JPS58722A - Continuous measuring device - Google Patents

Abstract

PURPOSE:To remarkably elevate measuring accuracy, by constituting a forecasting mechanism so that the magnetic attracting force between a magnet and a magnetic substance becomes inclined motion control reaction. CONSTITUTION:A magnet device D' for inclining and moving a distributing member 2 to a totally-enclosed state suddenly like acceleration immediately after a rocking start of a main lever 3 following a distributing supply in a small flow rate state is provided between a supporting arm 5 of the distributing member 2 and a center fixed frame. That is to say, permanent magnets 33, 33 are provided on both left and right side parts of the center fixed frame, respectively, and adsorption plates 34, 34 are provided on the supporting arm 5. The attracting magnetic force operating between the magnet 33 and the adsorption plate 34 is in inverse proportion to square of a distance between both of them, therefore, when the magnet 33 having suitable magnetizing strength is used, no influence is exerted on an inclined motion L3 extending from a large flow rate state L2 to a small flow rate state L4, a substantial attracting action can be displayed for the first time at a position where some quantity has been inclined and moved to a totally-enclosed side S from the small flow rate state L4, and once the attracting action has been displayed, it is possible to suddenly shift to the totally-enclosed state S.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is configured such that each one of a pair of storage devices can be connected to each other of a pair of measurement-required members through a single main frame for measurement, and can be linked and switched alternately. In addition, a mechanism is used to distribute the objects to be weighed to both storage devices in conjunction with the tilting of the main rod, and when the main rod tilts beyond a certain level, A drag force is applied to restrict further tilting, and the distribution mechanism temporarily keeps the ratio constant, and as the needle advances in this state, the weight corresponding to the drag force is weighed. This relates to a continuous needle metering device which is provided with a predictive mechanism for allowing the main rod to tilt when there is an increase in the amount of material.

The continuous weighing device with the above configuration was previously proposed by the present applicant, and even after a predetermined measurement and storage is completed in one storage device, the continuous weighing device continues to carry out the required measurement and storage in the other storage device. By carrying out weighing and storing a large number of times without interrupting the flow of objects to be weighed, continuous or almost It has the advantage of being able to be carried out continuously and extremely efficiently.

At the beginning of development, a weight (predictive weight) was used as the aforementioned predictive mechanism. That is, predictive weights were connected to both sides of the main rod via flexible cables. In this case, a large flow condition! I (maximum 100%.

The other one is 0%) and then the small flow rate U<10%, for example.
In this case, the other one shifts to 0%), and this low flow rate state is maintained for a certain period of time, that is, until an amount of the object to be weighed equivalent to the weight of the predictive weight is replenished by the action of the predictive weight. This method uses a step-by-step metering method in which the meter is fully open from beginning to end, and then fully closed all at once when a predetermined amount is detected. This has the advantage that the head error caused by the falling object can be kept small.

However, in the K initially developed as described above, as shown in the correlation graph of flow t (ql vs. time (tl) in FIG. The movement (X) was slow, and at the point of full closure, the support arm of the member and the main rod that is integrally interlocked with it are fixed at the end of the swing range, and the next stopper and When a collision occurs, the stopper receives a repulsive force and oscillates several times in a pulsating manner (Hennung phenomenon).
The reality is that, due to the synergistic effect of ``1'' and ``Atsuko,'' it is still not possible to obtain sufficient results in terms of suppressing the head error.

As a solution to this inconvenience, the applicant has already proposed the following structure.

As shown in Figure 13, the main rod (3) is distributed between the main support arm and the central fixed frame, and the main rod (3) is distributed in the small stream. Immediately after the start of swinging, the distribution is done using a magnet device (D) that rapidly tilts the member (to the fully closed state) with acceleration. A magnet Km, @3 is attached, and a magnetic attraction plate e4 for the magnet Km, @4 is attached to the support arm (5).
Since the attractive magnetic force Fi acting between the magnet and the adsorption plate is inversely proportional to the distance between the two, it increases rapidly and at an accelerated rate as the two come closer. Therefore, by using a magnet (G) with an appropriate magnetization strength, a large flow state [
1 (Ls) to the small flow state fl (L4) (Ls
) without affecting the tilting of the valve D (L4), and the actual suction action can be exerted only at a position tilted a certain amount from the small flow state D (L4) to the fully closed side (81), and once the suction action is exerted. However, it is still possible to suddenly shift to the fully closed state fl (81). However, it is still possible to avoid the cutting operation (X draws a curve and causes a considerable head error corresponding to the shaded area). The reason for this is that at the beginning of the cutting operation (X'), the attractive magnetic force is small, resulting in slow movement due to weight balance.

