing an attachment such as a paint drop formed on the lower surface of a transported article during the transport of the transported article.SOLUTION: A transport device 1 has two roller conveyor rows of a first roller conveyor row L1 and a second roller conveyor row L2 as a plurality of roller conveyor rows, and the transport rollers of the first roller conveyor row L1 and the second roller conveyor row L2 are driven to have a speed difference on the individual lines. Moreover, at least one transport roller 10 used is formed with a contact part and a non-contact part for an article to be transported, alternately in the circumferential direction. As a result, the substance to be transported is transported while rotating, so that the transport roller can peel off the attachment or the like formed on the transportation side of the transported article.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a transport device and a transport roller, and more particularly to a transport device and a transport roller suitable for removing deposits on the lower surface of a transported object during transport of the transported object.

  As a transport device, a plurality of cylindrical transport rollers are continuously arranged in a transport direction on a frame serving as a support member, and each transport roller is driven to rotate so that an object to be transported (workpiece) is aligned in the rotational direction. A roller conveyor that moves in a row is known. This roller conveyor can move the object to be conveyed in a straight line or by changing the direction by changing the arrangement and shape of the conveying rollers. As a linear roller conveyor or a curved roller conveyor, It is used as a transport device in a production line.

  For example, as described in Patent Document 1, a roller conveyor is also used in a drum can production line. When manufacturing a drum can, in the case of a closed drum, a single steel plate is formed into a cylindrical shape, and then attached to the top and bottom of the shell plate joined by welding by attaching the top plate and the base plate together with the drum plate, and the drum can body Is forming. A so-called large plug and small plug, which are entrances and exits for the contents stored in the drum can, are attached to the top plate. The formed drum can is painted to be baked on the outer surface of the drum and heated in a drying furnace. The can container manufactured in this way is inspected for hermeticity using helium gas or the like, whether there is a problem in the sealing performance of the above-described wound portion or stopper portion.

JP-A-6-7870

  Drum cans that have been heated after painting may drip on the winding part of the base plate and form a thick part of the paint film (so-called paint dripping), and adhere to the rollers of the roller conveyor during transport of the drums. Or may come off. In addition, since the paint adhering to the transport roller may be peeled off when the drum can is transported, fine dust of the paint is generated, which causes a problem of being mixed in the drum can in other processes.

  The present invention has been made in view of these circumstances, and includes a transport device and a transport roller suitable for removing deposits such as paint dripping formed on the lower surface of the transported object during transport of the transported object. Its purpose is to provide.

  In order to solve the above-mentioned problem, a first technical means of the present invention is a transport device in which a plurality of roller conveyor rows in which a plurality of transport rollers are arranged in the transport direction are arranged in parallel, and the at least two adjacent rows of the above-mentioned The roller conveyor train is driven so as to have a speed difference, and at least one transport roller of the two roller conveyor trains alternately forms contact portions and non-contact portions with respect to the transported object in the circumferential direction. It is characterized by being.

  The second technical means is the first technical means, wherein the transport rollers of one of the roller conveyor rows and the other roller conveyor row of at least two rows of the roller conveyor rows driven so as to have a speed difference. The transport roller is rotationally driven in opposite directions to each other.

  According to a third technical means, in the first or second technical means, the conveying roller in which contact portions and non-contact portions with respect to the object to be conveyed are alternately formed in the circumferential direction has a plurality of plate-like members on the outer peripheral side. It is what is arrange | positioned radially so that it may be located on a concentric cylindrical surface.

  According to a fourth technical means, in the first or second technical means, the conveying roller in which contact portions and non-contact portions with respect to the object to be conveyed are alternately formed in a circumferential direction is formed on a surface of a cylindrical member in an axial direction. It is characterized in that a groove along the line is provided.

  According to a fifth technical means, in the first or second technical means, the conveying roller in which contact portions and non-contact portions with respect to the object to be conveyed are alternately formed in a circumferential direction has a spiral shape on a surface of a cylindrical member. The projection or groove is provided.

