JP2009184804A - Unit for roller conveyor, and roller conveyor using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller conveyor with excellent maintenability and with improved controllability in conveyance speed, by facilitating attachment/detachment of a unit for a roller conveyor to/from the roller conveyor and improving a rotational responsiveness in each unit for a roller conveyor. <P>SOLUTION: The unit for a roller conveyor includes: a single roller body 12 or a plurality of roller bodies 12 constituting a conveyance surface conveying a conveyed object 200; motors 14 as drive means rotary-driving the roller bodies 12 separately; holding frames 16 holding the roller bodies 12 and the motors 14, respectively; conveyed object detection means 18 detecting that the conveyed object 200 is placed on the conveyance face; and a control part 30 controlling power supply to the motors 14 based on detection results of the conveyed object detection means 18. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a roller conveyor unit and a roller conveyor using the same, and more particularly to a roller conveyor unit having excellent maintainability and a roller conveyor using the same.

As one form of conveyor for transporting a transported object, a roller conveyor that directly transports the transported object on a rotationally driven roller without using an infinite edge member such as a belt on the transport surface. There is.
By employing such a roller conveyor, the rotational drive speed of each roller can be precisely adjusted. In other words, a roller provided with a so-called accumulation function that temporarily stores a conveyed product on the roller conveyor by increasing or decreasing the conveying speed of the conveyed product in an arbitrary section on the roller conveyor. A conveyor can be provided (see Patent Document 1).

In the roller conveyor disclosed in Patent Document 1, when each roller is rotationally driven, the motor output is used only for the rotational driving force of the roller, so that the loss of the motor output can be greatly reduced. It is used for.
JP 2001-80713 A

  According to the roller conveyor described in Patent Document 1, it is possible to realize a high-speed conveyance of a conveyed product and an accumulation function of the conveyed product with energy saving. However, if such a function is used repeatedly, the burden on each motor increases, and the life of the motor tends to be shortened. In addition, since all the motors in the roller conveyor are not damaged at the same time, it is necessary to maintain a part of the roller conveyor. However, at present, there is no disclosure of a structure that can easily remove only a part of the roller conveyor, and it is necessary to disassemble a large part of the roller conveyor even though only a part of the roller conveyor is to be replaced. There is a problem that the maintainability of the conveyor is low.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. The object of the present invention is to make it easy to attach / detach the roller conveyor unit constituting the roller conveyor to / from the roller conveyor, and to provide a rotational response in each roller conveyor unit. It is an object of the present invention to provide a roller conveyor having improved maintainability and improved controllability of the conveyance speed, and a roller conveyor unit used therefor.

The present invention has the following configuration.
That is, one or a plurality of roller bodies constituting a transport surface for transporting a transported object, drive means for individually rotating and driving the roller bodies, a holding frame for holding the roller bodies and the drive means, and the transport A transport object detection unit that detects that the transport object is placed on a surface; and a control unit that controls power supply to the drive unit based on a detection result of the transport object detection unit. It is the unit for roller conveyors characterized by these.

  Further, the driving means adjacent in the transport direction of the transported object are arranged such that the separation distance between the center positions of the disposed positions is equal to or greater than the width dimension of the drive means in a direction orthogonal to the transport direction of the transported object. It is characterized by being arranged respectively. By adopting this configuration, the roller conveyor unit can be easily attached and detached.

  Further, the driving means adjacent in the transport direction of the transported object are alternately disposed at a right end position and a left end position of the roller body in a direction orthogonal to the transport direction of the transported object. And By adopting this configuration, it is possible to more easily attach and detach the roller conveyor unit.

Moreover, it can also be set as the roller conveyor characterized by arrange | positioning two or more units for roller conveyors concerning said either continuously.
Furthermore, the roller conveyor may further include an overall control unit that performs overall control of the operation of the control unit in the roller conveyor unit.

  According to the roller conveyor unit and the roller conveyor using the same according to the present invention, the roller conveyor unit that is a part of the roller conveyor can be easily attached to and detached from the roller conveyor. In the unit, it becomes easy to individually control the rotation of the roller body according to the placement state of the conveyed product. Thereby, it is possible to provide a roller conveyor that is excellent in maintainability and capable of finely controlling the conveyance speed of the conveyed product.

  Hereinafter, an embodiment of a roller conveyor unit in the present embodiment and a roller conveyor using the same will be described. FIG. 1 is a front perspective view of a roller conveyor in the present embodiment. FIG. 2 is a front view of the roller conveyor according to the present embodiment as viewed from the conveyance direction of the conveyed product. FIG. 3 is a bottom view of the roller conveyor in the present embodiment. FIG. 4 is a plan view of the roller conveyor in the present embodiment. FIG. 5 is a front view of the roller conveyor according to the present embodiment as viewed from a direction orthogonal to the conveyance direction of the conveyed object. In the present embodiment, a roller conveyor having a short conveyance extension is described for convenience of explanation. However, the conveyance extension of a conveyance object in the actual roller conveyor 100 can be set to an arbitrary conveyance extension.

  As shown in FIG. 1, the roller conveyor 100 according to the present embodiment is configured such that a plurality of roller conveyor units 10 are serially arranged along a conveyance direction on a main body frame 110 that is assembled in a form matched to the conveyance direction of a conveyed product 200. It is comprised by arrange | positioning. In the present embodiment, after the roller conveyor unit 10 is placed on the main body frame 110 formed in a linear shape, the roller conveyor 100 is constructed by screwing portions that are in contact with each other. The roller conveyor unit 10 can be attached to and detached from the roller conveyor 100 very easily.

  As shown in FIGS. 1 and 2, the main body frame 110 is formed in a height dimension that can accommodate the motor 14 and the controller 30 of the roller conveyor unit 10 in the internal space of the main body frame 110. The main body frame 110 in this embodiment is constructed by connecting unit frames 110A having joint portions that can be connected to each other. By adopting the form in which the main body frame 110 is constructed by the unit frame 110A in this way, a wide variety of main body frames 110 can be constructed by combining the unit frames 110A having various shapes, and an inexpensive and multifunctional roller. A conveyor 100 can be provided.

  As shown in FIG. 1, each roller conveyor unit 10 constituting the roller conveyor 100 includes two roller bodies 12 and 12, and motors 14 and 14 that are driving means for individually rotating and driving the roller bodies 12. Is held by the holding frame 16. On the surface of the roller body 12, a slip roller 12A formed in a cylindrical shape by rubber, plastic or the like is mounted. Since the inner diameter dimension of the slip roller 12A is formed slightly larger than the outer diameter dimension of the rotating shaft 12Z of the roller body 12, when the weight of the conveyed product 200 does not act on the slip roller 12A, the inner diameter dimension of the rotating shaft 12Z. The rotation is not transmitted to the slip roller 12A, the slip roller 12A does not rotate, and only the rotating shaft 12Z rotates. In contrast, when the weight of the conveyed product 200 acts on the slip roller 12A, the frictional force between the inner peripheral surface of the slip roller 12A and the outer peripheral surface of the rotary shaft 12Z increases, and the rotation of the rotary shaft 12Z is transmitted to the slip roller 12A. Then, the rotating shaft 12Z and the slip roller 12A rotate together.

  The holding frame 16 includes a plate portion 16A that holds the motor 14, a side wall portion 16B that rotatably holds the roller body 12, and an upper surface cover 16C. As shown in FIG. 2, the plate portion 16A is formed in a flat plate, and the side wall portion 16B and the upper surface cover 16C are each formed in an L-shaped cross section. Both end edges of the plate portion 16A are screwed in a state of being sandwiched between the upper surface of the unit frame 110A and the lower surface of the side wall portion 16B. The roller body 12 is rotatably mounted on the side wall portion 16B. The top cover 16C is fixed to the side wall portion 16B by screws.

As shown in FIG. 3, the motors 14, 14 held by the plate portion 16 </ b> A are arranged alternately on the right end portion and the left end portion of each roller body 12 along the extending direction of the conveyance path. Yes. By adopting such an arrangement of the motors 14, it is possible to reduce the arrangement interval of the roller bodies 12, and it is easy to reduce the size of the roller conveyor unit 10. The arrangement interval in the axial direction of the roller bodies 12 of the motors 14 adjacent to each other in the conveyance direction of the conveyance object 200 (a direction orthogonal to the conveyance direction of the conveyance object 200) may be at least the width dimension of the motor 14.
The output shafts of the motors 14 are arranged so as to face the front end side of the roller body 12. The driving force from the motor 14 is transmitted by an endless rubber belt 40 wound between the rotating shaft of the roller body 12 and the output shaft of the motor 14. The rubber belt 40 preferably has a round cross section.