Based on the above-mentioned technological developments, the present invention aims to rapidly perform the cutting operation from the initial stage and to make the head error much smaller than in the past, in other words, to dramatically improve the measurement accuracy. The purpose is to

The continuous weighing device according to the present invention is characterized in that, in the configuration described above, the prediction mechanism is configured such that the magnetic attraction force between the magnet and the magnetic body becomes the above-mentioned tilting restriction force.

The operation of the present invention will be explained based on FIGS. 1 and 3.

In the time turtle, W is the weight of the object to be weighed in the storage device, W is the weight of the balance weight, and W is the magnetic drag. Assuming that the flexible cable (t) is fully extended at time tl, then the time when aw 10 FS, -8b MU (im) is satisfied. The main shaft is immovable up to the shaft. However, for convenience, the weight of the magnet is omitted. The principle is the same even if the weight of the magnet is taken into account. Mu (il) is a predetermined amount of glue 0%, A
(@s)u 700% close. Assume that the magnet starts moving away from the magnetic body at the next very short time t. If the magnetic drag force at this time is Fl, then 1. Fmk-
, from the relationship, Fl((F0'). In addition, since A (iho+hemo)〉mu(mol)
+*・Fl ((b4(&g+4)).

In other words, the right side increases by a little while the left side decreases sharply, and the difference increases all at once, so that the main rod () instantaneously (-) tilts toward the fully closed side 181.

See (3) in ts8 diagram. In other words, it was as if one side had been in a situation where they were pushing each other to the maximum, and then suddenly one side let go.

As described above, according to the present invention, the cutting operation from the final point of the small flow section to the fully closed state is performed extremely rapidly from the initial stage, the head error can be minimized, and the measurement accuracy can be dramatically improved. .

Hereinafter, the outline of the configuration and operation of the continuous measuring device to which the present invention is directed will be explained based on FIGS.

The continuous needle metering device of this spear has two storage devices (81, Bl), each one of which is placed in one main frame for metering (
11 and a pair of members (C) that require measurement.

4C1 is configured to be able to be linked and switched alternately and selectively, and the chevron-shaped distribution for distributing objects to be weighed to both storage devices (Bl, (8)) uses the weight balance member (2). This distribution is done by connecting the center of the member (1) to the arm (1) integrally connected to the main rod (3).
The distributing mechanism (2) is supported by the upper knife edge (6a) of 1. (4) is the fulcrum shaft of the main rod (81), (6) is the tare bag received and supported by the storage device (8). ,
(7) is a support member that extends downward from the storage device (!l@), and is supported by the main rod (3) in an important axis t@IK. An arm member for separating and lifting the balance weight (9) and balance weight +11 supported by the holder (to) attached to K from the holder II (
Ill, a pair of left and right arm members (river).

(Operation lever for switching between a state where each side of the river is activated and the other is not activated at the same time, and vice versa (II)
The main parts are as follows. 01 is the pivot shaft of the arm member (If) and this is the fixed base #! 1 (lIJK installed.

A bar pivoted on a shaft directly above and parallel to the fulcrum shaft (4) of the main rod (3)? -(1@ is the arm member (
An eccentric cam 01 is disposed between a pair of abutting members -, (11) which are connected to the bar CI@, and are linked to the bar CI@, and the cam CI@ and the operating lever body are integrally connected to each other. (lη is the pivot of the lever car. (7a)
is a bottle with a protruding support member (7) K, and the concave part of the bar 051 (
15m). (9) is a permanent magnet connected to the main rod (31) via a burnable cable,
There is a prediction mechanism consisting of a fixed part and a magnetic body (fiOA) attached. (2) is a swing link that links the fixed frame (2) and the support member (2).

A continuous metering device having the above-described structure operates with a psyche as shown in the marks or d) in FIG. 134.

However, in Fig. 4) or d) indicates a half cycle.

(in Figure 4) is the right wind g! [61 shows the initial state when the object to be measured is flowing down. In this case, by swinging the lever a4 to the right, the eccentric force (114, contact member -
Tilt the par 0@ through the bar 1- and insert the pin (7a) of the left support member (7) in the recess (15m) on the left side of the bar il@
and lift the entire left side storage device (8), release the engagement and contact between the left side support member (7) and the left pivot shaft (8), and remove the left side arm member ( The left balance weight (9) is transferred and supported to the left holder by swinging the river downward, and at the same time, the right link 114
By swinging the right arm member (II) upward through the right arm member (river), the right balance weight (9) is supported by the right arm member (river), thereby eliminating the load on the right holder +1 (I).
With this, tilt the main rod il+ to the lower left inclined position,
The right-side emphasis shaft (8) is brought into engagement contact with the right-side support member (7), and the distribution member is positioned at the leftmost end of its left-right movement range via the support arc (Il).

