JP2007210778A - Roller conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller conveyor capable of avoiding an endless belt from being detached from a driven roller even when the radius of curvature of a conveying path is set to be large, and reducing the noise during the conveyance. <P>SOLUTION: The roller conveyor 1 comprises a plurality of conveying rollers 2 juxtaposed to form a conveying path having a predetermined curvature substantially in a horizontal plane, a plurality of driven rollers 5a-5d juxtaposed along the conveying path, and an endless belt 4 arranged in an abutting state on each conveying roller 2 in the middle of suspension of the driven rollers 5a-5d. In the roller conveyor 1, the driving force of a motor M is transmitted to each conveying roller 2 via the endless belt 4, and an object to be conveyed is conveyed along the conveying path by the rotation of the conveying rollers 2. The driven rollers 5a-5d are rotatable around the axis substantially orthogonal to the plane formed by the conveying path to guide the endless belt 4, and a side face of the endless belt 4 is abutted on each conveying roller. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a roller conveyor in which a driving force of a driving unit is transmitted to each transport roller via an endless belt, and a transported object can be transported along a transport path by the rotation of the transport roller. The present invention relates to a roller conveyor in which a plurality of conveying rollers are arranged in parallel so as to have a predetermined curvature in a horizontal plane.

  As a means for conveying an object to be conveyed, a roller conveyor in which a plurality of rotatable rollers (conveyance rollers) are arranged in parallel along a conveyance path is widely used. In particular, the conveyance path has a predetermined curvature in a substantially horizontal plane. Various roller conveyors that can change the transport direction during the transport process have been proposed. An example of such a roller conveyor that can change the transport direction is disclosed in Patent Document 1.

  Such a conventional roller conveyor is fixed to a plurality of conveyance rollers arranged side by side along the conveyance path, a plurality of driven rollers arranged below the conveyance rollers and along the conveyance path, and an output shaft of the motor. The driving pulley, and a plurality of driven rollers and a V-belt suspended between the driving pulleys. Of these, the driven roller is rotatable about an axis substantially parallel to the surface forming the conveyance path to guide the V belt, and the upper surface of the V belt is disposed in contact with the lower portion of the conveyance roller. .

When the motor is driven to rotate the V-belt between the driving pulley and the driven roller, the conveying roller is rotated by the friction between the upper surface of the V-belt and the lower surface of the conveying roller. It is comprised so that a thing can be moved along a conveyance path | route. In other words, the driving force of the motor is transmitted to the conveying roller via the V belt, and the object to be conveyed is conveyed by the rotation of the conveying roller by the transmitted driving force.
JP-A-4-308106

  However, in the above-described conventional roller conveyor, the driven roller is rotatable about an axis substantially parallel to the surface formed by the conveyance path and guides the V-belt, and thus has the following problems. . Since the transport path has a predetermined curvature as described above, when the driven rollers are arranged along the transport path, the V-belt is less likely to bend (perpendicular to the suspension direction of the drive pulley or the driven roller). There is a problem that there is a possibility that it may be detached from the driven roller during use or the like.

  That is, a V-belt (including other endless belts such as a flat belt) made of a flexible member such as a resin or a rubber material is suspended in the pulley P (vertical direction a) as shown in FIG. While it is easy to bend, it is difficult to bend in the direction perpendicular to it (left-right direction b). It will come off from the driven roller. In the figure, symbol V denotes a conveying belt such as a V belt, and L denotes a rotation shaft of the pulley P.

  However, it is possible to bend in any direction, for example, it is possible to arrange a chain etc. along the transport roller and transmit the driving force of the motor through the chain etc. In that case, a sprocket etc. is necessary There is a problem that the configuration becomes complicated and the noise caused by the interference between the chain and the sprocket becomes large.

  The present invention has been made in view of such circumstances, and even if the curvature of the conveyance path is set large, the endless belt can be prevented from coming off from the driven roller, and noise during conveyance can be reduced. It is to provide a roller conveyor that can be used.

