JP2010066014A - Weighing conveyor device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weighing conveyor device that facilitates replacing an endless belt. <P>SOLUTION: A pair of axial support members 16 axially supporting a drive roller 11 and a driven roller includes a means for reducing the gap between the drive roller 11 and the driven roller. The axial support member positioned at the side of a motor 30 is turnably supported by a support member 50 so that the other axial support member 16 decoupled from a support member 52 can be separated from the support members 50, 52. When detaching the endless belt, the gap between the drive roller 11 and the driven roller is reduced to decouple the axial support member 16 at the side opposite the motor from the support member 52. A conveyance part 10 is turned with the side of the motor 30 as a fulcrum, and the endless belt is drawn out. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a weighing conveyor device for weighing an object to be weighed, and particularly facilitates replacement of a conveyor belt.

The weighing conveyor device is arranged, for example, in the line of the conveyor, and measures the weight of the article in the process of sending the article sent from the upstream conveyor to the downstream side.
FIG. 14 shows a weighing conveyor device described in Patent Document 1 below.
As shown in FIG. 14A, the weighing conveyor device includes a transport mechanism 100 that transports an object 600, a drive source 200 for driving the transport mechanism 100, and a driving force of the drive source 200. A transmission mechanism 300 that transmits the weight, a support portion 700 that supports them, and a load detection portion 400 that detects weight.
The load detection unit 400 measures the weight of the (conveyance mechanism 100 + drive source 200 + transmission mechanism 300 + support unit 700 + object to be measured 600), and is a calculation unit (not shown) to which the measurement signal is sent (conveyance mechanism 100 + drive source). 200 + transmission mechanism 300 + support 700) is subtracted to calculate the weight of the object 600.

  Since the mechanical vibration component accompanying the movement of the object to be weighed is superimposed on the weighing signal sent from the load detection unit 400, the calculation unit removes unnecessary components included in the weighing signal with a filter and then performs the weighing. Calculate the weight of the object. The calculation of the weight in the calculation unit must be accurately performed within a short time during which the object to be weighed is being transported by the transport mechanism 100.

  As shown in FIG. 14B (side view), the transport mechanism 100 has a driving roller 103 that is rotated by the driving force of the driving source 200, a driven roller 104 that is driven, and a shaft that drives the driving roller 103 and the driven roller 104. A supporting side plate 106 and an endless belt 105 spanned between the driving roller 103 and the driven roller 104 are provided.

As shown in FIGS. 14B and 14C, the side plate 106 includes a side plate main body 108 that pivotally supports the driving roller 103 and a driven roller side plate 107 that pivotally supports the driven roller 104, and the driven roller side plate 107. Is attached to the side plate main body 108 so as to be rotatable about a shaft 109.
The driven roller side plate 107 is positioned on the extension line of the side plate body 108 so as to be aligned with the side plate body 108 in a state where the transport mechanism 100 is mounted on the support 700 (see FIG. 14B). Status). Therefore, the distance between the driven roller 104 and the drive roller 103 is maximized, and the endless belt 105 follows the rotation of the drive roller 103 without slack.

On the other hand, when exchanging the endless belt 105, the transport mechanism 100 is removed from the support portion 700, and the driven roller side plate 107 is bent 90 ° with respect to the side plate main body 108 as shown in FIG. In this way, since the endless belt 105 is loosened, the endless belt 105 can be pulled out and removed in the forward direction of the drawing.
JP 2002-13972 A

The endless belt of the weighing conveyor device is a consumable item that must be replaced every several months depending on the state of use. Therefore, improvements to facilitate the replacement of the endless belt are extremely important for the weighing conveyor device.
However, if the endless belt is replaced after the transport mechanism 100 is removed from the support unit 700 as in the above-described apparatus, it takes time and effort.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a weighing conveyor device that can be easily maintained such as replacement of an endless belt.