  A sixth technical means is the technical means according to any one of the first to fifth technical means, wherein the object to be conveyed in a direction orthogonal to the conveying direction on both side surfaces in the conveying direction of the plurality of rows of the roller conveyor rows. A guide member for restricting movement is provided.

  In a seventh technical means, the length in the axial direction of the transport rollers of at least two rows of the roller conveyor rows driven so as to have a speed difference in any one of the first to sixth technical means, It differs depending on the two rows of the roller conveyor rows.

  According to an eighth technical means, in any one of the first to seventh technical means, the shape or material of the surface of the conveying roller of at least two rows of the roller conveyor row driven so as to have a speed difference is: It differs depending on the two rows of the roller conveyor rows.

  According to a ninth technical means, in any one of the first to eighth technical means, the roller conveyor row includes a brush roller disposed between the plurality of transport rollers. is there.

  According to a tenth technical means, in any one of the first to ninth technical means, a brush member is disposed between at least two roller conveyor rows driven with a speed difference. It is characterized by.

  An eleventh technical means according to the tenth technical means is characterized in that the brush member is a rotating brush that rotates in a direction perpendicular to the conveying direction of the roller conveyor.

  A twelfth technical means includes any one of the first to eleventh technical means, wherein the roller conveyor row has at least three rows, and the rotation direction of the transport roller of the roller conveyor row in the center is changed to the other one. A guide member is provided that regulates the movement of the object to be conveyed in the direction perpendicular to the conveyance direction at the central portion in the axial direction of the roller conveyor row while being different from the rotation direction of the conveyance rollers of the roller conveyor row. It is characterized by.

  A thirteenth technical means includes any one of the first to eleventh technical means, wherein the roller conveyor row has at least three rows, and the rotation direction of the transport roller of the roller conveyor row at one end is changed to the other one. It is characterized in that it is different from the rotation direction of the conveying rollers in the roller conveyor row.

  A fourteenth technical means according to any one of the first to thirteenth technical means, is characterized in that the object to be conveyed is a drum can.

  The fifteenth technical means is a transport roller used for any one of the first to fourteenth technical means.

  According to the present invention, since at least two adjacent roller conveyor rows are driven so as to have a speed difference, the object to be conveyed is conveyed while rotating on the roller conveyor. For this reason, the conveyed object moves while sliding with respect to the respective conveying rollers of at least two roller conveyor rows. And since at least one conveyance roller of a two-row roller conveyor row | line | column forms the contact part and non-contact part with respect to a to-be-conveyed object alternately, the conveyance surface side of the roller conveyor of a to-be-conveyed object with a conveyance roller It becomes possible to forcibly peel off the deposits.

It is the figure which looked at the example of the conveyance apparatus which concerns on one Embodiment of this invention from the upper side. It is the figure which looked at the conveying apparatus shown in FIG. 1 from the side. It is a figure for demonstrating the paint dripping produced in a drum can. It is a figure which shows an example of the conveyance roller used for the conveying apparatus of this invention. It is a figure which shows the other example of the conveyance roller used for the conveying apparatus of this invention. It is a figure which shows the further another example of the conveyance roller used for the conveying apparatus of this invention. It is the figure which looked at the state which attached the guide member to the conveying apparatus shown in FIG. 1 along the conveyance direction. It is the figure which looked at the example of the conveying apparatus which concerns on other embodiment of this invention from the upper side. It is the figure which looked at the example of the conveyance apparatus which concerns on other embodiment of this invention from the upper side. It is the figure which looked at the example of the conveyance apparatus which concerns on other embodiment of this invention from the upper side. It is the figure which looked at the example of the conveyance apparatus which concerns on other embodiment of this invention from the upper side. It is the figure which looked at the example of the conveyance apparatus which concerns on other embodiment of this invention from the upper side. It is the figure which looked at the example of the conveyance apparatus which concerns on other embodiment of this invention from the upper side. It is the figure which looked at the example of the conveying apparatus which concerns on further another embodiment of this invention along the conveyance direction.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments according to a conveyance device and a conveyance roller of the invention will be described with reference to the drawings. In the following description, the configurations denoted by the same reference numerals in different drawings are the same, and the description thereof may be omitted.

