JP2018083677A - Transport device and weighing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transport device and a weighing device having a simple structure which can easily mount and dismount a motor suspended from a frame supporting a conveyance unit.SOLUTION: A conveyance device for conveying an article includes a motor, a conveyance unit which is driven by the motor and conveys the article, a frame which supports the conveyance unit, a holding unit which is attached to the frame and holds the motor, and a fixture for fixing the holding unit and the motor. When the fixture is removed, the holding unit holds the motor in the substantially same posture as when the fixture is fixed, on the surface opposite to the surface on the conveyance unit side of the frame.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a transport device and a weighing device.

  Distribution centers that handle deliverables have limited installation space for transport devices that transport articles (delivery goods). Patent Document 1 describes a small-sized transport device provided with a driving motor on the lower side of the transport conveyor.

JP-A-6-43010

  By the way, there are many cases where the distribution center is operated 24 hours a day, 365 days a year, and when there is a failure in the transport device, quick recovery is required. However, in the transport apparatus described in Patent Document 1, the driving motor disposed on the lower side of the transport conveyor is large and heavy, and therefore requires a lot of time and manpower for maintenance work such as replacing the motor. For example, at least two workers are required to hold a motor of 10 kg or more at the place where the transfer device is installed, and to remove or attach the fixing bolt of the motor held by another worker. Met.

  The present invention has been made in view of the above points, and provides a conveyance device having a simple structure in which a driving motor suspended from a frame supporting a conveyance unit can be easily attached and detached. For the purpose. Moreover, an object of this invention is to provide the weighing | measuring apparatus provided with the said conveying apparatus.

The transport apparatus of the present invention has at least the following configuration.
A conveying device for conveying an article,
A motor,
A transport unit that is driven by the motor and transports articles;
A frame that supports the transport unit;
A holding part attached to the frame and holding the motor;
A fixing tool for fixing the holding portion and the motor;
The holding unit holds the motor on the surface side of the frame opposite to the surface on the transport unit side in a substantially same posture as when fixed by the fixing tool when the fixing tool is removed. Features.

  In addition, the weighing device of the present invention includes the transport device according to the present invention, and includes a mass weighing unit that is disposed between the fixed base and the frame of the transport device and measures the mass of an article transported by the transport device. It is characterized by that.

ADVANTAGE OF THE INVENTION According to this invention, the conveyance apparatus of a simple structure which can attach or detach easily the motor for a drive suspended with respect to the flame | frame which supports a conveyance part can be provided.
Moreover, according to this invention, the weighing | measuring apparatus provided with the said conveying apparatus can be provided.

The whole conceptual diagram which shows an example of the weighing | measuring apparatus which employ | adopted the conveying apparatus which concerns on embodiment of this invention. FIG. 2 is a top view of the weighing device shown in FIG. 1. The figure for demonstrating the article size measurement part of a weighing | measuring apparatus, (a) is a front view of a portal gate, (b) is a side view of a portal gate. The side surface conceptual diagram for demonstrating the conveying apparatus which concerns on embodiment of this invention. The figure for demonstrating a conveying apparatus, (a) is a perspective view of a motor and a holding part, (b) is a bottom view of a holding part. The figure for demonstrating the weighing | measuring apparatus which concerns on one Embodiment of this invention, (a) The figure for demonstrating the weighing | measuring apparatus which has a holding part which touches the conveyance part provided on the mass measurement part on the surface, (B) is a figure for demonstrating the weighing | measuring apparatus which has a holding | maintenance part which rotates a motor about 90 degrees compared with the example shown to (a), (c) is a box with which the conveyance part is suspended. The figure for demonstrating the weighing | measuring apparatus which has a holding part holding a motor in an inside.

  The conveyance apparatus which concerns on embodiment of this invention is a conveyance apparatus which conveys articles | goods. The conveyance device is driven by the motor, conveys the article to convey the article, a frame that supports the conveyance unit, a holding unit that is attached to the frame and holds the motor, and the holding unit and the motor are fixed. The holding part holds the motor in the same posture as that when the fixing part is fixed with the fixing part when the fixing part is removed. To do.