The present invention relates to a pair of a driving roller and a driven roller, a terminalless belt stretched between the driving roller and the driven roller, and a pair of shafts that pivotally support the driving roller and the driven roller with a distance therebetween. A weighing conveyor device having a shaft support member and a motor for driving the drive roller, wherein an object to be weighed is conveyed by the endless belt, and supporting the pair of shaft support members and the motor Each of the shaft support members has means for narrowing the distance between the drive roller and the driven roller kept during conveyance of the object to be measured, and is located on the motor side of the pair of shaft support members. One shaft support member is rotatably supported by the support member so that the other shaft support member released from the connection with the support member can be separated from the support member.
When removing the endless belt of this weighing conveyor device, loosen the endless belt by narrowing the distance between the driving roller and the driven roller, and then release the coupling between the shaft support member and the support member on the non-motor side. Then, the conveyance unit including the driving roller, the driven roller, the endless belt, and the shaft support member is rotated about the motor side shaft support member. If it carries out like this, the conveyance part can float the non-motor side from a support member, connecting the motor side, and can pull out an endless belt from the non-motor side of a conveyance part. At this time, the displacement of the motor-side transport unit serving as a pivot point of rotation is slight. Therefore, the connection between the motor and the transport unit can be maintained.

In the weighing conveyor device of the present invention, each of the shaft support members may be provided with driven roller moving means for linearly moving the driven roller in the direction of the driving roller.
By this driven roller moving means, the driven roller can be brought close to the driving roller, and the distance between the driving roller and the driven roller can be reduced.

In the weighing conveyor device according to the present invention, each of the shaft support members may be provided with driven roller rotating means for rotating the position of the driven roller around one point on the shaft support member.
The driven roller can be flipped up by the driven roller rotating means to narrow the distance between the driving roller and the driven roller.

In the weighing conveyor device of the present invention, the support member is coupled to the pair of first support members that support the pair of shaft support members, and the pair of first support members at a predetermined interval. A second support member, and a first support member that supports one of the shaft support members located on the motor side can be configured to be rotatably coupled to the second support member. .
In this configuration, the motor-side shaft support member of the transport unit and the motor-side first support member of the support member are coupled, and the first support member rotates relative to the second support member.

In the weighing conveyor device of the present invention, the first support member that supports one of the shaft support members positioned on the motor side can be configured to be coupled to the second support member with a hinge.
The first support member coupled to the second support member with a hinge can be rotated with respect to the second support member.

In the weighing conveyor device of the present invention, the rotation shafts of the driving roller and the driven roller and the rotation shaft of the motor are parallel to each other, and the rotation shaft of the motor is connected to the rotation shaft of the driving roller and the rotation shaft of the driven roller. It is desirable that the rotary shaft of the motor and the rotary shaft of the driving roller are located on a connecting line and are connected by a driving belt.
The drive belt connecting the motor and the drive roller arranged in this way does not hinder the rotation of the transport unit, and does not occur from the drive roller or the motor due to the rotation of the transport unit. In addition, the drive roller, driven roller, and motor are aligned in a straight line, thereby minimizing the vertical vibration of the drive roller due to the vibration of the motor and reducing the noise to the load detection unit that detects the displacement in the vertical direction. Can do.
In addition, the weighing conveyor device of the present invention can be configured as a multiple weighing device by arranging a plurality of weighing conveyor devices in the traveling direction of the conveyor.

  The weighing conveyor device of the present invention is easy to maintain and can replace the consumable endless belt with a simple operation.

An embodiment of a weighing conveyor device of the present invention will be described based on the drawings.
FIG. 1 is a perspective view (a) and a side view (b) of the weighing conveyor device, and FIG. 2 is an exploded perspective view thereof. FIG. 3 is a plan view (a) and a perspective view (b) of the transport unit. FIG. 4 is a diagram illustrating a shaft support member that supports the drive roller and the driven roller, and FIG. 5 is a diagram illustrating a shaft support structure of the shaft support member. FIG. 6 is an exploded perspective view of a support member that supports the transport unit, and FIG. 7 is a side view showing an attachment form of the motor to the support member. FIG. 8 is a side view showing the arrangement of the driving roller, the driven roller, and the motor. 9 is a side view showing the rotation of the transport unit, and FIG. 10 is a perspective view thereof. Moreover, FIG. 11 is a figure which shows the removal procedure of an endless belt, FIG. 12 is the side view seen from the motor side at that time, FIG. 13 is the state of the conveyance part when removing an endless belt FIG.