(First embodiment)
FIG. 1 is a view of an example of a transport apparatus according to an embodiment of the present invention as viewed from above, and FIG. 2 is a view of the transport apparatus shown in FIG. 1 as viewed from the side. Hereinafter, in this embodiment, an example in which a drum can is used as an object to be conveyed will be described.

  The conveying device (roller conveyor device) 1 includes three first frames 21 arranged in parallel with a conveying path B provided with a first frame 21 and a second frame 22 that serve as support members arranged in parallel. The conveyance path A is provided with the frame 22 and the third frame 23. The conveyance path B is formed with a roller conveyor row L0 provided with a plurality of conveyance rollers 100 pivotally supported by the first frame 21 and the second frame 22. In the conveyance path A, the first frame 21 and the third frame are formed. 23, a first roller conveyor row L1 provided with a plurality of conveying rollers 10 pivotally supported by the second frame 23, and a second roller conveyor provided with a plurality of conveying rollers 10 pivotally supported by the second frame 22 and the third frame 23. A row L2 is formed. The first frame 21, the second frame 22, and the third frame 23 are installed on a support base (not shown).

  In the conveyance path B in which the roller conveyor row L0 is formed, the conveyance roller 100 is rotationally driven by a driving mechanism (not shown) in a direction to move the object to be conveyed, for example, from the left side to the right side of the drawing. Further, in the conveyance path A in which a plurality of roller conveyors of the first roller conveyor row L1 and the second roller conveyor row L2 are formed, the object to be conveyed is moved by a driving mechanism (not shown) from, for example, the left direction on the paper surface as in the conveyance path B. The first roller conveyor row L1 and the second roller conveyor are moved in the right direction, but the rotational speeds of the transport rollers 10 of the first roller conveyor row L1 and the transport rollers 10 of the second roller conveyor row L2 are different. The row L2 is driven to have a speed difference.

  Thus, the object to be conveyed conveyed from the conveyance path B to the conveyance path A can be moved while being rotated by the two rows of conveyance rollers 10 having different rotation speeds. Further, by making the rotation directions of the transport roller 10 of the first roller conveyor row L1 and the transport roller 10 of the second roller conveyor row L2 reverse, it is possible to give a greater rotational force to the conveyed object. is there.

  For example, as shown in FIG. 1, when the rotation direction of the transport roller 100 when transporting the drum can 30 from the left side to the right side is the normal rotation direction, the transport roller 10 of the second roller conveyor row L2 is moved in the positive rotation direction (tangential line). Drive in the X direction) so that the conveyance speed is 30 m / s (equal to the speed in the tangential X direction of the conveyance surface of the conveyance roller 10), and the conveyance roller 10 of the first roller conveyor row L1 is rotated in the reverse rotation direction (tangential Y In the case where the drum 30 is driven at a conveyance speed of 15 m / s in the direction), depending on its weight and the coefficient of friction with the roller, the drum can 30 is rotated clockwise when the conveyance roller 10 of the present invention described later is used. While rotating, it can be transported in the X direction at a speed of approximately 12.5 m / s.

  Accordingly, the drum can 30 moves while sliding with respect to the transport roller 10 in the first roller conveyor row L1 and the second roller conveyor row L2. The magnitude of this slip is 27.5 (= 15 + 12.5) m / s in the first roller conveyor row L1, and 17.5 (= 30-12.5) m / s in the second roller conveyor row L2. Therefore, the first roller conveyor row L1 in which the transport roller 10 is rotated in the opposite direction to the transport direction is the second roller conveyor row L2 in which the transport roller 10 is rotated in the same direction as the transport direction. Larger than

  An object of the present invention is to remove deposits such as paint dripping formed on the lower surface of the conveyed object by driving the roller conveyors adjacent to each other so as to have a speed difference. For this reason, although the contact part and non-contact part with respect to a to-be-conveyed object are alternately formed in the circumferential direction as a conveyance roller, the coating material dripping which arises in the drum can as a to-be-conveyed object is demonstrated first.

  FIG. 3 is a diagram for explaining paint dripping that occurs in the drum. When the drum 30 is a closed drum, a steel plate is formed into a cylindrical shape and a top plate 32 having a stopper and a base plate 33 are wound together with the shell plate 31 on a shell plate 31 provided with an annular zone (bead) 34 for reinforcement. It is made by tightening. Then, the outer surface of the drum can 30 is coated and heated and dried in a drying furnace. In the drying process, since the drum can 30 is conveyed with the top plate 32 facing upward, the paint hangs down, This may dry, and the paint dripping 35 may occur in the winding portion of the base plate 33 which is the lowermost part of the drum 30.

  The conveyance roller 10 of this embodiment has a function for efficiently removing the paint dripping 35 formed at the lowermost part of the drum can 30. FIG. 4 shows the conveyance roller used in the conveyance device of the present invention. An example is shown. 4A is an overall perspective view of the transport roller 10, FIG. 4B is a view of the transport roller 10 as viewed from above, and FIG. 4C is C1-C1 in FIG. 4B. It is sectional drawing of a cross section. The conveyance roller 10 shown in FIG. 4 has a pair of cylindrical bearing cases 12 that are rotatably supported by a support shaft 11 via a bearing (not shown), and between the pair of bearing cases 12, The plurality of plate-like members 13 are arranged radially so that the outer peripheral ends thereof are located on the concentric cylindrical surface. Iron is used as the material of the plate-like member 13, but other metal materials such as stainless steel may be used. Further, if the material is harder than the paint sag, for example, a synthetic resin such as MC nylon is used. There may be. For example, in the first roller conveyor row L1, the support shaft 11 is fixed to shaft holes provided in the first frame 21 and the third frame 23 of the transport device 1, and the transport roller 10 is connected to the first frame 21 and the first frame 21. It is pivotally supported with respect to the three frames 23.

  Further, sprockets 14 and 15 are integrally formed in one bearing case. As shown in FIG. 1, chains 71 and 72 are alternately provided on sprockets 14 and 15 between transport rollers 10 adjacent to each other in the transport direction so that the transport rollers 10 rotate in the same transport direction in the same roller conveyor row. It has become. The sprocket 14 or 15 of the transport roller 10 located at the transport direction end of the same roller conveyor row is connected to a drive source (not shown) via a chain, and is driven to rotate by the drive source. . As the drive source, for example, an inverter-driven motor is used, and the conveyance roller 10 can be rotated at a predetermined speed. A drive source (not shown), the chains 71 and 72, and the sprockets 14 and 15 constitute a drive mechanism of the transport device of the present invention.

  As shown in FIG. 4C, since the outer peripheral ends of the plurality of plate-like members 13 of the conveying roller 10 are located on the concentric cylindrical surface, the outer circumference of the plate-like member 13 is to be conveyed. The end portion is a contact portion to the conveyed object, and the gap between the outer peripheral end portions of the plate-like member 13 is a non-contact portion to the conveyed object. Contact portions and non-contact portions of the transport roller 10 with respect to the object to be transported are alternately formed in the circumferential direction. The drum can 30 is conveyed while the outer peripheral end of the plate-like member 13 that is the contact portion of the roller 10 forcibly strips the paint dripping formed on the lower surface of the drum 30.

  The paint dripping that has been peeled off falls below the conveyance path A of the conveyance apparatus 1, but if the dropped paint dripping is collected below the conveyance path B, the paint dripping scatters in the factory. Things will disappear. The present invention is directed to the configuration of the conveying device 1 at the position of the conveying path B, and the number and arrangement interval of the conveying rollers 10 can be appropriately determined according to the object to be conveyed.

(Second Embodiment)
FIG. 5 is a diagram illustrating another example of the conveyance roller used in the conveyance device of the present invention. 5A is an overall perspective view of the transport roller 10 ′, FIG. 5B is a view of the transport roller 10 ′ as viewed from above, and FIG. 5C is C2 in FIG. 5B. It is sectional drawing of a -C2 cross section. In the present embodiment, the conveyance roller 10 ′ has a pair of cylindrical bearing cases 12 that are rotatably supported with respect to the support shaft 11 via a bearing (not shown), as in the first embodiment. However, a cylindrical body portion 16 is provided between the pair of bearing cases 12, and a plurality of axial grooves 17 are provided on the outer periphery of the body portion 16. In the conveyance roller 10 ′ of the present embodiment, a portion where the groove 17 is not provided is a contact portion with respect to the object to be conveyed, and a portion where the groove 17 is provided is a non-contact portion with respect to the object to be conveyed. The configuration of the support shaft 11 and the sprockets 14 and 15 of the transport roller 10 ′ is the same as that of the transport roller 10 in the first embodiment.

  Even when the transport roller 10 ′ of the present embodiment is used as the transport roller of the transport device 1, the effect thereof is the same as that of the transport roller 10 in the first embodiment, and the lower surface of the drum can 30 that is a transported object. Moves while sliding with respect to the conveying roller 10 ′, so that the body portion 16 not provided with the groove 17 which is a contact portion of the conveying roller 10 ′ forcibly strips the paint dripping formed on the lower surface of the drum can 30. However, the drum 30 is conveyed. In addition, as a material of the trunk | drum 16, metal materials and resin, such as iron and stainless steel, can be used similarly to the plate-shaped member 13 in 1st Embodiment.

(Third embodiment)
FIG. 6 is a diagram illustrating another example of the conveyance roller used in the conveyance device of the present invention. In the present embodiment, the transport roller 10 '' has a pair of cylindrical bearing cases 12 that are rotatably supported by a support shaft 11 via a bearing (not shown), as in the first embodiment. However, a cylindrical body 18 is provided between the pair of bearing cases 12, and a plurality of spiral protrusions 19 are provided on the outer periphery of the body 18. In the transport roller 10 '' of the present embodiment, the portion provided with the spiral protrusion 19 serves as a contact portion for the object to be transported, and the portion not provided with the spiral protrusion 19 serves as a non-contact portion for the object to be transported. The configurations of the support shaft 11 and the sprockets 14 and 15 of the transport roller 10 '' are the same as those of the transport roller 10 in the first embodiment.

  Even when the transport roller 10 '' of the present embodiment is used as the transport roller of the transport device 1, the effect is the same as that of the transport roller 10 in the first embodiment. As the lower surface moves while sliding with respect to the conveying roller 10 ″, the spiral protrusion 19 which is the contact portion of the conveying roller 10 ″ forcibly strips the paint dripping formed on the lower surface of the drum can 30. The drum can 30 is transported. Although not shown, a plurality of spiral grooves may be provided in the body portion 16 instead of the spiral protrusion 19.

  As described above, the transport roller 10 of the first embodiment, the transport roller 10 'of the second embodiment, and the transport roller 10' 'of the third embodiment each have a bearing case 12 having a bearing. However, it is only necessary that the transport rollers 10, 10 ′, 10 ″ are supported rotatably with respect to the frame, and a bearing is provided on the frame side so that the support shaft 11 is rotatably supported. May be.

(Fourth embodiment)
FIG. 7 is a diagram illustrating a state in which a guide member is attached to the conveyance device illustrated in FIG. 1, and is a diagram of the conveyance device viewed from the front on the conveyance direction side. In this embodiment, the guide member 40 which regulates the movement of the to-be-conveyed object to the direction orthogonal to a conveyance direction is provided in the both sides of the conveyance direction of a several row roller conveyor. The guide member 40 is provided between the conveying rollers 10 of the first frame 21 and the second frame 22 and is composed of a roller member having an inclined shaft. For this reason, when the conveyed object is conveyed while rotating, it can be prevented from falling from the end. Further, as the guide member 40, a doctor knife or a guard rail member may be provided instead of the roller member.

(Fifth embodiment)
FIG. 8 is a view of an example of a transport device according to another embodiment of the present invention as viewed from the upper side. The transport apparatus 1 of the present embodiment includes a first roller conveyor row L1 provided with a plurality of transport rollers 10 that are pivotally supported by a first frame 21 and a third frame 23, a second frame 22, and a third frame 23. The second roller conveyor row L2 provided with a plurality of conveying rollers 10 that are pivotally supported by the same is formed in the same manner as in the first embodiment. However, it differs from the first embodiment in that a part of the plurality of transport rollers 10 is changed to the brush roller 50. The brush roller 50 is, for example, a wire brush made of a metal such as iron, stainless steel, or brass, or a synthetic resin, and is driven to rotate in the same manner as the transport roller 10. For this reason, since the brush surface of the brush roller 50 comes into contact with the lower surface of the drum can 30 that is the object to be conveyed at a relative speed, the paint dripping peeled off by the conveying roller 10 and adhering to the drum can 30 is caused by the brush roller 50. And can be dropped below the transport device 1.

(Sixth embodiment)
FIG. 9 is a view of an example of a transport device according to still another embodiment of the present invention as viewed from the upper side. In the present embodiment, the transport device 1 includes four parallel frames, and a first roller conveyor row L1 provided with a plurality of transport rollers 10 that are pivotally supported by a first frame 21 and a third frame 23. And a first roller conveyor row L1 provided with a plurality of transport rollers 10 pivotally supported by the second frame 22 and the fourth frame 24. Further, a plurality of fifth frames 25 orthogonal to the conveying direction are provided between the third frame 23 and the fourth frame 24, and a rotating brush 51 is pivotally supported between the adjacent fifth frames 25. .

  Similar to the brush roller of the fifth embodiment, the rotary brush 51 is composed of a wire brush made of metal, for example, and is rotatably provided. However, the rotary brush 51 may not be rotated by a drive source. Also in the present embodiment, since the drum can 30 is conveyed while being rotated, the brush surface of the rotary brush 51 moves relative to the lower surface of the drum can, which is an object to be conveyed. The adhering paint dripping is removed by the rotating brush 51 and can be dropped below the conveying device 1. In the present embodiment, a fixed brush may be disposed between the third frame 23 and the fourth frame 24 instead of the rotating brush 51.

(Seventh embodiment)
FIG. 10 is a view of an example of a transport device according to still another embodiment of the present invention as viewed from the upper side. In the first embodiment, the conveying rollers 10 of both the first roller conveyor row L1 and the second roller conveyor row L2 are arranged in the circumferential direction with contact portions and non-contact portions with respect to the object to be conveyed as shown in FIG. Although alternately formed ones are used, in this embodiment, the conveyance roller 10 of one first roller conveyor row L1 has a contact portion and a non-contact portion with respect to the object to be conveyed as shown in FIG. 4 in the circumferential direction. However, for example, a cylindrical roller made of metal is used as the transport roller 60 of the other second roller conveyor row L2.

  Also in the present embodiment, the object to be conveyed can be moved in the conveying direction while rotating, and the paint dripping formed on the lower surface of the drum can 30 is forced by the conveying roller 10 of the first roller conveyor row L1. It can be peeled off. In this embodiment, instead of the cylindrical roller made of metal as the transport roller 60, the material of the roller may be changed, and for example, a cylindrical roller made of hard rubber may be used.

(Eighth embodiment)
FIG. 11 is a view of an example of a transport apparatus according to still another embodiment of the present invention as viewed from the upper side. In the present embodiment, as a plurality of roller conveyors, three rows of a first roller conveyor row L1, a second roller conveyor row L2, and a third roller conveyor row L3 are provided. A third frame 23 and a fourth frame 24 are provided between the first frame 21 and the second frame 22 in order to support the transport rollers 10 of each roller conveyor row. And the conveyance roller 10 is rotated so that the conveyance direction of the 1st roller conveyor row | line | column L1 and the 2nd roller conveyor row | line | column L2 may become the direction from the left side to the right side of the paper, and the conveyance direction of the central third roller conveyor row L3 is The direction is opposite to the conveying direction of the first roller conveyor row L1 and the second roller conveyor row L2.

  Thereby, in this embodiment, when the drum can 30 moves across the first roller conveyor row L1 and the third roller conveyor row L3, it is conveyed while rotating counterclockwise, and the second roller conveyor row L2 When the drum can 30 ′ moves across the third roller conveyor row L3, it is conveyed while rotating clockwise. Thereby, it becomes possible to convey while rotating two drum cans at the same time with three roller conveyor rows. In the present embodiment, it is desirable to provide a guide member for restricting the movement of the drum can in the direction perpendicular to the transport direction at the central portion in the axial direction of the third roller conveyor row L3. It is possible to avoid 'collisions'.

(Ninth embodiment)
FIG. 12 is a view of an example of a transport device according to still another embodiment of the present invention as viewed from the upper side. In this embodiment, the point having three roller conveyor rows is the same as that of the eighth embodiment, but the length of each transport roller 10 in the axial direction is shortened and the second roller conveyor row at one end portion. The conveyance roller 10 is rotated so that the conveyance direction of L2 and the third roller conveyor row L3 in the center is changed from the left side to the right side of the drawing, and the conveyance direction of the first roller conveyor row L1 at the other end is changed to the second direction. The direction is opposite to the conveying direction of the roller conveyor row L2 and the third roller conveyor row L3. Also in this embodiment, it is possible to move the drum can 30 that is a transported object in the transport direction while rotating it, and the paint dripping formed on the lower surface of the drum can 30 can be forcibly peeled off.

(Tenth embodiment)
FIG. 13 is a view of an example of a transport device according to still another embodiment of the present invention as viewed from the upper side. In this embodiment, the point which has the 1st roller conveyor row | line | column L1 and the 2nd roller conveyor row | line | column L2 is the same as that of 1st Embodiment, However, The axial direction of the conveyance roller 10 of the 2nd roller conveyor row | line | column L2 The length is longer than the axial length of the transport roller 10 of the first roller conveyor row L1. In addition, this embodiment is corresponded to what comprised the 2nd roller conveyor row | line | column L2 and the 3rd roller conveyor row | line | column L3 in 9th Embodiment shown in FIG. 12 by one roller conveyor row | line | column. In other words, the ninth embodiment corresponds to the second roller conveyor row L2 having the conveying rollers 10 that are long in the axial direction of the present embodiment divided into two. Also in this embodiment, it is possible to move the drum can 30 that is a transported object in the transport direction while rotating it, and the paint dripping formed on the lower surface of the drum can 30 can be forcibly peeled off.

(Eleventh embodiment)
FIG. 14 is a view of an example of a transport apparatus according to still another embodiment of the present invention as viewed in the transport direction. In this embodiment, the point having two roller conveyor rows is the same as that of the first embodiment, but the conveyance rollers 10 ′ ″ provided in the respective roller conveyor rows with respect to the object 80 to be conveyed. The shape of the contact surface is not a straight line but a part of an arc. For this reason, the transported object 80 is a transport device suitable for the transported object 80 having a spherical bottom surface instead of a flat bottom like a drum can. According to the present embodiment, it is possible to peel off the adhered matter adhering to the spherical bottom of the conveyed object 80.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to these illustrations, is shown by the claim, and all the changes are within the meaning and range equivalent to a claim. included.

DESCRIPTION OF SYMBOLS 1 ... Conveyance apparatus (roller conveyor apparatus) 10, 10 ', 10'',10''', 100 ... Conveyance roller, 11 ... Support shaft, 12 ... Bearing case, 13 ... Plate member, 14, 15 ... Sprocket 16, 18 ... trunk, 17 ... groove, 19 ... projection, 21 ... first frame, 22 ... second frame, 23 ... third frame, 24 ... fourth frame, 25 ... fifth frame, 30, 30 ' ... drum cans, 31 ... body plate, 32 ... top plate, 33 ... ground plate, 34 ... ring zone (bead), 40 ... guide member, 50 ... brush roller, 51 ... rotating brush, 60 ... transport roller, 71, 72 ... chain .

Claims (15)

  A conveying device in which a plurality of roller conveyor rows in which a plurality of conveying rollers are arranged in the conveying direction are arranged in parallel, wherein at least two adjacent roller conveyor rows are driven to have a speed difference, and the two rows At least one conveyance roller of the said roller conveyor row | line | column is what formed the contact part and non-contact part with respect to a to-be-conveyed object alternately in the circumferential direction, The conveying apparatus characterized by the above-mentioned.   The transport rollers of one of the roller conveyor rows and the transport rollers of the other roller conveyor row of at least two rows of the roller conveyor rows driven to have a speed difference are rotationally driven in opposite directions to each other. The conveying apparatus according to claim 1.   The conveying roller in which contact portions and non-contact portions with respect to the object to be conveyed are alternately formed in the circumferential direction is configured such that a plurality of plate-like members are radially arranged so that the outer peripheral side is located on a concentric cylindrical surface. The conveying apparatus according to claim 1 or 2, wherein   The conveyance roller in which contact portions and non-contact portions with respect to the object to be conveyed are alternately formed in a circumferential direction is provided with a groove along the axial direction on a surface of a cylindrical member. The transfer device according to 1 or 2   The said conveyance roller which formed the contact part with respect to the said to-be-conveyed object and the non-contact part alternately in the circumferential direction is what provided the helical protrusion or groove | channel on the surface of the cylindrical member. The transport apparatus according to 1 or 2.   6. A guide member for restricting movement of the object to be conveyed in a direction orthogonal to the conveying direction is provided on both side surfaces in the conveying direction of the plurality of rows of roller conveyor rows. Or the transfer device according to claim 1.   The length in the axial direction of the transport rollers of at least two rows of the roller conveyor rows driven so as to have a speed difference differs depending on the two rows of the roller conveyor rows. The conveyance apparatus of any one.   The shape or material of the surface of the conveyance roller of at least two rows of the roller conveyor rows driven so as to have a speed difference differs depending on the two rows of the roller conveyor rows. The conveyance apparatus of any one.   The conveying apparatus according to any one of claims 1 to 8, wherein the roller conveyor row includes brush rollers arranged between the plurality of conveying rollers.   The conveying apparatus according to any one of claims 1 to 9, wherein a brush member is disposed between at least two roller conveyor rows driven to have a speed difference.   The conveying device according to claim 10, wherein the brush member is a rotating brush that rotates in a direction orthogonal to the conveying direction of the roller conveyor row.   The roller conveyor row has at least three rows, the rotation direction of the transport rollers of the central roller conveyor row is different from the rotation direction of the transport rollers of the other roller conveyor rows, and the central roller conveyor row 12. The transport device according to claim 1, wherein a guide member that restricts movement of the transported object in a direction perpendicular to the transport direction is provided at a central portion in the axial direction of the transport device.   The roller conveyor row has at least three rows, and the rotation direction of the conveyance roller of the roller conveyor row at one end is different from the rotation direction of the conveyance roller of another roller conveyor row. The transport apparatus according to any one of 1 to 11.   The transport apparatus according to claim 1, wherein the object to be transported is a drum can. The roller used for the conveying apparatus of any one of Claim 1 to 14.

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