  Hereinafter, a transport device according to an embodiment of the present invention will be described with reference to the drawings. The embodiment of the present invention includes the contents shown in the drawings, but is not limited to this. In the following description of each drawing, the same parts as those already described are denoted by the same reference numerals, and a part of the overlapping description is omitted.

In the embodiment of the present invention, a weighing device including a transport device will be described.
As shown in FIGS. 1 to 3, in this embodiment, the weighing device 100 includes a transport device 1, a mass weighing unit 12 b that measures the mass of the article W, a length (vertical), and a width ( Horizontal), an article size measuring unit 60 for measuring the size such as height, a control device 22 (control unit), and the like.
The transport apparatus 1 includes a transport unit 10 including a belt conveyor 10a, a transport unit 11 including a belt conveyor 11a, and the like. The belt conveyor 10a is rotationally driven by a motor 101 as a drive source. The belt conveyor 11a is rotationally driven by a motor 31 as a drive source.

  Article detection sensors 16a to 16h that detect the article W along the belt conveyer 10a and the belt conveyer 11a constituting the conveyance device are arranged at predetermined intervals, and detect the passage of the article in the course of conveyance.

  Between the belt conveyor 10a and the belt conveyor 11a, a side edge detection unit 6 as an article size measuring unit 60 is disposed. The side end detection unit 6 includes a pair of light emitting units 6a and light receiving units 6b, and a plurality of side end detection units 6 are arranged across the conveyance path, and detect both side ends of a predetermined position of the article being conveyed. Specifically, the side edge detection unit 6 has a large number of light emitting units 6a arranged at regular intervals along the longitudinal direction on the horizontal side 19a of the gate-shaped frame 19 straddling the article conveyance path, and the horizontal side It has a structure in which the light receiving portion 6b is disposed opposite to the lower side of the conveyance path facing 19a. In the side edge detection unit 6, the light receiving unit 6b may be disposed on the horizontal side 19a of the portal frame 19, and the light emitting unit 6a may be provided below the conveyance path. The control device 22 can obtain the width of the article W based on the signal from the light receiving unit 6b and the position of the light receiving unit 6b.

  Further, as shown in FIG. 3, the portal frame 19 is provided with a plurality of light emitting portions 21 a and light receiving portions 21 b of the detecting portion 21. Specifically, a large number of light emitting portions 21a are arranged in parallel at regular intervals from one position on the opposite side of the vertical side portions 19b and 19c of the portal frame 19 toward the horizontal side portion 19a from the position near the conveying surface (lower part). The light receiving portion 21b is disposed opposite to the opposite surface of the vertical side portion on the side. The mounting positions of the light emitting unit 21a and the light receiving unit 21b may be reversed. The control device 22 can obtain the height of the article W (the height of the article in the vertical direction with reference to the conveyance surface) based on the signal from the light receiving section 21b and the position of the light receiving section 21b.

  Further, the control device 22, for example, at the speed of the article W conveyed by the belt conveyor, the detection signal from the light receiving unit 6 b or the light receiving unit 21 b, and the time required for the article W to pass through the portal frame 19. Based on this, the length of the article W (the length in the transport direction) is calculated by multiplying the time by the speed of the article W.

  The article size measuring unit of the weighing apparatus 100 is not limited to the above-described embodiment as long as it can measure the length (length), width (width), height, and the like of the article W. The structure which measures using a measuring apparatus may be sufficient.

  The mass weighing unit 12b of the weighing device 100 includes, for example, a load cell (a strain gauge attached to a strain generating body). In the present embodiment, the frame 11f that supports the transport unit 11 is disposed on the large support frame 12a by the support 11b. Mass measuring portions 12b are arranged at substantially lower corners of the support frame 12a. The mass measuring unit 12b is placed on a fixed base 18 (base) whose upper surface is kept horizontal, so that the mass of all articles W placed on the transport unit 10 and the transport unit 11 can be measured. It is configured. The control device 22 can obtain the mass of the article W based on the weighing signal from the mass weighing unit 12b.