As shown in FIGS. 1 and 2, the weighing conveyor device includes a conveyance unit 10 that conveys an object to be measured, a motor 30 that is a driving source, a support member 50 that supports the conveyance unit 10 and the motor 30, and a motor. A driving belt 31 that transmits the driving force of 30 to the driving roller of the transport unit 10, two load detection units 40 that support these, and a base 60 that supports the load detection unit 40 are provided.
The base 60 is placed on a table with an appropriate height installed in the line of the conveyor.
The load detection unit 40 has a built-in load cell, the fixed side of the load cell is fixed to the base 60, and the movable side of the load cell supports the support member 50. Therefore, a load including the conveyance unit 10, the motor 30, the drive belt 31, the support member 50, and the object to be weighed is applied to the movable side of the load cell, and the movable side is deformed according to this load.
Each load cell outputs a weighing signal corresponding to the deformation on the movable side, and an arithmetic unit (not shown) synthesizes the weighing signals sent from the two load cells, and conveys the motor 10, the motor 30, the drive belt 31, and The weight of the object to be weighed is calculated by removing the load of the support member 50.

FIG. 3 shows the transport unit 10 in a state where it is detached from the support member 50.
The transport unit 10 includes a driving roller 11 that rotates with the driving force of the motor 30, a driven roller 12 that rotates with the driving roller 11, an endless belt 13 that spans the driving roller 11 and the driven roller 12, and In order to support the endless belt 13 carrying the object to be weighed from behind, the top plate 14 disposed in the ring of the endless belt 13, the shaft center 17 of the driving roller 11, and the shaft center 18 of the driven roller 12 are pivoted. The supporting members 15, 16 and the top plate 14 are interposed between the supporting members 15, 16 and the supporting member 15 and the top plate 14 and between the supporting member 16 and the top plate 14. And connecting members 19 and 20 for connecting the two.

The coupling members 19 and 20 are members having a substantially U-shaped cross section having an opening in the upper part of the figure, and one U-shaped side wall is fixed to the top plate 14 and the other side wall is a shaft support member 15 (or 16). ). The bottom walls of the coupling members 19 and 20 are screwed to first support members 51 and 52 (to be described later) of the support member 50.
The gap between the driven roller 12 and the top plate 14 is set wider than the gap between the drive roller 11 and the top plate 14. This is because the driven roller 12 can be moved closer to the driving roller 11 by a driven roller moving member 154 described later.

  The shaft support members 15 and 16 support the shaft center 17 of the driving roller 11 and the shaft center 18 of the driven roller 12 with a shaft support structure schematically shown in FIG. The shaft support member 15 and the shaft support member 16 have the same shape. As shown in FIG. 4, the drive roller 11 and the driven roller 12 are kept at a predetermined interval during conveyance, and the endless belt 13 is replaced. , Composed of a plurality of members for narrowing the interval. The driven roller rotating member 151 that holds the axis 18 of the driven roller 12 is fixed to the driven roller moving member 154 by a screw 153. However, if the connection of the screw 153 is released, the driven roller rotating member 151 is implanted in the driven roller moving member 154. The driven roller 12 can be flipped up by rotating around the shaft 152. Further, the bent portion 155 of the driven roller moving member 154 is fixed by the fixed bent portion 157 and the bolt / nut 156. However, if the connection between the bolt / nut 156 is released, the fixed bent portion 157 The driven roller 12 held by the driven roller rotating member 151 can be brought closer to the driving roller 11 by sliding in the direction.

  2 and 6, the support member 50 includes a first support member 51 coupled to the motor-side shaft support member 15 via the coupling member 19 (FIG. 3), and the coupling member 20 (FIG. 3). ), The first support member 52 coupled to the shaft support member 16 on the non-motor side, and the second support member 53 coupled to the first support member 51 and the first support member 52 at a predetermined interval. And a hinge 54 that rotatably couples the first support member 51 to an end surface of the second support member 53 on the motor side, and an end surface of the first support member 52 and the second support member 53 on the non-motor side. And a connecting plate 55. The hinge 54 and the connecting plate 55 are respectively coupled to the first support members 51 and 52 and the second support member 53 by screws.

  As shown in FIGS. 2 and 7, the motor 30 is fixed to a motor fixing plate 32 supported by a second support member 53 of the support member 50. As is clear from FIG. 8, the rotation shaft of the motor 30 parallel to the rotation shafts of the drive roller 11 and the driven roller 12 is located on a line connecting the rotation shaft of the drive roller 11 and the rotation shaft of the driven roller 12. .

As shown in FIG. 9, the transport unit 10 (FIG. 9A) supported by the support member 50 loosens the screw that is screwed to the bottom wall of the coupling member 19 (FIG. 3), and the non-motor side. If the coupling between the shaft support member 16 and the support member 50 is released, as shown in FIG. 9B, the motor side is left coupled and the anti-motor side is rotated in a direction to float from the support member 50. Can do. FIG. 10 shows a perspective view thereof.
At this time, on the motor side of the transport unit 10, the first support member 51 of the support member 50 fixed to the shaft support member 15 rotates with respect to the second support member 53 fixed by the hinge 54. At this time, the position of the motor 30 does not change.

Since the rotation of the conveyance unit 10 is a fulcrum of rotation on the motor side, the displacement of the conveyance unit 10 on the motor side is slight. For this reason, the drive belt 31 stretched between the drive roller 11 and the motor 30 of the transport unit 10 allows this small displacement. Further, there is no possibility that the drive belt 31 is loosened and detached from the drive roller 11 or the motor 30.
This contributes to a configuration in which the rotation shaft of the drive roller 11, the rotation shaft of the driven roller 12, and the rotation shaft of the motor 30 are aligned in a straight line. If the rotation axis of the motor is greatly displaced upward with respect to the line connecting the rotation axis of the drive roller 11 and the rotation axis of the driven roller 12, the drive belt is stretched when the conveyance unit 10 is rotated, and the drive The belt tension restricts the rotation of the transport unit 10. On the other hand, if the rotation axis of the motor is greatly deviated downward with respect to the line connecting the rotation axis of the drive roller 11 and the rotation axis of the driven roller 12, the drive belt is loosened when the transport unit 10 is rotated. There is a risk that the roller 11 or the motor 30 may be out of the proper mounting position.

Further, the configuration in which the rotation shaft of the drive roller 11, the rotation shaft of the driven roller 12, and the rotation shaft of the motor 30 are aligned in a straight line contributes to increasing the accuracy of the weighing conveyor device.
That is, since the load detection unit 40 detects the displacement in the vertical direction, the mechanical vibration (noise) in the vertical direction greatly affects the detection accuracy, but the drive roller 11, the driven roller 12, and the motor 30 are By arranging them in a straight line, the vibration in the vertical direction of the drive roller 11 accompanying the vibration of the motor 30 can be minimized.

Now, an operation for replacing the endless belt 13 will be described.
FIG. 11A shows a state before the operation.
First, the driven roller moving member 154 (FIG. 4) of the shaft support members 15 and 16 is set in a movable state, and the driven roller moving member 154 is slid in the direction of the driving roller 11. The state after the slide is shown in FIG. By this operation, the driven roller 12 approaches the driving roller 11 and the endless belt 13 is loosened.
Next, as shown in FIG. 12, the driven roller rotating member 151 is set in a rotatable state, and the driven roller rotating member 151 is rotated so that the driven roller 12 is placed on the top plate 14 (FIG. 2). . A state where the driven roller 12 is placed on the top plate 14 is shown in FIG.

Next, the coupling between the shaft support member 16 on the side opposite to the motor of the transport unit 10 and the support member 50 is released, the transport unit 10 is rotated about the motor side, and the side opposite the motor of the transport unit 10 is supported as a support member. Float from 50. This state is shown in FIG.
In this state, the endless belt 13 is pulled out to the non-motor side of the transport unit 10.
Further, when the endless belt 13 is attached to the transport unit 10, the reverse operation may be performed.

As described above, this weighing conveyor device can easily perform the replacement of the endless belt without removing the transport unit 10. Therefore, there is little possibility of damaging the mechanical parts adjacent to the transport unit 10 when replacing the endless belt.
In addition, since this weighing conveyor device has a motor attached on the line connecting the driving roller and the driven roller, unnecessary noise can be reduced and high-precision measurement is possible.
Also, the externally attached motor is easy to maintain.

Here, although the structure of the conveyance part 10 supported by the load detection part 40 was demonstrated, in each conveyance part of the multiple scale weighing apparatus which arranges a plurality of conveyance parts 10 supported by the load detection part 40 in the conveyor traveling direction, This belt exchange mechanism can also be used. In particular, in the multiple weighing apparatus, since a precise mechanism is arranged adjacent to the conveyor, this belt replacement mechanism that is less likely to damage adjacent mechanical components is extremely effective for the multiple weighing apparatus.
In addition, when an upstream transport unit that sends an object to be weighed to the transport unit 10 or a downstream transport unit that receives and transports an object to be weighed from the transport unit 10 is incorporated in a part of the weighing conveyor device, the upstream transport unit or the downstream transport unit The parts can be configured similarly.
Note that the structure and attachment means shown here are merely examples, and the present invention is not limited thereto.

  The weighing conveyor apparatus of the present invention can be widely used as an apparatus that is easy to maintain in a manufacturing site or a distribution site that handles various objects to be weighed, from small articles such as parts to large cargoes.

The perspective view (a) and side view (b) of the weighing conveyor apparatus which concern on embodiment of this invention 1 is an exploded perspective view of the weighing conveyor device of FIG. The top view (a) and perspective view (b) of the conveyance part in the weighing conveyor apparatus of FIG. The figure which shows the axial support member of the conveyance part of FIG. The figure explaining the support structure of the support member of FIG. The disassembled perspective view of the supporting member which supports the conveyance part of the weighing conveyor apparatus of FIG. The side view which shows the attachment form of the motor in the measurement conveyor apparatus of FIG. The figure which shows arrangement | positioning of the drive roller of the measurement conveyor apparatus of FIG. 1, a driven roller, and a motor. Side view (a) of the weighing conveyor device of FIG. The perspective view which shows the state which the conveyance part of FIG.9 (b) rotated. The figure which shows the removal procedure of an endless belt in the weighing conveyor apparatus of FIG. The side view which looked at the state of FIG.11 (c) from the motor side Side view showing the state of the transport section when removing the endless belt A diagram showing a conventional weighing conveyor device

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Conveyance part 11 Drive roller 12 Driven roller 13 Endless belt 14 Top plate 15 Shaft support member 16 Shaft support member 17 Shaft center 18 Shaft center 19 Coupling member 20 Coupling member 30 Motor 31 Drive belt 32 Motor fixing plate 40 Load detection part 50 Support member 51 First support member 52 First support member 53 Second support member 54 Hinge 55 Connecting plate 60 Base 100 Conveying mechanism 103 Drive roller 104 Drive roller 105 Endless belt 106 Side plate 107 Drive roller side plate 108 Side plate body 151 Drive roller Rotating member 152 Shaft 153 Screw 154 Driven roller moving member 155 Bending part 156 Bolt / nut 157 Fixed bending part 200 Drive source 300 Transmission mechanism 400 Load detection part 600 Object to be measured 700 Supporting part

Claims (7)

A pair of driving roller and driven roller; an endless belt stretched between the driving roller and driven roller; and a pair of shaft supporting members that pivotally support the driving roller and driven roller while maintaining a distance therebetween. A weighing conveyor device having a motor for driving the driving roller, and an object to be weighed is conveyed by the endless belt,
A support member for supporting the pair of shaft support members and the motor;
Each of the shaft support members has means for narrowing the interval between the driving roller and the driven roller that are maintained when the object to be weighed is conveyed,
One of the shaft support members positioned on the motor side of the pair of shaft support members can be pivoted to the support member so that the other shaft support member released from the support member can be separated from the support member. A weighing conveyor device, characterized in that it is supported by   2. The weighing conveyor apparatus according to claim 1, wherein each of the shaft support members includes driven roller moving means for linearly moving the driven roller in the direction of the driving roller. .   3. The weighing conveyor device according to claim 1, wherein each of the shaft support members has driven roller rotating means for rotating the position of the driven roller around one point on the shaft support member. Weighing conveyor device.   4. The weighing conveyor device according to claim 1, wherein the support member includes a pair of first support members that support each of the pair of shaft support members, and the pair of first support members. A first support member that supports one of the shaft support members located on the motor side, and is rotatably coupled to the second support member. A weighing conveyor device characterized by that.   5. The weighing conveyor device according to claim 4, wherein a first support member that supports one shaft support member located on the motor side is coupled to the second support member by a hinge. Conveyor device.   6. The weighing conveyor device according to claim 1, wherein the rotation shafts of the driving roller and the driven roller are parallel to the rotation shaft of the motor, and the rotation shaft of the motor is the rotation of the driving roller. A weighing conveyor device, which is located on a line connecting a shaft and a rotation shaft of the driven roller, wherein the rotation shaft of the motor and the rotation shaft of the drive roller are connected by a drive belt.   A multi-scale weighing device in which a plurality of the weighing conveyor devices according to any one of claims 1 to 6 are arranged in a moving direction of the conveyor.