JPH0933324A - Conveying equipment with weight measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conveying equipment with a weight measuring device by which a lightweight conveyed thing can be measured with high accuracy. SOLUTION: In the conveying equipment having a conveying means 13 which moves a conveyed thing 16 in the transverse direction in a state that the same is mounted on a conveying face 12a, an opening portion which opens in the vertical direction always at the same position is provide in the conveying means 13, and a base portion 23, which protrudes and retreats from the conveying face 13 of the conveying means 13 through the opening portion by relative movement against the conveying means 13, and a weight measuring device 19, which has a measuring means 24 measuring the weight change of the base potion 23, that is, the weight of the conveyed thing 16 on the base portion 23, are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carrying device with a weight measuring device capable of carrying a product and measuring the weight of the product while the product is being carried.

[0002]

2. Description of the Related Art As a transfer device with a weight measuring device capable of measuring the weight of a transferred product while transporting the transferred product, for example, a conveyor for moving the transferred product in a lateral direction while being placed on a transfer surface. The conveyor of the predetermined section of the above is attached to the measuring means, and when the conveyed article passes through the predetermined section, the weight of the conveyed article is measured together with the weight of the conveyor in the predetermined section, and the weight of the conveyor itself is different. By pulling, the weight of the transported object is indexed.

[0003]

However, since the transport device with the weight measuring device also measures the weight of a heavy conveyor, the weight measuring range (for example,
The resolution is wide in 0.1 kg units and the like, and it is difficult to accurately measure the weight of a light conveyed product (for example, 0.5 kg). Moreover, since the conveyor is operating during the measurement, the measurement is not stable due to the vibration from the conveyor and the like. Moreover, when measuring objects such as plastic containers having a relatively large volume relative to weight, the measurement becomes unstable under the influence of the air flow generated when these conveyed objects to be measured move. For this reason, there is a case where the weight is taken out from the conveyor, that is, the weight is measured off-line, but it is difficult to measure the total weight, and the burden on the operator increases.

Therefore, an object of the present invention is to provide a carrying device with a weight measuring device, which is capable of accurately measuring a lightly carried object on the carrying means.

[0005]

In order to achieve the above object, a carrying device with a weight measuring device according to the present invention has a carrying means for laterally moving a carried object in a state of being placed on the carrying surface. In the device, the transport means is provided with an opening that is always open at the same position in the vertical direction, and a base portion that projects and retracts from the transport surface of the transport means through the opening by relative movement with respect to the transport means, It is characterized by comprising a weight measuring device having a measuring means for measuring the change in weight of the platform. Then, when the platform is projected from the transport surface by the relative movement with respect to the transport means and the transported product is placed on the platform, the transported product is separated from the transport surface, and the weight change of the platform at this time, that is, the platform. The weight of the conveyed article on the set is measured by the measuring means.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a carrying device with a weight measuring device of the present invention will be described below with reference to the drawings.

A transporting device with a weight measuring device (hereinafter referred to as a transporting device) is wound around a pair of rollers 11 and 11 arranged in parallel with each other with a predetermined distance therebetween. A plurality of (four) conveyor belts 12 and 1 are arranged in parallel with each other with a predetermined distance therebetween.
2 has a conveyor 13 as a transporting means. All the conveyor belts 12, 12, ...
2a, 12a, ... Are located in substantially the same horizontal plane, and are rotated at the same speed by the driving force of the transport driving device 15 controlled by the controller 10 so that the upper surface 12a,
The transported object 16 is moved horizontally by 12a, ....

The conveyor 13 is vertically moved between an ascending limit position and a descending limit position by a lifting drive device 17 controlled by the controller 10 while maintaining a horizontal state. Here, the conveyor 13 has the upper surfaces 12a, 12a, ... Further, the gaps between the respective conveyor belts 12, 12, ... Are always openings 18, 18, 18 which are open at the same position in the vertical direction.

