JPH0330836Y2 - - Google Patents

Description

[Detailed description of the invention] This invention automatically adds or removes several weights of the same weight one after the other when inspecting a measuring instrument (hereinafter referred to as a scale) or adjusting the manufacturing process. , relates to a weight used in an inspection device that determines the pass/fail of a scale scale line (finger scale).

In the above inspection work, four weights of the same weight are added and subtracted, and a pass/fail judgment is made at the quarter points of the scale of a circular scale plate. Therefore, four dedicated weights are required for each model with a different weighing capacity, which is uneconomical.

In view of the above points, the present invention aims to omit dedicated weights for each model by configuring a divided weight block that can be used for several types of scales with different weighing capacities.

As a means for this, four weights each having a weight of 1/4 of the minimum weight are made among several types of scales with different weights, and these are used as the basic weight W1. The basic weight is formed in a concave shape.

For weighing the next weighing larger than the minimum weight mentioned above, prepare four auxiliary weights with a weight equal to 1/4 of the difference in weight between the two scales, and place the auxiliary weights in the concave chamber of each basic weight. The weight block is constructed by storing the weight so as not to protrude from the upper surface of the recessed chamber.

Furthermore, for the weighing of the next higher weight, an auxiliary weight with a weight equal to 1/4 of the difference in weight between the weight and the minimum weight is stored in each basic weight.

In this way, set the auxiliary weights for each scale with a different weighing capacity.

The weight of each of these auxiliary weights can be obtained by combining four auxiliary weights each with different weights, and the auxiliary weights obtained by the combination are stored in the concave chamber of the basic weight. This is a weight block configured to

The embodiments shown in the drawings will be described in detail below. The weight of the scale to be applied now is 8, 10, 12, 15,
20.30 (unit: kg), the basic weight is 2 kg weight W1, which is 1/4 of the minimum weighing weight of 8 kg.

By hanging the four basic weights W1 of 2 kg as shown below and adding or subtracting one of them, 2, 4, 6,
It is possible to judge 4 points of 8 (Kg).

If a 10Kg scale is used as the minimum weighing scale, then 1/4 of that.
is 2.5Kg, but if there is a fraction after the decimal point in the basic weight, it will be difficult to configure the auxiliary weight, so 2Kg
Let the weight be the basic weight.

Next, for a 10Kg scale, store the 0.5Kg auxiliary weight W5, which is 1/4 of the 2Kg difference from the minimum weighing 8Kg scale, into the 2Kg basic weight W1 (Fig. 5A), and add the 2.5Kg weight block. Construct four pieces and judge each point of 2.5, 5, 7.5, and 10Kg.

Similarly, for a 12Kg scale, the difference from 8Kg is 1/4Kg.
A 1Kg auxiliary weight W4 of 4 is stored in each basic weight W1 (Fig. 5B) to form a weight block, and 3.
Determine each point of 6, 8, and 12 kg.

For the following 15Kg scales, W4 shown in Figure 5C
(1Kg), W5 (0.5Kg), W6 (0.25Kg) total of 3 pieces
The 1.75Kg auxiliary weight is stored in the 2Kg basic weight W1 to form a 3.75Kg weight block, and the scale plate is
4 points are determined: 3.75, 7.5, 11.25, and 15 (Kg).

Figure 5D shows weight block W1 (2) for a 20Kg scale.
Kg)・W3 (2Kg)・W4 (1Kg) total 8Kg, same figure E
W1 (2Kg), W2 (4Kg), W4 (1) for 30Kg scale
Kg)・W5 (0.5Kg) This shows a weight block with a total weight of 7.5Kg. Note that a convex portion 7 and a concave portion 8 are provided on the bottom surface of each of the weights W1 to W6, respectively, and the concave and convex portions are engaged with each other during storage to prevent lateral displacement.

As shown above, the basic weight W1 of 2 kg and 4 (W
2)・2(W3)・1(W4)・0.5(W5)・0.25(
W
6) By preparing 4 auxiliary weights (unit: Kg), 8, 10, 12, 15, 20, 30, (unit: Kg)
Weight blocks that can be used for six types of weighing scales are combined and constructed. This has the effect of eliminating the uneconomical problem of producing dedicated divided weights of different weights for different weighing models.

Devices that perform the above-mentioned inspection by automatically adding and subtracting several weights are disclosed, for example, in Japanese Patent Application Laid-Open Nos. 58-96225 and 1983-
Disclosed in Publication No. 193328. The weight of the present invention is also used in this manner, and Figures 1 and 2 illustrate its construction.

The basic weights W1 are suspended in sequence from the connecting members 1 and 2, the uppermost basic weight is suspended from the vertical movement member 4 of the lifting device 3 shown in Figs. 1 and 2, and the lowest basic weight is suspended from the test scale M. The weight is placed on a mounting table Ma, and the lifting device 3 is electrically activated by operating the lifting/lowering push buttons 5 and 6 to add or remove weights one by one.

A hanging hook 1 is provided as a connecting member on the left and right sides of the upper outer surface of each basic weight W1, and a hanging pin 2 is provided on the lower outer surface of the lower basic weight W1 in a direction perpendicular thereto.
The hook 1 of the upper basic weight W1 is hung on the pin 2 of the upper basic weight W1 and suspended one after another, so that a gap G (FIG. 3) is created between the upper and lower weights. If the upper weight W is lowered within the gap G to such an extent that its pin 2 separates from the hook 1 of the lower weight W, the upper weight will not be loaded on the platform. The hook 1 of the uppermost weight and the hanging pin 13 of the vertically movable member 4 have the same relationship.

Note that the basic weight W1 is 2 kg, including the weight of the above-mentioned hook 1 and pin 2 attached.

Next, the lifting device 3 is a prime mover 3 such as a reversible motor.
A suspension plate as the vertically moving member 4 is suspended from the lower end of a rack rod 10 or a threaded rod/cable, etc., which is driven by an interlocking mechanism 3b by a, and a horizontal rod 11 provided on the suspension plate 4 is suspended. Attach a pair of left and right hanging tools 12,
The hanging tool 12 is provided with a hanging pin 13 for the hook 1 of the uppermost divided weight. Reference numeral 14 denotes a device frame, and 15 a hanging plate guide rod, along which the hanging plate 4 moves up and down along its groove 15a.

When the lower push button 5 is pressed, the electric circuit of the motor 3a is closed and the hanging plate 4 is lowered by the rotation of the motor, the lowest weight block is placed on the platform Ma, the next higher weight block is lowered, and the hanging pin 2 is placed on the lowest weight. The hanging plate 4 indicates that the lowest weight block has moved away from the hanging hook 1 of the block and is in the position where the weighing instrument M is loaded.
The actuator 16a provided relatively to the guide frame 15 is
Activate the limit switch S1 to detect the position and automatically stop with that signal. In that state, the scale M
Read the instrument error on the 1/4 scale of the weighing scale, and perform 9 adjustments to correct the instrument error.

Next, the lower push button 5 is pressed again to rotate the motor 3a, and the actuator 16b and limit switch S2 on the left side of FIG. 1 detect that the second weight block from the bottom is placed on top of the previous weight block. , automatically stops at that signal, and repeats the operation sequentially to judge whether the scale of 1/2 of the weighing scale passes or fails.

First, load the entire weight block onto the stand Ma.
In addition, if you want to sequentially pull up and remove from the top weight block, press the up button 6 and reverse the motor 3a to pull up the weight, and the limit switches S4 to S1 operate to detect and stop the position in order from the bottom. You may let them.

[Brief explanation of the drawing]

Figure 1 is a front view of an inspection device using the divided weight blocks of the present invention, Figure 2 is a side view thereof, Figure 3 is an explanatory diagram of the divided weight blocks of the present invention connected and suspended, and Figure 4. 5 is a front view of a basic weight and an auxiliary weight for constructing the weight block of the present invention, and FIG. 5 is an explanatory diagram of a combination of weight blocks corresponding to division of weighing. W...Divided weight, W1...Basic weight, W2~W
6... Auxiliary weight, 1/2... Connection member, 3... Lifting device, 3a... Motor, 4... Vertical movement member,
5/6...Push button, M...test measuring instrument, Ma...mounting table.

Claims (1)

[Claim for Utility Model Registration] To obtain a divided weight block that can be used for several types of scales with different weighing capacities, and four weights with a weight of 1/4 of the smallest weighing capacity of the several types of scales are recessed. The basic weights are formed into basic weights, each of which is provided with an engaging member for mutually connecting and hanging, and the difference between the weight of the scale with the above-mentioned minimum weight and the weight of the scale with the next higher weight. An auxiliary weight with a weight of 1/4 of the weight, an auxiliary weight with a weight of 1/4 of the difference between the weighing weight of the scale with the next higher weighing capacity after the above-mentioned upper scale and the lowest weighing scale, and an auxiliary weight with a weight of 1/4 of the difference in weight between the weighing scale of the next higher weighing scale and the lowest weighing scale. Auxiliary weights for the weighing scale: The weights of each of the above auxiliary weights are obtained by combining four auxiliary weights each with different weights, and the auxiliary weights obtained by the combination are placed in the recess of the basic weight. A weight block configured to be stored in a chamber.