JP6864901B2 - Conveyor device, weighing device - Google Patents

Description

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

Logistics centers that handle deliverables have limited installation space for transport devices that transport goods (deliverables). Patent Document 1 describes a small transfer device provided with a drive motor on the lower side of the transfer conveyor.

Japanese Unexamined Patent Publication No. 6-43010

By the way, in many cases, the distribution center operates 24 hours a day, 365 days a year, and if there is a failure in the transport device, quick recovery is required. However, in the transfer device described in Patent Document 1, since the drive motor arranged under the transfer conveyor is large and heavy, maintenance work such as replacement of the motor requires a lot of time and manpower. For example, at the installation location of the transport device, at least two workers are required to hold the motor weighing 10 kg or more and remove or install the fixing bolts of the motor held by other workers. Met.

The present invention has been made in view of the above points, and provides a transport device having a simple structure, which is suspended from a frame supporting a transport portion and has a simple structure in which a drive motor can be easily attached and detached. The purpose is. Another object of the present invention is to provide a weighing device provided with the above-mentioned transport device.

The transport device of the present invention has at least the following configurations.
A transport device that transports goods
With the motor
A transport unit driven by the motor to transport articles,
A drive belt that transmits the driving force of the motor to the transport unit, and
A frame that supports the transport unit and
A holding portion attached to the frame and holding the motor,
Fixtures for fixing the holding portion and the motor ,
An adjusting unit for adjusting the mounting position of the motor with respect to the holding unit is provided so that the tension of the drive belt can be adjusted.
The holding portion has a motor receiving surface portion arranged at a position below the lower surface of the frame by a predetermined distance, and when the fixture is removed, the holding portion has a surface on the transport portion side of the frame. A direction orthogonal to the rotation axis direction of the motor, with the motor receiving the motor receiving surface in substantially the same posture as when the motor is fixed by the fixture on the opposite surface side, while the locking portion for fixing the motor is temporarily fixed. Holds slidably,
The adjusting portion is provided on the holding portion so as to be movable in a direction orthogonal to the rotation axis direction of the motor in a temporarily fixed state, and the motor is orthogonal to the rotation axis direction of the motor by pressing against the locking portion. wherein the movable der Rukoto direction.

Further, the weighing device of the present invention includes the above-mentioned transport device according to the present invention, is arranged between the fixed base and the frame of the transport device, and has a mass weighing unit for measuring the mass of the article transported by the transport device. It is characterized by that.

According to the present invention, it is possible to provide a transport device having a simple structure in which a drive motor suspended from a frame supporting a transport portion can be easily attached to and detached.
Further, according to the present invention, it is possible to provide a weighing device provided with the above-mentioned transport device.

The whole conceptual diagram which shows an example of the weighing apparatus which adopted the transfer apparatus which concerns on embodiment of this invention. Top view of the weighing device shown in FIG. The figure for demonstrating the article size measuring part of the measuring apparatus, (a) is the front view of the gate, and (b) is the side view of the gate. FIG. 5 is a side conceptual diagram for explaining the transport device according to the embodiment of the present invention. A view for explaining the transport device, (a) is a perspective view of the motor and the holding portion, and (b) is a bottom view of the holding portion. A diagram for explaining a weighing device according to an embodiment of the present invention, (a) is a diagram for explaining a weighing device having a holding portion that is provided on the mass measuring section and is in surface contact with a transport section. (B) is a diagram for explaining a weighing device having a holding portion that rotates and holds the motor by about 90 ° as compared with the example shown in (a), and (c) is a box in which the transport portion is suspended. The figure for demonstrating the weighing device which has the holding part which holds a motor inside.

The transport device according to the embodiment of the present invention is a transport device that transports articles. The transport device fixes a motor, a transport unit driven by the motor to transport articles, a frame that supports the transport unit, a holding unit that is attached to the frame and holds the motor, and the holding unit and the motor. When the fixture is removed, the holding unit holds the motor on the side of the frame opposite to the surface on the transporting unit side in substantially the same posture as when the motor is fixed by the fixture. To do.

Hereinafter, the transport device according to the embodiment of the present invention will be described with reference to the drawings. Embodiments of the present invention include, but are not limited to, the contents shown in the illustration. In the following description of each figure, parts common to the parts already described are designated by the same reference numerals, and some duplicate explanations will be 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 the present embodiment, the weighing device 100 includes the transport device 1, the mass measuring unit 12b for measuring the mass of the article W, and the length (length) and width (length) and width of the article W. It has an article size measuring unit 60 for measuring a size such as a horizontal shape and a height, a control device 22 (control unit), and the like.
The transport device 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 for detecting the article W are arranged along the belt conveyor 10a and the belt conveyor 11a constituting the conveying device at predetermined intervals, and detect the passage of the article in the process of conveying.