  As shown in FIG. 4, the conveyance device 1 according to the embodiment of the present invention supports a conveyance unit 11 including a belt conveyor 11 a that conveys an article W, a motor 31 that drives the conveyance unit 11, and the conveyance unit 11. Frame 11f, and a holding portion 35 that suspends and holds the motor 31 in a temporarily fixed state on the opposite surface (lower surface 11s) of the frame 11f on the conveyance portion side. Specifically, the belt conveyor 11a includes a rotation shaft 11ra, a rotation shaft 11rb, and an endless belt 11c. The endless belt 11c is spanned between the rotating shaft 11ra and the rotating shaft 11rb.

The holding portion 35 extends from the frame contact flat portion 35a that contacts the lower surface 11s of the frame 11f, and extends from the frame contact flat portion 35a, and is disposed at a position spaced apart from the lower surface 11s of the frame 11f by a predetermined distance. Motor receiving surface portion 35b. The holding part 35 is fixed to the lower surface 11s of the frame 11f by a fixing member 351 such as a bolt. The holding portion 35 is configured to be able to hold the locking portion 31T protruding in the horizontal direction from the upper end portion of the motor 31 in a temporarily fixed state by the motor receiving surface portion 35b. In the present embodiment, a metal rectangular flat plate portion is provided as the locking portion 31T on the upper portion of the main body portion of the motor 31, and the motor main body portion and the flat plate portion (locking portion 31T) are fixing members such as bolts. 39 is fixed.
In the present embodiment, the holding portion 35 has two holding portions 35A and 35B, and is arranged so that the motor receiving surface portion 35b faces each other on the lower surface 11s of the frame 11f.

  Further, the transport device 1 according to the embodiment of the present invention includes a drive belt 32 that transmits the driving force of the motor 31 to the belt conveyor 11 a of the transport unit 11. Specifically, the drive belt 32 is stretched over a motor pulley 31p provided on the motor 31 and a roller pulley 11p provided on the rotation shaft 11ra of the belt conveyor 11a. Further, the transport device 1 includes an adjustment unit 41 that adjusts the attachment position of the motor 31 with respect to the holding unit 35 so that the tension of the drive belt 32 can be adjusted. In the present embodiment, the adjustment unit 41 is a bolt provided on the holding unit 35 so as to be movable in a direction orthogonal to the rotation axis direction of the motor 31, and the tip of the bolt presses the locking portion 31 </ b> T of the motor 31. Thus, the mounting position of the motor 31 with respect to the holding portion 35 can be easily adjusted.

  In addition, as illustrated in FIG. 5, the holding unit 35 extends in a direction orthogonal to the conveyance direction by the conveyance unit 11. The motor 31 is held in a temporarily fixed state so as to be movable in its extending direction (a direction orthogonal to the transport direction by the transport unit). The motor 31 is configured to be slidable along the extending direction of the holding portion 35. A smooth surface having a small frictional resistance is preferably formed on the sliding surface of the motor receiving surface portion 35b of the holding portion 35 and the locking portion 31T of the motor 31. That is, during maintenance, the motor 31 can be easily pulled out toward the front side of the frame 11f while sliding toward the front side. Further, the motor 31 can be easily attached to the frame 11f by sliding in the opposite direction.

In addition, the transport device includes a fixing member 34 (fixing tool) such as a bolt that fixes the motor 31 and the holding unit 35. The holding portion 35 has a fixing hole portion 35h into which the fixing member 34 is fitted. As shown in FIGS. 4 and 5B, the fixing hole 35 h is formed as a long hole in the adjustment direction by the adjustment unit 41.
That is, with the fixing member 34 such as a bolt fitted in the fixing hole 35h, the adjustment unit 41 adjusts the positional relationship between the motor 31 and the holding unit 35 along the long hole of the fixing hole 35h. Thus, after adjusting the tension of the drive belt 32, the positional relationship between the motor 31 and the holding portion 35 can be reliably fixed by the fixing member 34.