  The conveying surface of the conveyed product 200 in the roller conveyor 100 is the upper surface of the roller body 12. On the upper surface cover 16 </ b> C of the support frame 16, a fixing tool 22 is provided for fixing the guide member 20 at a position above the upper surface position of the roller body 12. The guide member 20 can be disposed so as to project to the upper position of the roller body 12 in accordance with the dimensions of the conveyed product 200 by appropriately changing the shape of the guide member 20 and the shape of the fixture 22. It is preferable to provide a cushioning material on the inner wall surface of the guide member 20. When the transport speed of the transported object 200 is sufficiently low, or when it is guaranteed that the transported object 200 is transported without departing from the transport surface of the roller conveyor 100, the guide member 20 is disposed. Of course, it can be omitted.

  Thus, since the roller conveyor unit 10 has a simple configuration in which the roller body 12 and the motor 14 are integrally attached to the support frame 16, the roller conveyor 100 can be easily attached to and detached from the main body frame 110. In addition, since the roller conveyor unit 10 has a short extension with respect to the entire conveyance path, even if the roller conveyor 100 is broken, it is only necessary to replace the roller conveyor unit 10 of the broken part. The time required for the recovery is short, and an unexpected stagnation of the conveyed product 200 can be prevented as much as possible.

  As shown in FIG. 5, the side wall 16B detects the presence / absence of the conveyed product 200 on the roller body 12 by detecting the rotational state of the slip roller 12A at the rotating shaft support portion of each roller body 12. Means 18 are provided. The conveyed product detection means 18 in the present embodiment is disposed in a portion that supports the detected body 18A made of a magnet embedded in the slip roller 12A of the roller body 12 and the rotating shaft 12Z of the roller body 12, and changes the magnetic force. It is comprised by the detection sensor 18B which consists of a Hall element etc. to detect. A detection result (whether or not the slip roller 12 </ b> A is rotated) by the conveyed product detection unit 18 is transmitted to the control unit 30 disposed in the lower space of the support frame 16. In the present embodiment, the control unit 30 is disposed on the lower surface of the motor 14. Of course, the motor 14 and the control unit 30 are insulated from each other.

When the control unit 30 receives information on the rotation state of each roller body 12 (the state of the presence or absence of the transported object 200 on the roller body 12) detected by the transported object detection unit 18, the control unit 30 is adjacent to the direction in which the transported object 200 is transported. The rotation speed of the roller body 12 is adjusted by controlling the supply of power (electric power) to the motor 14 that drives the roller body 12 to be operated. By performing such control, the conveyed product 200 can be smoothly conveyed.
In the present embodiment, the roller conveyor unit 10 has been described as having only two sets of roller bodies 12, 12 and motors 14, 14, but multiple sets of roller bodies 12, 12,. When the roller conveyor unit 10 having the motors 14, 14,... Is employed, it is very convenient when the conveyed product 200 is smoothly conveyed.

  Incidentally, since a plurality of roller conveyor units 10, 10,... Are normally connected to the roller conveyor 100, the operation control of the motor 14 is controlled by the control unit 30 disposed in each roller conveyor unit 10. An overall control unit (not shown) for synchronizing the roller conveyor unit 10 and the roller conveyor 100 is required. If the control unit 30 provided in each roller conveyor unit 10 is provided with an external output terminal and a communication cable capable of connecting the external connection terminals is provided, each control unit 30 is connected to the overall control unit. Can be made.

  In the present embodiment, it is assumed that a general personal computer installed with a control program capable of individually controlling the conveyance speed of the conveyed product 200 in each roller conveyor unit 10 is assumed as the overall control unit. Yes. By disposing such an overall control unit, the operations of the roller body 12 and the motor 14 between the adjacent roller conveyor units 10 can be appropriately controlled, so that the rotational speed between the adjacent roller bodies 12 can be controlled. The impact applied to the conveyed product 200 due to the difference can be eliminated. Such a roller conveyor 100 is particularly suitable for conveying precision parts and precision equipment.