  According to the first aspect of the present invention, there are provided a plurality of transport rollers that are rotatably supported and arranged in parallel so as to form a transport path having a predetermined curvature in a substantially horizontal plane, and below the transport rollers, A plurality of driven rollers arranged side by side along the conveying path, and each driven roller and a drive pulley formed on the output shaft of the driving means are suspended so as to be able to circulate, and each of the driven rollers is suspended. And an endless belt disposed in contact with each of the transport rollers, and the driving force of the driving means is transmitted to each of the transport rollers via the endless belt. In the roller conveyor capable of transporting an object to be transported along a transport path, the driven roller is rotatable about an axis substantially orthogonal to a surface formed by the transport path and guides the endless belt. Side of the belt is characterized in that said set to each of the conveying roller and a state in which contact with.

  According to a second aspect of the present invention, in the roller conveyor according to the first aspect, the transport roller is formed of a substantially conical tapered roller having one end side smaller in diameter than the other end side, and the forward path side of the endless belt is Only the suspended driven roller is arranged below the transport path.

  According to a third aspect of the present invention, in the roller conveyor according to the first aspect, the transport roller is formed of a substantially conical taper roller having a smaller diameter on one end side than the other end side, and the lower surface side is inclined in parallel. By being provided, only the endless belt on the forward path side of the forward path side and the return path side below the transport path is brought into contact with the transport roller.

  According to a fourth aspect of the present invention, in the roller conveyor according to the first aspect, the transport roller is composed of a substantially cylindrical straight roller having substantially the same diameter on one end side and the other end side, and the endless belt. Only the driven roller that suspends the forward path side is arranged in parallel below the transport path.

  According to a fifth aspect of the present invention, in the roller conveyor according to the first aspect, the transport roller includes a substantially cylindrical straight roller having substantially the same diameter on one end side and the other end side, and the transport roller or Only the endless belt on the forward path side of the forward path side and the backward path side below the transport path is brought into contact with the transport roller by tilting the driven rollers.

  A sixth aspect of the present invention is the roller conveyor according to any one of the first to fifth aspects, wherein the endless belt is formed of a rectangular cross section, and a side surface of the endless belt is in surface contact with the conveying roller. It contact | abutted by, It is characterized by the above-mentioned.

  A seventh aspect of the present invention is the roller conveyor according to any one of the first to sixth aspects, wherein the transport roller is rotatably supported by the rotation shaft, and a predetermined value of the rotation shaft is determined. It is characterized by comprising stopper means for restricting the downward movement beyond the dimension.

  According to the first aspect of the present invention, the driven roller is rotatable about an axis substantially orthogonal to the surface formed by the conveyance path to guide the endless belt, and the side surface of the endless belt is in contact with each conveyance roller. Since it is in the contact state, the endless belt is guided by the driven roller while bending in a direction that is easy to bend. Therefore, even if the curvature of the conveyance path is set to be large, it is possible to avoid the endless belt from coming off from the driven roller, and since power is transmitted through the endless belt, noise during conveyance can be reduced.

  According to the invention of claim 2, the conveying roller is formed of a substantially conical taper roller having one end side smaller in diameter than the other end side, and only the driven roller that suspends the forward path side of the endless belt is below the conveying path. Therefore, it is possible to reliably avoid the return path side of the endless belt from coming into contact with the conveying roller.

  According to the invention of claim 3, the conveying roller is formed of a substantially conical tapered roller having one end side smaller in diameter than the other end side, and the lower surface thereof is arranged in parallel, so that the lower side of the conveying path. Since only the endless belt on the forward path side of the forward path side and the return path side in contact with the conveying roller is brought into contact with the conveyance roller, it is easy to contact only the forward path side of the endless belt without separating the return path side. Is possible. Further, since the endless belt on the return path side can be positioned below the transport path along with the forward path side, the entire roller conveyor can be reduced in size.

  According to the invention of claim 4, the conveying roller is composed of a substantially cylindrical straight roller having substantially the same diameter on one end side and the other end side, and only the driven roller that suspends the forward path side of the endless belt. Since they are arranged in parallel below the conveyance path, it is possible to reliably avoid the return path side of the endless belt from coming into contact with the conveyance roller even if the conveyance roller is a straight roller.