A side end detection unit 6 as an article size measuring unit 60 is arranged between the belt conveyor 10a and the belt conveyor 11a. The side end detection unit 6 includes a pair of light emitting units 6a and a light receiving unit 6b, and a plurality of side end detection units 6 are arranged across a transport path to detect both side ends of an article being transported at a predetermined position. Specifically, the side end detection unit 6 disposes a large number of light emitting portions 6a along the longitudinal direction on the horizontal side portion 19a of the gate-shaped frame 19 straddling the transport path of the article at regular intervals, and the horizontal side portions thereof. It has a structure in which a light receiving portion 6b is arranged to face each other below the transport path facing 19a. In the side end detection unit 6, the light receiving unit 6b may be arranged on the horizontal side portion 19a of the portal frame 19, and the light emitting unit 6a may be provided below the transport 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 gate-shaped frame 19 is provided with a plurality of light emitting units 21a and light receiving units 21b of the detection unit 21. Specifically, a large number of light emitting portions 21a are arranged side by side at regular intervals from a position near the transport surface (lower part) toward the horizontal side portion 19a on one of the facing surfaces of the vertical side portions 19b and 19c of the gate-shaped frame 19, and are opposed to each other. The light receiving portion 21b is arranged to face each other on the facing 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 respect to the transport surface) based on the signal from the light receiving unit 21b and the position of the light receiving unit 21b.

Further, the control device 22 determines, for example, the speed of the article W conveyed by the belt conveyor, the detection signal from the light receiving unit 6b and the light receiving unit 21b, 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 measuring device 100 is not limited to the above embodiment as long as it can measure the length (length), width (horizontal), height, and the like of the article W. It may be configured to measure using a measuring device.

The mass measuring unit 12b of the measuring 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 portion 11 is arranged on the large support frame 12a by the columns 11b. Mass measuring portions 12b are arranged at the lower portions of substantially four corners of the support frame 12a. The mass measuring unit 12b is placed on a fixed base 18 (base) whose upper surface is maintained horizontally so that the mass of all the articles W placed on the transporting unit 10 and the transporting 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 measuring unit 12b.

As shown in FIG. 4, the transport device 1 according to the embodiment of the present invention supports a transport unit 11 including a belt conveyor 11a for transporting an article W, a motor 31 for driving the transport unit 11, and a transport unit 11. The frame 11f is provided with a holding portion 35 for suspending and holding the motor 31 on the opposite surface (lower surface 11s) of the frame 11f on the transport portion side in a temporarily fixed state. Specifically, the belt conveyor 11a has a rotating shaft 11ra, a rotating shaft 11rb, and an endless belt 11c. The endless belt 11c is bridged 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 the frame contact flat portion 35a, and is arranged at a position that is separated from the lower surface 11s of the frame 11f by a predetermined distance. It has a motor receiving surface portion 35b and the like. The holding portion 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 a 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 fixed members such as bolts. It is fixed by 39.
In the present embodiment, the holding portion 35 has two holding portions 35A and 35B, and is arranged so that the motor receiving surface portions 35b face each other on the lower surface 11s of the frame 11f.

Further, the transfer device 1 according to the embodiment of the present invention has a drive belt 32 that transmits the driving force of the motor 31 to the belt conveyor 11a of the transfer unit 11. Specifically, the drive belt 32 is bridged between a motor pulley 31p provided on the motor 31 and a roller pulley 11p provided on the rotating shaft 11ra of the belt conveyor 11a. Further, the transport device 1 has an adjusting unit 41 that adjusts the mounting 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 adjusting portion 41 is a bolt provided on the holding portion 35 so as to be movable in a direction orthogonal to the rotation axis direction of the motor 31, and the tip portion of the bolt presses the locking portion 31T of the motor 31. As a result, the mounting position of the motor 31 with respect to the holding portion 35 can be easily adjusted.

Further, as shown in FIG. 5, the holding portion 35 extends in a direction orthogonal to the transport direction by the transport unit 11. The motor 31 is held in a temporarily fixed state so as to be movable in its extending direction (direction orthogonal to the transport direction by the transport portion). The motor 31 is slidably configured along the extending direction of the holding portion 35. It is preferable that a smooth surface having a small frictional resistance is 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, at the time of 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 mounted on the frame 11f by sliding in the opposite direction.

Further, the transport device includes a fixing member 34 (fixing tool) such as a bolt for fixing the motor 31 and the holding portion 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 portion 35h is formed as an elongated hole in the adjustment direction by the adjusting portion 41.
That is, with the fixing member 34 such as a bolt fitted in the fixing hole portion 35h, the adjusting portion 41 adjusts the positional relationship between the motor 31 and the holding portion 35 along the elongated hole of the fixing hole portion 35h. By doing so, 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, the 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 at the time of motor replacement, and the motor 31 is fixed to the holding portion 35 by the fixing member 34.

Remove various wires. Specifically, the encoder wire (not shown) is removed from the encoder 51, and the 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 that fixes the locking portion 31T and the holding portion 35 of the motor 31 is loosened.
Then, the adjusting screw (adjusting portion 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 35h of the holding portion 35.