Although not shown in the figure, a large number of other conveyors are arranged on the front and rear sides of the conveyor 13 in the conveying direction to form a conveying device.
The conveyor 13 at the ascending limit position is provided with its upper surface vertically aligned.

Below the conveyor 13, a weight measuring device 19 is provided.
Is provided. This weight measuring device 19 has a plurality of placements each having a rectangular shape in a plan view, in which the upper surfaces are arranged in the same horizontal plane in the openings 18, 18, 18 between the conveyor belts 12, 12 ,. A base 23 having a plurality of columns 21, 22, 21 and a plurality of pillars 22, 22, 22 vertically extending and supporting a corresponding one of the mounting portions 21, 21, 21 at the upper end, and this base 23. It has a measuring device main body 24 as a measuring means for supporting the portion 23 in the above-mentioned arrangement state. In addition,
When the conveyor 13 is at the ascending limit position, the platform part 23 is retracted so as to retract to the lower side of the upper surfaces 12a, 12a, ..., When the conveyor 13 is at the descending limit position, all the mounting parts 21, 21, 21 are removed. The upper surfaces 12a, 12a, ... Then, the measuring device main body 24 is
Is measured, that is, the weight of the conveyed product 16 is measured. Here, the measuring device main body 24 detects a weight change, for example, by subtracting a predetermined weight of the platform 23 from the total weight including the platform 23 input via the platform 23.

The conveyor 13 has upper surfaces 12a, 1
A sensor 26 that detects a conveyed object 16 moving on the 2a, ... And outputs a detection signal is provided.
When the output of the detection signal is received from the sensor 26, the conveyance drive device 15 is moved at a timing at which the conveyance object 16 detected by the sensor 26 is aligned with the base portion 23 in the conveyance direction.
Of the conveyor 13 by means of the conveyor belts 12, 1
Stop the rotation of 2, ... In addition, the transport driving device 15
At a timing after the conveyor belts 12, 12, ... Are stopped by the controller 10, the controller 10 lowers the conveyor 13 by the elevating and lowering drive device 17 to project the table portion 23 from the conveyor 13 so that the article 16 is transferred onto the table portion 23. Place it.

Further, the measuring device main body 24 stores the weight data of the conveyed product 16 measured by the measuring device main body 24, the quality judgment result data of the weight of the conveyed product 16 by comparing the weight data with the master data, and the like. A display unit 27 for displaying at least one data is connected.

According to the carrying device having such a structure, as shown in FIG.
As shown in FIG.
6 is detected by the sensor 26, the controller 10
However, at the timing when the position of the conveyed object 16 detected by the sensor 26 in the conveying direction is aligned with the base portion 23 as shown in FIG.
The rotation of 12, ... Is stopped. And the controller 1
0 lowers the conveyor 13 by the lifting drive device 17 as shown in FIG.
Is projected from the upper surfaces 12a, 12a, 12a of the conveyor 13 through the openings 18, 18, 18 to place the conveyed article 16 on the placing sections 21, 21, 21. Then, in the measuring device main body 24, the lifting drive device 17 moves the conveyor 13
The weight change of the platform 23, that is, the weight of the conveyed article 16 placed on the platform 23 is measured and displayed at least at the timing when the platform 21 is lowered to a position protruding from the upper surfaces 12a, 12a, .... In addition to displaying the result on the section 27, the quality of the conveyed article 16 is determined and the result of the determination is displayed on the display section 2.
7 is displayed. Then, when the weight input by the measuring device main body 24 via the stand portion 23 is finished, the controller 10 raises the conveyor 13 to the raising limit position by the raising / lowering drive device 17 as shown in FIG. As shown in FIG. 6, the conveyor driving device 15 restarts driving of the conveyor 13.