In this state, the entire amount of the object to be weighed from the flow outlet (1) is flowing down to the right tare (8).

Then, as the flow continues to the right tare bag (6) and its weight increases, the main rod (3) moves to the right storage device IB)'
Then, the member (2) gradually oscillates around the right axis (8) so as to move downward while maintaining balance with the left balance weight (9), and as a result, the member (2) is distributed to the right. The wavemeter from the outlet (outflow port) gradually moves to the left tare (6
), and moreover, the left tare (@) and the right tare (
6), the ratio is changed so that the ratio gradually decreases on the right side and increases on the left side. During this time, the main stick (3)
The left fascia (2) is extended as it tilts.

The distribution between the right side and the left side is set so that when the ratio reaches, for example, 10%:deO%, the left side cord ■ will be fully extended, and at this time, the left side magnet and magnetic material (80mm) The suction force between them acts as a resistance force against the tilting of the main rod (1).

Therefore, until the object to be weighed flows down by a weight equivalent to the magnetic attraction force (to be exact, a book including the weight of the magnet), this 10% = 0%, as shown in Figure 4 (b). The distribution shown continues as usual, and the object to be needled flows down to the right tare (-1) by a small amount, and to the left tare (6), it flows down to the amount.

Then, eventually, the weight of the wave flow equivalent to the magnetic attraction force is finished, and Jl! At the next stage, the main rod (S), and therefore the distribution of the parts (ri), move all at once to the fully closed position. It's like the string of a bow that has been drawn and released from the fingers.

See Figure 4 (c).

At this time, the left main axis (3) is attached to the left support member (7).
is in a state of engagement contact or close to it.

Next, the right tare bag (
・After removing i and replacing it with a new empty tare (@),
By swinging the V bar rJ@ to the left, as shown in Fig. 4)
As in, eccentric cam end, contact member O, fist, par a@
, the left arm member (through 14) is swung upward, and the left balance weight (9) is moved from the left holder to the left arm member (9
) and at the same time remove the right arm member (swing the river downward and transfer the right balance weight 111 to the right holder port. Lift up the entire right side storage device (8). At this time, the attitude of the main rod (3) does not change, or even if it changes, it changes only slightly. Therefore, when distributing the objects to be weighed (Il Fi), (6) It is in a position where the entire amount of K is allowed to flow down.After that, weighing is performed using the left storage device (8) and the right balance weight (9) with the left emphasis axis (@) as the fulcrum.

That is, the storing and weighing action for the left and right Sad fill (11) K is performed continuously without interrupting the flow of the objects to be weighed.

When weighing is being carried out in the other storage device (2), the objects to be weighed also flow down to one storage device (2). , the flow to the other storage device @ continues until it is completely closed, and finally 1
Reach 00%.

After the predetermined weighing has been completed, the tare (6) of the other storage device W@ is replaced, and until the lever is switched and swung, the fully open (ioo%) state O continues. When the storage device (2) is in the metering state, the distribution member gradually moves as the main rod (3) tilts, changing the flow rate.

Next, a specific embodiment of the magnetic attraction type prediction mechanism (b) according to the present invention will be explained.

Figure s5 is an enlarged version of the one in Figure 4.

The visibility rope (21) may be a chain, string, wire, or other suitable material.

In FIG. 6, a magnetic body (zom) is connected to the flexible cable (2), and a permanent magnet is attached to the fixed part.

Figure 7 shows how an auxiliary weight is connected to the cable, and a permanent magnet is embedded in the underside of the auxiliary weight.
A non-magnetic member supporting the lower surface is provided on the fixed part, and the retaining screw (toward) of the magnetic material (BOA) is fastened with a nut in the part that leaves a gap between the magnet and the lower surface. ) You can adjust the vertical dimensions of the sky [@ by operating R. Sky Vi (2)
Therefore, the drag force 0'o) is smaller than that of the contact type, but on the other hand,
If the weight of the auxiliary weight (goods) that helps stabilize the separation operation is H, then -Fo in the previous equation is...(Fo+H)
Should be. Also, even when there is no auxiliary weight (goods), to be exact, magnets and magnetic materials (80 people), cables (7
! Since there is a weight such as D, that weight, that is, the main rod, is
If the total weight is F, then 6・F@ija・(F
o + I), and with the auxiliary weight it is 1! should be -.(y, +I +H).However, the effect (separation of -qi) should be affected only by the size of Fo.