  According to the invention of claim 5, the conveying roller is formed of a substantially cylindrical straight roller having substantially the same diameter on one end side and the other end side, and the conveying roller or the driven roller are arranged in parallel while being inclined. Thus, only the endless belt on the forward path side of the forward path side and the return path side below the transport path is brought into contact with the transport roller, so that the endless belt on the return path side is positioned below the transport path along with the forward path side. Thus, the entire roller conveyor can be reduced in size, and it is possible to reliably avoid the forward path side of the endless belt from coming into contact with the conveying roller.

  According to the invention of claim 6, the endless belt is formed of a rectangular cross section, and its side surface is in contact with the transport roller in surface contact. By increasing the contact surface, the transmission of the driving force can be made more reliable.

  According to the seventh aspect of the present invention, the transport roller is rotatably supported by the rotation shaft, and includes the stopper means for restricting the downward movement of the rotation shaft by a predetermined dimension. When an object is conveyed, it is possible to restrict the conveyance roller at that portion from moving downward by a predetermined dimension or more, and it is possible to prevent an endless belt from being overloaded.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
In the roller conveyor according to the present embodiment, the driving force of the driving means is transmitted to each conveying roller via an endless belt, and the object to be conveyed can be conveyed along the conveying path by the rotation of the conveying roller. As shown in FIGS. 1 to 3, a roller conveyor body comprising a machine base 1a, frames F1 and F2, a conveying roller 2, driven rollers 5a to 5d, a receiving roller 5e, an endless belt 4, and driving means. As a motor M.

  The machine base 1a is extended along the conveyance path while being supported by a plurality of legs 1b, and is constructed by standing frames F1 and F2 along the edges. Here, as shown in FIG. 1, the conveyance path has a predetermined curvature in a substantially horizontal plane, and is configured to move and convey the object to be conveyed while curving. The frame F1 constitutes the outer wall surface of the roller conveyor, and the frame F2 constitutes the inner wall surface of the roller conveyor.

  The transport rollers 2 are rotatably supported around a rotating shaft 2a disposed across the frames F1 and F2, and a plurality of the transport rollers 2 are arranged in parallel so as to form a transport path having a predetermined curvature in a substantially horizontal plane. Is. The transport roller 2 is composed of a substantially conical taper roller whose one end side (inner side in the transport path) has a smaller diameter than the other end side (same outer side), and its upper surface 2b (see FIGS. 2 and 3) is approximately. It is in a horizontal state.

  The driven rollers 5a to 5d are arranged below the transport roller 2 and along the transport path. As shown in FIG. 2, the driven rollers 5a to 5d are arranged on the machine base 1a and form a transport path. The endless belt 4 can be guided by being rotatable about an axis L2 substantially orthogonal to the surface. The receiving roller 5e supports the side surface of the endless belt 4 facing downward, and prevents the endless belt 4 from drooping downward.

  The motor M is disposed on a motor base B extending from the inner leg portion 1b of the roller conveyor body, and can be moved by the tension adjusting unit 6. A drive pulley 3 for suspending the endless belt 4 is formed on the output shaft Ma of the motor M, and the endless belt 4 can circulate by rotating the drive pulley 3 as the motor M is driven. It is said. The drive pulley 3 is set at substantially the same height as the driven rollers 5a to 5d, and rotates about an axis L1 (that is, the axis of the output shaft Ma) that is substantially orthogonal to the surface that forms the conveyance path. It is configured.

  The endless belt 4 is made of a flexible member such as resin or rubber and has a substantially rectangular cross section (so-called flat belt), and is suspended between each driven roller 5a to 5d and the drive pulley 3 so as to be able to circulate. At the same time, the driven rollers 5c and 5d are arranged in a state where they are in contact with the lower surface of each conveying roller 2 in the middle of suspension. That is, the portion of the endless belt 4 suspended by the driven rollers 5c and 5d (referred to as the forward path side for convenience) has its side surface 4a (side surface facing upward) as shown in FIGS. Are in contact with the lower surface of each conveying roller 2 and when the endless belt 4 circulates, each conveying roller 2 can be rotated by the frictional force of the contact portion.

  Note that the portion of the endless belt 4 suspended from the driven rollers 5a to 5c (referred to as the return path side for convenience) has its side surface 4a not in contact with the lower surface of each conveying roller 2, as shown in FIG. They are separated from each other so that no force is transmitted due to the rotation of the endless belt 4. Thus, a portion that circulates in a direction different from the conveyance direction (return path side) can be separated from the conveyance roller 2 while a portion that circulates in the conveyance direction (outward path side) is brought into contact with the conveyance roller 2. .

  Here, as described above, the transport roller 2 is composed of a substantially conical taper roller having one end side smaller in diameter than the other end side, and its upper surface 2b is arranged in parallel in a substantially horizontal state. Is inclined with respect to the horizontal plane, and the forward path side of the endless belt 4 is brought into contact with each other, and the return path side can be easily separated without contacting. Moreover, the conveyance path | route of a bigger curvature can be made by comprising the conveyance roller 2 with a taper roller.

Next, the operation of the roller conveyor 1 will be described.
First, after the tension of the endless belt 4 is appropriately adjusted by the tension adjusting unit 6, the motor M is driven. When the drive pulley 3 rotates along with the rotation of the output shaft Ma driven by the motor M, the endless belt 4 suspended between the drive pulley 3 and the driven rollers 5a to 5d circulates.

  However, the endless belt 4 on the forward path side in the circulation process applies a rotational force to the transport roller 2 through the side surface 4a, and transports the object to be transported placed on the transport roller 2 by the rotational force. Transport along the route. On the other hand, the endless belt 4 on the return path circulates without contacting the transport roller 2, and thus applying a reverse rotational force to the transport roller 2 is avoided.

  According to the above-described embodiment, the driven rollers 5c and 5d are rotatable about the axis L2 substantially orthogonal to the surface formed by the conveyance path to guide the endless belt 4, and the side surface 4a of the endless belt 4 is The endless belt 4 is guided by the driven rollers 5c and 5d while being bent in a direction that is easy to bend because the endless belt 4 is in contact with each of the conveying rollers 2. Therefore, even if the curvature of the conveying path is set to be large, the endless belt 4 can be prevented from coming off from the driven roller, and power is transmitted through the endless belt 4, so that the power can be transmitted by a chain or the like. Thus, noise during transportation can be reduced.

  Furthermore, you may make it arrange | position the stopper means 7 as shown in FIG. 4 to the flame | frame F2 in the said roller conveyor. The stopper means 7 is for restricting the downward movement of the rotation shaft 2a of each conveying roller 2 by a predetermined dimension or more, and is fixed to the outer peripheral wall surface of the frame F2 with bolts 8. The bolt 8 is inserted through a long hole 7a extending in the up-down direction to couple and fix the stopper means 7 and the frame F2.

  On the other hand, the frame F2 is formed with a long hole F2a that allows movement in the vertical direction while passing through each rotary shaft 2a, and the upper end side of the stopper means 7 is positioned so as to close the lower part of the long hole F2a. . Thus, if the bolt 8 is inserted into an arbitrary position of the elongated hole 7a extending in the vertical direction, the position for closing the elongated hole F2a is moved up and down, and the dimension between the upper end of the stopper means 7 and the lower end of the rotary shaft 2 is increased. t can be variable. Thereby, when the conveyed product is conveyed, it is possible to restrict the conveyance roller 2 at that portion from moving downward by a predetermined dimension t or more, and to prevent the endless belt 4 from being overloaded. can do.

Next, a second embodiment according to the present invention will be described.
In the roller conveyor according to the present embodiment, the driving force of the driving means is transmitted to each transport roller via the endless belt, and the transported object is moved along the transport path by the rotation of the transport roller, as in the first embodiment. 5 to 7, as shown in FIGS. 5 to 7, a roller conveyor body comprising a machine base 1a, frames F1 and F2, a transport roller 2 ′, driven rollers 5a to 5d, and a receiving roller 5e The endless belt 4 and a motor M as driving means are mainly configured. In addition, the same code | symbol is attached | subjected to the component similar to 1st Embodiment, and those detailed description shall be abbreviate | omitted.