According to the above conveying apparatus, the opening portions 18, 18, 1 which are opened in the vertical direction at the same position of the conveyor 13 are always provided.
The mounting portions 21, 21, 21 of the base portion 23 provided in
By lowering the conveyor 13, the upper surfaces 12a, 12a, ...
From the mounting portion 21, 21, 21 of the base portion 23
The transported article 16 is placed on top. As a result, the transported object 16
Is separated from the upper surfaces 12a, 12a, ... Of the conveyor 13, and the measuring device main body 24 causes the base portion 23 at this time.
Change in weight, that is, the weight of the conveyed article 16 on the platform 23 is measured. Therefore, since the weight of the conveyor 13 is not also measured together, it is possible to accurately measure the weight of the conveyed article 16 with a resolution that matches the weight of the conveyed article 16 (for example, 140).
It is possible to measure a transported object of g with an accuracy of ± 0.5 g at 4-second intervals). Further, since the measurement is performed in a state of being separated from the conveyer 13, there is no influence of vibration from the conveyer 13 or wind or the like received by the conveyed product 16 and the measurement result is stable. Furthermore, it is possible to measure all of them without human intervention.

In the above, since the conveyor 13 is stopped at the time of measuring the weight, if the conveying interval of the conveyed articles 16 by the conveyor on the upstream side is set to be wider than the shortest interval for measuring the weight, the entire conveying device can be obtained. It is possible to avoid the suspension of.

Further, in the above, the base 23 is fixed in position, and the conveyor 13 is moved up and down to move the base 23.
The description has been made by taking the case where the upper and lower surfaces 12a, 12a, ... Of the conveyor 13 are projected and retracted as an example.
By raising and lowering the base 23 with the position 3 fixed,
It is also possible to project / retract the base portion 23 from the upper surfaces 12a, 12a, ... Of the conveyor 13. In this case, there is an advantage that the system configuration can be simplified as compared with the case where the conveyor 13 is moved up and down.

[0017]

As described above in detail, according to the carrying device with a weight measuring device of the present invention, the table portion is projected from the carrying surface by the relative movement with respect to the carrying means, and the article is placed on the table portion. When placed, the transported object is separated from the transport surface, and the weight change of the platform in this state, that is, the weight of the transported article on the platform is measured by the measuring means. Therefore, since the weight of the transport means is not measured together, it is possible to accurately measure the weight of the transported object with a resolution that matches the weight of the transported object. Further, since the object to be measured is not affected by the vibration from the carrying means and the measurement is performed while the object to be measured is separated from the carrying means and the carrying is stopped, a measured object such as a plastic container having a volume larger than the weight can be measured. Accurate weighing is possible without being affected by the air flow. Furthermore, it is possible to measure all of them without human intervention.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a state of an embodiment of a carrying device with a weight measuring device of the present invention.

FIG. 2 is a schematic plan view showing an embodiment of a carrying device with a weight measuring device of the present invention.

FIG. 3 is a schematic side view showing a state after the embodiment of the carrying device with the weight measuring device according to the present invention, which is after FIG. 1.

FIG. 4 is a schematic side view showing a state after the embodiment of the carrying device with a weight measuring device according to the present invention, which is shown in FIG. 3;

FIG. 5 is a schematic side view showing a state after the embodiment of the carrying device with a weight measuring device according to the present invention, which is shown in FIG. 4;

FIG. 6 is a schematic side view showing a state after the embodiment of the carrying device with the weight measuring device according to the present invention, which is shown in FIG. 5;

[Explanation of symbols]

 12a Upper surface (conveying surface) 13 Conveyor 16 Conveyed object 18 Opening 19 Weight measuring device 23 Stand 24 Measuring device main body (measuring means)

Claims (1)

[Claims] 1. A transfer device having a transfer means for moving a transferred object laterally while being placed on a transfer surface, wherein the transfer means is provided with an opening that is always open at the same position in the vertical direction, A weight measuring device is provided, which has a base portion that projects and retracts from the transport surface of the transport means through the opening by relative movement with respect to the transport means, and a measuring means that measures a weight change of the base portion. A transport device with a weight measuring device, which is characterized in that