In FIG. 8, a non-magnetic material (2) is interposed between the magnetic material (BOA) and the magnet (2) as a liner instead of a gap, and a mutually fitting S (2) is provided to prevent side slipping. Adjust Fo by replacing the non-magnetic material (3) with one that has different vertical dimensions.

@Figure 9 is Sora i! A type with Jj■ made of non-magnetic material (5
) and a magnetic material (BOA) are provided with a reciprocal portion (2). Due to the existence of the interlocking part ■ in Figure 18, the cut fi#l is repeated again and again! t, has the function of keeping the current drag force Fo constant or almost constant during the action.

In Figure 10, a rod (21A) is used instead of the cable, and the insertion hole of the rod (21A) is inserted into the magnetic body (20 people).
1), and a stopper 02 is attached to the tip of the rod (21A). The stopper is made of magnetic material (2
When the main rod (3) comes into contact with the main rod (3), the application of drag to the main rod (3) begins.

Of course, an appropriate combination of any of those shown in FIGS. 5 to 10 may be included, a magnet may be included as the magnetic body (BOA), and an electromagnet may also be considered as the magnet.

In addition, the magnet device fit (D') as represented in Fig. 12
Combination use is also effective.

[Brief explanation of drawings]

The drawings illustrate embodiments of the continuous metering device according to the present invention, in which Fig. 1 is a principle diagram, Fig. 2 is a graph showing changes in magnetic attraction force, Fig. 3 is a graph showing changes in flow rate, and Fig. 4 is a graph showing changes in flow rate. Zuton, (
(b), (c), and (b) are explanatory diagrams showing the schematic structure and sequential operation; Figures 6 to 110 are side views and cross-sectional views of the main parts showing various aspects; Figure 11 is the one at the time of development. Figure 12 is a configuration diagram of the revised storage plan, and Figure 13 is a graph of its flow rate change. Prisoners...Distribution is the mechanism, TBI...Storage device, fc)--...Parts that need to be weighed, (D+--...
-Prediction 11! R, t3i... Main rod, -...
...Magnet, (20A) ...Magnetic material, (2)
... Visibility cable, ■ ... Gap, (g) -
... Non-magnetic material, (1 ... Interfitting part.

Claims (1)

[Claims] ■ - Each one of the goods storage devices (8), @) is
A pair of measuring parts are connected via the t88 main rod (3). The structure is configured so that the linkage can be switched alternately for each one of the above-mentioned storage devices (Tomoe) and @, and the mechanism for distributing objects to be weighed for both the storage devices (Tomoe) and @ is linked to the tilting of the main rod (3), and ,
When the main rod (11) tilts more than a certain level, a drag force is applied to both sides of the main rod (3) to restrict further tilting of the main rod (3), and the distribution is performed by the mechanical member. is a predictive mechanism for temporarily keeping the ratio constant and allowing the main rod (1) to tilt when the weight of the object to be weighed increases by a weight corresponding to the drag force as the weighing progresses in that state. (2) is installed in the continuous measuring device, and the prediction mechanism (6) is
A continuous weighing device characterized in that it is configured such that the magnetic attraction force between the magnet and the magnetic body (20 μm) becomes the above-mentioned tilting regulating force. ■ The magnetic attraction type prediction mechanism (2) is connected to the main rod (1).
nine permanent magnets connected via flexible cables to the
The continuous measuring device according to claim 2, wherein the fixed portion is provided with a magnetic body (sOm) attached. ■ The magnetic attraction type prediction mechanism (2) is connected to the main rod (3).
The continuous weighing device according to claim 0, comprising a large magnetic body (BOA) connected to the body via a flexible cable (2) and a permanent magnet attached to the fixed part. . ■Claim 0 or 0, wherein a gap or a non-magnetic body (2) is interposed between the permanent magnet and the magnetic body (80mm) in the attracting and holding position thereof. Continuous weighing device described in . (2) The continuous measuring device according to claim 0, wherein the vertical dimension of the air gap or the non-magnetic material (2) is adjustable. ■ A reciprocal fitting part between the permanent magnet and the magnetic body (10mm) that restricts the sliding of both -1 (20mm) when they are in an attraction and holding position and when the cable (b) is in a tensioned position. (
to)).The continuous measuring device according to any one of claims 0 to 0.