  The conveyance roller 2 ′ is composed of a substantially cylindrical straight roller having substantially the same diameter at one end side (inner side in the conveyance path) and the other end side (same outer side), and suspends the forward path side of the endless belt 4. Only the driven rollers 5c and 5d are juxtaposed below the transport path. That is, the forward path side of the endless belt 4 rotates around the lower side of the transport roller 2 ′ and rotates the transport roller 2 ′ by contact with the side surface 4a, and the return path side is outside the frame F2 (the transport path). It will go around on the outer side.

  Therefore, even if the conveyance roller 2 ′ is a straight roller, it is possible to reliably avoid the return path side of the endless belt 4 coming into contact with the conveyance roller 2 ′. Similarly to the first embodiment, the driven rollers 5c and 5d are rotatable about an axis L2 substantially orthogonal to the surface formed by the conveyance path to guide the endless belt 4, and the endless belt 4 Since the side surface 4a is in contact with each of the conveying rollers 2 ', the endless belt 4 is guided by the driven rollers 5c and 5d while bending in a direction that is easy to bend. Therefore, it is possible to avoid the endless belt 4 from coming off the driven roller even if the curvature of the conveyance path is set large. Of course, since power is transmitted through the endless belt 4, noise during conveyance can be reduced as compared with the power transmitted by a chain or the like.

Next, a third embodiment according to the present invention will be described.
In the roller conveyor according to this embodiment, as in the previous embodiment, the driving force of the driving means is transmitted to each conveyance roller via the endless belt, and the conveyance object is moved along the conveyance path by the rotation of the conveyance roller. As shown in FIG. 8, a roller conveyor main body comprising a machine base 1a, frames F1 and F2, a transport roller 2 ′, driven rollers 5a to 5d, receiving rollers 5e, and an endless belt can be transported. 4 and a motor M as drive means. In addition, the same code | symbol is attached | subjected to the component similar to previous embodiment, and those detailed description shall be abbreviate | omitted.

  Similarly to the second embodiment, the transport roller 2 'is composed of a straight roller, and is disposed so as to be rotatable over the frames F1 and F2. However, the support portion of the rotary shaft 2′a in the frame F2 is set lower than the support surface portion of the rotation shaft 2′a in the frame F1, so that each of the transport rollers 2 ′ can move along the transport path. Are arranged side by side while being inclined by an angle α.

  With such an inclination, only the forward path side (located on the right side in the figure) of the endless belt 4 is configured to abut on the conveyance roller 2 ′. That is, since the endless belt 4 circulates in the same plane on the forward path side and the return path side, if the conveying roller 2 ′ composed of a straight roller is tilted, the lower surface thereof is also tilted. Thus, the return path side can be separated while abutting.

  In the present embodiment, the forward path side and the backward path side are different from the previous embodiment, the part suspended by the driven rollers 5a to 5c is the forward path side, and the part suspended by the driven rollers 5c and 5d is the backward path side. It becomes. Of course, the conveyance roller 2 'may be inclined to the opposite side (inclination so that the outside of the conveyance path is low and the inside is high), and in that case, the forward path side and the backward path side are the same as in the previous embodiment. However, if the inclination is as in the present embodiment, the conveyance surface (upper surface) of the conveyance roller 2 ′ is lowered toward the inner side (right side in FIG. 8) of the conveyance path, so that a so-called bank can be formed.

  According to the present embodiment, the transport roller 2 ′ is a straight roller, and the transport roller 2 ′ is arranged in parallel while being inclined, so that only the forward path side of the endless belt 4 is brought into contact with the transport roller 2 ′. Therefore, the endless belt 4 on the return path side can be positioned below the transport path to reduce the size of the roller conveyor 1 as a whole, and the forward path side of the endless belt 4 is in contact with the transport roller 2 ′. It can be avoided reliably.