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

If the failed motor 31 can be repaired in a short time, the repair is performed to obtain a normal motor 31. If the motor cannot be repaired in a short time, a normal motor 31 prepared in advance is attached to the transfer device 1. Hereinafter, an example of the procedure for attaching the normal motor 31 to the transfer device 1 will be described.

Specifically, the normal motor 31 is slid and incorporated 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 adjusting screw (adjusting portion 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, the encoder 51 and the 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 a transport unit 11 including a belt conveyor 11a for transporting articles, a motor 31 for driving the transport unit 11, and a frame for supporting the transport unit 11. It has 11f, a holding portion 35 attached to the frame 11f and holding the motor 31, and a fixture (fixing member 34) for fixing the holding portion 35 and the motor 31. When the fixing tool (fixing member 34) is removed, the holding portion 35 fixes the motor 31 on the surface opposite to the surface on the transporting portion side in the frame 11f with the fixing tool (fixing member 34). Hold in the same position. Specifically, the holding portion 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 transport portion side.
That is, in the transport device 1, even when the fixing screw for fixing the holding portion 35 and the motor 31 is removed, the motor 31 is temporarily fixed by the holding portion 35 (when fixed by the fixing tool (fixing member 34)). Suspended and held in the same posture). That is, in order to move the motor 31 toward the front side of the frame 11f without dropping it 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 on the frame, the motor can be easily replaced by a small number of people.

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

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and there are design changes and the like within a range that does not deviate from the gist of the present invention. Even included in the present invention.
Further, the embodiments shown in the above figures can be combined with each other as long as there is no particular contradiction or problem in the purpose and configuration thereof.
Further, the description contents of each figure can be independent embodiments, and the embodiment of the present invention is not limited to one embodiment in which each figure is combined.

The holding portion is not limited to the above-described embodiment. For example, the weighing device shown in FIG. 6A has a holding portion 35 on the mass measuring portion 12b that is in surface contact with the frame 1f of the transport portion 11 supported by the support portion 111. The motor 31 is supported by the holding portion 35.
Further, as shown in FIG. 6B, even if the weighing device has a holding portion 35C for rotating and holding the motor 31 by about 90 ° as compared with the example shown in FIG. 6A. Good.
Further, as shown in FIG. 6C, the weighing device may have a holding portion 35D for holding the motor 31 in the box-shaped portion 112 on which the conveying portion 11 is suspended.
In any of the above cases, if the motor 31 is held by the holding portion, the motor 31 can maintain substantially the same posture as when it is fixed even when the fixture is removed.

1 ... Conveyor device 10 ... Conveyor unit 11 ... Conveyor unit 11a ... Belt conveyor 11f ... Frame 11s ... Bottom surface 12b ... Mass measuring unit 18 ... Fixed base (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 ... Weighing device W ... Article

Claims (6)

A transport device that transports goods
With the motor
A transport unit driven by the motor to transport articles,
A drive belt that transmits the driving force of the motor to the transport unit, and
A frame that supports the transport unit and
A holding portion attached to the frame and holding the motor,
Fixtures for fixing the holding portion and the motor ,
An adjusting unit for adjusting the mounting position of the motor with respect to the holding unit is provided so that the tension of the drive belt can be adjusted.
The holding portion has a motor receiving surface portion arranged at a position below the lower surface of the frame by a predetermined distance, and when the fixture is removed, the holding portion has a surface on the transport portion side of the frame. A direction orthogonal to the rotation axis direction of the motor, with the motor receiving the motor receiving surface in substantially the same posture as when the motor is fixed by the fixture on the opposite surface side, while the locking portion for fixing the motor is temporarily fixed. Holds slidably,
The adjusting portion is provided on the holding portion so as to be movable in a direction orthogonal to the rotation axis direction of the motor in a temporarily fixed state, and the motor is orthogonal to the rotation axis direction of the motor by pressing against the locking portion. transport and wherein the Ru movable der direction. The holding portion has a frame contact flat portion that contacts the lower surface of the frame.
The motor receiving surface portion extends from the frame contact flat portion and is arranged at a position separated from the lower surface of the frame by a predetermined distance, and the locking portion of a rectangular flat plate for fixing the motor. The transport device according to claim 1, wherein the transport device is configured to be able to be held in a temporarily fixed state. The adjusting part is a bolt.
The transport device according to claim 1 or 2 , wherein the locking portion is pressed by the tip end portion of the bolt provided in the holding portion so as to be movable in a direction orthogonal to the rotation axis direction of the motor. The holding portion extends in a direction orthogonal to the transport direction by the transport portion.
The motor, the transport device according to any one of claims 1 or et 3, characterized in that it is slidably held along the extending direction of the holding portion. The holding portion from claim 1, wherein the fastener has a fixed hole portion to be fitted, characterized in that said fixing hole is formed in the elongated hole in the adjusting direction by the adjustment unit The transport device according to any one of 4. A weighing device including the transport device according to any one of claims 1 to 5.
A weighing device having a mass measuring unit arranged between a fixed base and the frame of the transporting device.

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