The roller conveyor unit 10 according to the present embodiment and the roller conveyor 100 using the roller conveyor unit 10 according to the present embodiment have been described above. However, the roller conveyor unit 10 according to the present invention and the roller conveyor 100 using the roller conveyor unit 100 according to the present invention are implemented in this embodiment. The form is not limited.
For example, in this embodiment, the roller conveyor unit 10 is configured by two sets of roller bodies 12 and 12 and motors 14 and 14, but the roller body 12 and the motor 14 that drives the roller body 12 are one set. Of course, it may be configured by arranging three or more sets. The roller body 12 and the output shaft of the motor 14 are connected by a rubber belt 40. However, a form in which the rotation shaft 12Z of the roller body 12 and the output shaft of the motor 14 are directly connected using a gear (not shown) is employed. You can also.

  Moreover, although the roller conveyor 100 in the above embodiment demonstrated the form formed in linear form, if the unit frame 110A formed in the curve shape which comprises a curve part is employ | adopted, the roller conveyor which has a curve part will be demonstrated. Of course, it is possible to provide a roller conveyor 100 that circulates the conveyed product 200.

  Further, in the present embodiment, the detected object 18A such as a magnet embedded in the slip roller 12A of the roller body 12 is used as the conveyed object detection means 18 for detecting whether or not the conveyed object is passing over the roller body 12. In the above description, the detection sensor 18B made up of a Hall element or the like disposed on the side wall 16B of the holding frame 16 has been described. However, a transport object detection unit that directly detects a transport object passing over the roller body 12 is provided. Of course it is possible to adopt. As such a transported object detection means 18, a light irradiating means is provided from one side wall part 16 to the other side wall part, and a light receiving means is provided on the other side wall part, thereby providing a light transmission sensor. it can.

  By adopting this form, the slip roller 12A and the roller shaft 12Z rotate as one body without causing the weight of the conveyed product 200 to act for some reason, and erroneously recognize the passing state of the conveyed product 200. Can be prevented and convenient.

It is a front perspective view of the roller conveyor in this Embodiment. It is the front view which faced the roller conveyor in this Embodiment from the conveyance direction of a conveyed product. It is a bottom view of the roller conveyor in this embodiment. It is a top view of the roller conveyor in this embodiment. It is the front view which faced the roller conveyor in this embodiment from the direction orthogonal to the conveyance direction of a conveyed product.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Roller conveyor unit 12 Roller body 12A Slip roller 12Z Rotating shaft 14 Motor 16 Holding frame 16A Plate part 16B Side wall part 16C Upper surface cover 18 Conveyed matter detection means 18A Detected object 18B Detection sensor 20 Guide member 22 Fixing tool 30 Control part 40 Rubber belt 100 Roller conveyor 110 Main frame 110A Unit frame 200 Conveyed material

Claims (5)

One or a plurality of roller bodies constituting a conveying surface for conveying a conveyed product;
Driving means for individually rotating the roller body;
Holding frames for respectively holding the roller body and the driving means;
A transport object detecting means for detecting that the transport object is placed on the transport surface;
A roller conveyor unit, comprising: a control unit configured to control power supply to the drive unit based on a detection result of the conveyed product detection unit.   The driving means adjacent in the transport direction of the transported object are arranged in such a manner that a separation distance between the center positions of the disposed positions is equal to or larger than the width dimension of the drive means in a direction orthogonal to the transport direction of the transported object. The roller conveyor unit according to claim 1, wherein the roller conveyor unit is disposed.   The driving means adjacent in the transport direction of the transport object are alternately arranged at a right end position and a left end position of the roller body in a direction orthogonal to the transport direction of the transport object. The roller conveyor unit according to claim 2.   A roller conveyor comprising a plurality of roller conveyor units according to any one of claims 1 to 3 arranged continuously.   The roller conveyor according to claim 4, further comprising an overall control unit that performs overall control of the operation of the control unit in the roller conveyor unit.

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