Next, a fourth embodiment according to the present invention will be described.
In the roller conveyor according to this embodiment, as in the previous embodiment, the driving force of the driving means is transmitted to each conveyance roller via the endless belt, and the conveyance object is moved along the conveyance path by the rotation of the conveyance roller. As shown in FIG. 9, a roller conveyor body comprising a machine base 1a, frames F1 and F2, a transport roller 2 ', driven rollers 5a to 5d, receiving rollers 5e, and an endless belt can be transported. 4 and a motor M as drive means. In addition, the same code | symbol is attached | subjected to the component similar to previous embodiment, and those detailed description shall be abbreviate | omitted.

  Similarly to the second embodiment, the transport roller 2 'is composed of a straight roller, extends in a substantially horizontal direction across the frames F1 and F2, and is rotatably arranged. However, the machine base 1a is inclined by an angle β as shown in the figure, and a plurality of driven pulleys 5a to 5d fixed on the machine base 1a are provided side by side while being inclined.

  With such an inclination, only the forward path side (located on the right side in the figure) of the endless belt 4 is configured to abut on the conveyance roller 2 ′. That is, since the endless belt 4 circulates in the same plane on the forward path side and the return path side, if the conveying roller 2 ′ composed of a straight roller is tilted, the lower surface thereof is also tilted. Thus, the return path side can be separated while abutting. Of course, the motor base B is inclined together with the machine base 1a so that the driving pulley 3 and the driven rollers 5a to 5d are located in the same plane.

  In the present embodiment, as in the third embodiment, the portion suspended by the driven rollers 5a to 5c is the forward path side, and the portion suspended by the driven rollers 5c and 5d is the return path side. Of course, the machine base 1a may be inclined to the opposite side (inclined so that the outside of the transport path is high and the inside is low). In that case, the forward path side and the return path side are the same as in the first and second embodiments. It becomes.

  According to the present embodiment, the transport roller 2 ′ is composed of a straight roller, and the driven rollers 5a to 5d are arranged side by side so that only the forward path side of the endless belt 4 is brought into contact with the transport roller 2 ′. Therefore, the endless belt 4 on the return path side can be positioned below the transport path to reduce the size of the roller conveyor 1 as a whole, and the forward path side of the endless belt 4 is in contact with the transport roller 2 ′. It can be avoided reliably.

  Although the present embodiment has been described above, the present invention is not limited thereto, and for example, driven rollers may be provided in parallel on the outside of the conveyance path. As long as the driven rollers are arranged side by side along the conveyance path and guide the endless belt while suspending, the material, the number of installed rollers, the arrangement position, and the like can be arbitrarily set. In the first embodiment, the transport roller 2 is a tapered roller, and the driven rollers 5a to 5d on both the forward path side and the return path side are disposed below the transport path. As described above, only the driven roller on the forward path side can be disposed below the transport path. In this case, it is possible to reliably avoid the return path side of the endless belt from coming into contact with the conveyance roller.

  Further, the endless belt is not limited to a flat belt as in the above-described embodiment, but may be a belt having a rectangular cross section and having a side surface that comes into contact with the conveying roller in surface contact. Thereby, for example, by increasing the side surface of the endless belt and increasing the contact surface with the conveying roller, the transmission of the driving force can be made more reliable. For example, as shown in FIGS. 10 and 11, endless belts 4 ′ and 4 ″ may be formed such that part of the side surfaces are flat and form contact surfaces 4 ′ a and 4 ″ a with the conveying roller 2.

  Furthermore, the tip is brought close to the middle of another conveyance conveyor H (which may be any conveyance means such as a roller conveyor, a belt conveyor, or a vibration conveyor), and the objects to be conveyed are joined to the conveyance conveyor H. It is also possible to apply to a roller conveyor 1 'in which the conveyance path is arcuate.

  A roller conveyor in which the driven roller is rotatable about an axis substantially orthogonal to the surface forming the conveyance path to guide the endless belt and the side surface of the endless belt is in contact with each conveyance roller. For example, the present invention can be applied to ones having different appearance shapes or other functions added.

The top view which shows the roller conveyor which concerns on the 1st Embodiment of this invention. Sectional view showing the roller conveyor (near the drive pulley and driven roller) Sectional view showing the roller conveyor (in the vicinity of the receiving roller) Side view showing stopper means applied to the roller conveyor Sectional drawing which shows the roller conveyor (follower roller vicinity) which concerns on the 2nd Embodiment of this invention. Sectional view showing the roller conveyor (near the drive pulley and driven roller) Sectional view showing the roller conveyor (in the vicinity of the receiving roller) Sectional drawing which shows the roller conveyor (follower roller vicinity) which concerns on the 3rd Embodiment of this invention. Sectional drawing which shows the roller conveyor (follower roller vicinity) which concerns on the 4th Embodiment of this invention. The enlarged schematic diagram which shows the cross section of the endless belt applied to the roller conveyor which concerns on other embodiment of this invention. The expansion schematic diagram which shows the cross section of the endless belt applied to the roller conveyor which concerns on further another embodiment of this invention. The top view which shows the roller conveyor which concerns on other embodiment of this invention, Comprising: What is used for the confluence | merging with another conveyance conveyor (A) Schematic diagram showing the direction in which the endless belt is easily bent in order to explain the problems of the conventional roller conveyor (b) AA line sectional view

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Roller conveyor 2, 2 'Conveyance roller 3 Drive pulley 4, 4', 4 "Endless belt 4a, 4'a, 4" a Contact surface 5a-5d Driven roller 5e Receiving roller 6 Tension adjustment part 7 Stopper means 8 Bolt M Motor (drive means)
Ma output shaft

Claims (7)

A plurality of conveying rollers that are rotatably supported and arranged side by side so as to form a conveying path having a predetermined curvature in a substantially horizontal plane;
A plurality of driven rollers arranged below the transport roller and along the transport path;
It is suspended so that it can circulate between each said driven roller and the drive pulley formed in the output shaft of a drive means, and it was arrange | positioned in the state contact | abutted with each said conveyance roller in the middle of suspension of each said driven roller. An endless belt,
A driving force of the driving means is transmitted to each conveying roller via the endless belt, and a roller conveyor capable of conveying the object to be conveyed along the conveying path by the rotation of the conveying roller.
The driven roller is rotatable about an axis substantially orthogonal to the surface that forms the conveyance path, guides the endless belt, and the side surface of the endless belt is in contact with each of the conveyance rollers. A roller conveyor characterized by that.   The transport roller is composed of a substantially conical taper roller whose one end is smaller in diameter than the other end, and only the driven roller that suspends the forward path side of the endless belt is juxtaposed below the transport path. The roller conveyor according to claim 1.   The transport roller is formed of a substantially conical taper roller having one end side smaller in diameter than the other end side, and its lower surface side is inclined and arranged side by side so that the forward path side and the return path side below the transport path 2. The roller conveyor according to claim 1, wherein only an endless belt on an outward path side is brought into contact with the conveying roller.   The conveying roller is composed of a substantially cylindrical straight roller having substantially the same diameter on one end side and the other end side, and only a driven roller that suspends the forward path side of the endless belt is arranged below the conveying path. The roller conveyor according to claim 1, wherein the roller conveyor is provided.   The conveying roller is formed of a substantially cylindrical straight roller having substantially the same diameter on one end side and the other end side, and the conveying roller or the driven roller is arranged in parallel while being inclined, so that the conveying roller is arranged below the conveying path. 2. The roller conveyor according to claim 1, wherein only an endless belt on the forward path side of a certain forward path side and return path side is brought into contact with the transport roller.   The roller conveyor according to any one of claims 1 to 5, wherein the endless belt has a rectangular cross section, and a side surface of the endless belt is in contact with the conveying roller by surface contact. .   7. The conveyance roller according to claim 1, further comprising a stopper unit that is rotatably supported by a rotation shaft of the conveyance roller and restricts the movement of the rotation shaft downward by a predetermined dimension or more. The roller conveyor as described in any one.

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