Next, a procedure for replacing the motor of the transport device according to the embodiment of the present invention will be described.
It is assumed that the failed motor 31 is attached to the holding portion 35 when the motor is replaced, and the motor 31 is fixed to the holding portion 35 by the fixing member 34.

  Remove various wires. Specifically, an encoder wire (not shown) is removed from the encoder 51, and a three-phase power supply wire (not shown) is removed from the motor 31.

Next, the encoder 51 and the bracket 52 are removed from the motor 31.
Next, the fixing member 34 such as a bolt for fixing the locking portion 31T and the holding portion 35 of the motor 31 is loosened.
Then, the adjustment screw (adjustment unit 41) is loosened.
Next, the drive belt 32 is removed from the motor pulley 31p and the roller pulley 11p.

  Then, the fixing member 34 such as a bolt is removed from the fixing hole 35 h of the holding portion 35.

  Next, the motor 31 is slid on the front side (the direction orthogonal to the conveyance direction and the rotation axis of the motor) on the motor receiving surface 35b of the stay (holding portion 35), and the motor 31 is stayed (holding portion 35). Remove from.

  If the failed motor 31 can be repaired in a short time, it is repaired and a normal motor 31 is obtained. When the motor cannot be repaired in a short time, the normal motor 31 prepared in advance is attached to the transport apparatus 1. Hereinafter, an example of a procedure for attaching the normal motor 31 to the transport apparatus 1 will be described.

  Specifically, the normal motor 31 is incorporated by sliding on the motor receiving surface portion 35b of the stay (holding portion 35).

  Then, the fixing screw and the holding portion fixing screw (fixing portion) are temporarily tightened.

Next, the drive belt is attached to the motor pulley 31p and the roller pulley 11p.
Then, the adjustment screw (adjustment unit 41) is tightened.
Next, the fixing bolt (fixing member 34) is tightened to fix the locking portion 31T and the holding portion 35 of the motor 31.
Then, an encoder 51 and a bracket 52 are attached to the motor 31.

  Next, various wires are connected. Specifically, an encoder wire (not shown) is connected to the encoder 51, and a three-phase power supply wire (not shown) is connected to the motor 31.

As described above, the transport device 1 according to the embodiment of the present invention includes the transport unit 11 including the belt conveyor 11a that transports articles, the motor 31 that drives the transport unit 11, and the frame that supports the transport unit 11. 11f, a holding unit 35 that is attached to the frame 11f and holds the motor 31, and a fixture (fixing member 34) that fixes the holding unit 35 and the motor 31. When the fixing device (fixing member 34) is removed, the holding unit 35 is configured so that the motor 31 is fixed on the surface of the frame 11f opposite to the surface on the conveyance unit side when the fixing device (fixing member 34) is fixed. Hold in the same posture. Specifically, the holding unit 35 suspends and holds the motor 31 in a temporarily fixed state on the opposite surface (lower surface 11s) of the frame 11f on the conveyance unit side.
That is, the conveying device 1 is in a state in which the motor 31 is temporarily fixed by the holding portion 35 (when the fixing device (fixing member 34) is fixed) even when the fixing screw that fixes the holding portion 35 and the motor 31 is removed. Suspended and held in the same posture). That is, in order to move the motor 31 to the near side of the frame 11f without dropping the motor 31 downward, it is not necessary to separately hold the motor with a holding tool.
In addition, the motor can be easily attached and detached during maintenance.
Since the motor is suspended from the frame, the motor can be easily replaced with a small number of people.

  In addition, the weighing device 100 according to the embodiment of the present invention includes the transport device 1 and includes a mass measurement unit 12b such as a load cell disposed between the fixed base 18 and the frame of the transport device 1. The control device 22 acquires the mass of the article W transported by the transport device 1 based on a weighing signal from the mass weighing unit 12b such as a load cell. Specifically, the control device 22 measures the total mass of the conveyance unit, the frame, the holding unit, the motor, and the like of the conveyance device 1 measured before conveyance of the article by the mass measurement unit 12b such as a load cell, and measures the measurement. The value is stored in the storage unit as a reference value. And at the time of article conveyance, control device 22 measures mass including article W currently conveyed and the above-mentioned conveyance part, a frame, a holding part, a motor, etc., and subtracts a reference value from the measured value, Calculated as the mass of the article W.

As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and there are design changes and the like without departing from the gist of the present invention. Is included in the present invention.
Further, the embodiments described in the above drawings can be combined with each other as long as there is no particular contradiction or problem in the purpose and configuration.
Moreover, the description content of each figure can become independent embodiment, respectively, and embodiment of this invention is not limited to one embodiment which combined each figure.

The holding unit is not limited to the above-described embodiment. For example, the weighing device illustrated in FIG. 6A includes a holding unit 35 that is in contact with the frame 1f of the transport unit 11 supported by the support unit 111 on the surface on the mass weighing unit 12b. The motor 31 is supported by the holding unit 35.
Further, as shown in FIG. 6 (b), the weighing device may have a holding portion 35C that holds the motor 31 by rotating it about 90 ° as compared with the example shown in FIG. 6 (a). Good.
Moreover, as shown in FIG.6 (c), the measuring device may have holding | maintenance part 35D which hold | maintains the motor 31 in the box-shaped part 112 on which the conveyance part 11 suspends.
In any of the above cases, the motor 31 can maintain substantially the same posture as when it is fixed even when the fixing tool is removed as long as it is held by the holding portion.

DESCRIPTION OF SYMBOLS 1 ... Conveyance apparatus 10 ... Conveyance part 11 ... Conveyance part 11a ... Belt conveyor 11f ... Frame 11s ... Lower surface 12b ... Mass measurement part 18 ... Fixed stand (base)
22 ... Control device (control unit)
31 ... Motor (drive motor)
31T ... Locking part 32 ... Drive belt 34 ... Fixing member (fixing tool)
35, 35A, 35B ... Holding part 35a ... Frame contact flat part 35b ... Motor receiving surface part 35h ... Fixing hole part 41 ... Adjusting part 100 ... Measuring device W ... Article

Claims (6)

A conveying device for conveying an article,
A motor,
A transport unit that is driven by the motor and transports articles;
A frame that supports the transport unit;
A holding part attached to the frame and holding the motor;
A fixing tool for fixing the holding portion and the motor;
The holding unit holds the motor on the surface side of the frame opposite to the surface on the conveyance unit side in a substantially same posture as when the fixing unit is fixed when the fixing unit is removed. Characteristic transport device. The holding portion is a frame contact flat portion that contacts the lower surface of the frame;
A motor receiving surface portion that extends from the frame abutting flat portion and is disposed at a position spaced apart from the lower surface of the frame by a predetermined distance;
The conveying device according to claim 1, wherein the motor receiving surface portion is configured to be able to hold a locking portion protruding in a horizontal direction from an upper end portion of the motor in a temporarily fixed state. A driving belt for transmitting the driving force of the motor to the transport unit;
The conveyance device according to claim 1, further comprising: an adjustment unit that adjusts an attachment position of the motor with respect to the holding unit so that the tension of the drive belt can be adjusted. The holding unit extends in a direction orthogonal to the conveyance direction by the conveyance unit,
The said motor is hold | maintained so that a movement in the extension direction is possible, The conveying apparatus of any one of Claims 1-3 characterized by the above-mentioned.   The said holding | maintenance part has a hole for fixing with which the said fixing tool is fitted, This hole for fixing is formed in the elongate hole in the adjustment direction by the said adjustment part. The conveying apparatus as described. A weighing device comprising the transport device according to any one of claims 1 to 5,
A weighing device comprising a mass weighing unit disposed between a fixed base and the frame of the transfer device.

Images