JPH0326430Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a windshield device for obtaining stable weight values without being affected by outside air when automatically weighing powder samples. By using a robot hand, automatic weighing can be performed without the need for human labor.

[Conventional technology]

Traditionally, for example, when conducting industrial analysis of coal,
As shown in FIG. 3, a container 2 containing a powder sample was manually weighed by placing it on a top balance 1.

[Problem that the invention attempts to solve]

However, such conventional weighing requires manual labor,
Also, since it requires training, there are individual differences. Furthermore, there were problems in that the balance was not stable due to the influence of outside air, especially air movement, and that even if a windshield device was installed around the balance and the door was opened and closed by a general-purpose robot, the work efficiency was poor.

In view of the above points, the present invention aims to provide an automatic windshield device for a robot hand balance that can automate weighing using a balance, which is the most important part of industrial analysis of coal, without being affected by outside air. purpose.

[Means for solving problems]

The automatic windshield device for a robot hand balance according to the present invention includes a windshield cover provided around an upper balance,
A ceiling door is installed to cover the upper part of the windshield cover and opens and closes in the horizontal direction in contact with it, and a robot hand that carries sample containers into and out of the upper balance balance enters the vicinity of the upper balance balance position and near the position. The ceiling door is equipped with a robot hand position detector that detects exit from the robot hand, and an automatic opening/closing device that automatically opens and closes the ceiling door based on the detection result of the robot hand position detector.

[Effect]

The automatic windshield device of the present invention having the above-mentioned configuration is such that the powder sample to be placed in the container is powder of 60 mesh or less as in the case of industrial analysis of coal, and the container is a weighing bottle, a porcelain crucible, When using a porcelain plate, etc., and the sample weight is as small as 1 g,
After weighing, the container is placed in an electric furnace and reweighed to determine the change in sample weight after each heat treatment for moisture content, volatile content, ash content, sulfur content, etc. During weighing, weighing is always performed inside the windshield device, and the ceiling door is opened and closed by a general-purpose robot hand, so that stable weighing can be performed efficiently.

[Example of idea]

Next, one embodiment of the present invention will be described based on the drawings. FIG. 1 is a plan view showing the entire automatic windshield device of the present invention, and FIG. 2 is a partial side view when a general-purpose robot hand grips a sample container.

1 is a top balance, 2 is a sample container, and 3
2 is a circular table, and 4 is a hand of a general-purpose robot. As shown in FIG. It is something to do.

Reference numeral 5 denotes a windshield cover, which is provided so as to surround the upper balance 1 . Reference numeral 6 denotes a ceiling door which is in contact with and covers the upper part of the windshield cover 5 and can be opened and closed in the horizontal direction. 7 is a motor, 8, 8' is a pulley, 8'' is a string, 9, 9' is a robot hand position detector, that is, a limit switch,
Reference numeral 10 denotes a ceiling door support arm, which forms an automatic opening/closing device for opening and closing the ceiling door 6. 11 is a traveling rail for the ceiling door 6, and 12 is a rear cover.

The limit switches 9, 9' are linked to the operation of the hand 4 of the general-purpose robot, and the limit switches 9, 9'
The ceiling door 6 opens when the hand 4 holding the container 2 moves forward to the vicinity of the upper balance 1 , and closes when the hand 4 grasps the container 2 on the upper balance 1 and retreats after weighing is completed. It is important to keep it as is.

The automatic opening/closing device is not necessarily limited to this embodiment, and may include other gears or the like.

[Effect of idea]

When the automatic windshield device of the present invention is used, for example, in industrial analysis of coal, the container is a weighing bottle, a porcelain crucible, a porcelain plate, etc., and the sample weight is as small as 1 g. After weighing, the container is placed in an electric furnace and weighed to determine the change in sample weight after each heat treatment for moisture content, volatile content, ash content, sulfur content, etc. Stable weighing is performed with high precision, and weighing efficiency, which is the most important factor in analysis, is significantly improved.

[Brief explanation of drawings]

1 and 2 show an embodiment of the automatic windshield device of the present invention, FIG. 1 is a plan view of the entire device, and FIG. 2 is a side view when a container is gripped by the hand of a general-purpose robot. FIG. 3 is a plan view showing conventional manual weighing. The code 1 in the figure is a top balance, 2 is a sample container, and 3
is a circular stand, 4 is a robot hand, 5 is a windshield cover, 6 is a ceiling door, 7 is a motor, 8 and 8' are pulleys,
8″ is a string, 9 and 9′ are limit switches, 10 is a ceiling door support arm, 11 is a ceiling door running rail, 12
is the rear cover.

Claims (1)

[Scope of utility model registration request] A windshield cover provided around the upper balance, a ceiling door that is installed to cover the upper part of the windshield cover and opens and closes horizontally in contact with it, and a robot hand that carries sample containers into and out of the upper balance. A robot hand position detector that detects entry into and exit from the vicinity of the upper balance balance position, and an automatic opening/closing device that automatically opens and closes the ceiling door based on the detection results of the robot hand position detector. An automatic windshield device for a robot hand balance, comprising: