JPS5866024A - Continuous weighing device - Google Patents

Abstract

PURPOSE:To improve accuracy in weighing by providing a mechanism which allows a common single detector for detecting a given weighed amount to be automatically linked with only one weighing section with priority in weighing, and a control mechanism which can automatically shift a flow selector. CONSTITUTION:A frame body 8 placed and fixed onto a floor has a mount 10 for a detector 7 and a supporting shaft 11 at the center thereof. Two weighing sections 5 are positioned on both sides of stoppers 9 to constitute a seesaw- like structure. A lever 15 for transmitting stress has at its center actuator 16 in the form of an angular fulcrum, which acts on the detector 7. On the other hand, a flow selector 2 repeats the four states in a cyclic manner, and its operation is controlled by a control mechanism (b) in linkage with the detector 7.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is capable of measuring grains such as rice and wheat, other granular materials, liquids, and viscous materials by measuring them in predetermined amounts and packing them into bags or sending them to other processes. This invention relates to a device that allows continuous measurement without stopping the raw flow.

This type of continuous measuring device generally has a flow divider installed in seven supply paths to one measuring section, and each measuring section is provided with a detector for a predetermined measured amount, so that one of the measuring sections is given priority to the measuring section. When the detector is actuated as a deaf, the flow diverter is configured to switch to a posture suitable for the other metering part so that the other metering part is converted to a preferential metering staff position based on the detection result. be. Since the needle and two measuring units alternately measure the needle amount, highly efficient continuous needle amount is achieved without stopping the flow.

In conventional devices, one detector for a predetermined measurement quantity is provided for each measuring section. In other words, since there are two detectors, tolerances such as a difference in zero point or a difference in gain are avoided between the two detectors, and an error occurs between the actual measured quantity of one and the actual measured quantity of the other. , it is impossible to adjust the tolerance to t-0. <It is troublesome, and even if it can be adjusted once, it will be repeated]1, and it is inevitable that the difference will appear many times.
There was a drawback.

First, it is possible to provide three or more measuring units for the seven supply routes, and in that case, three or more detectors would be provided for each, which would reduce the variation in the difference between each unit and the need for correction. It is easy to imagine that the difficulty would be enormous.

The purpose of the present invention is to solve these drawbacks and problems.The present invention aims to solve these drawbacks and problems by supplying any seven objects to be weighed flowing through a single continuous feed path for objects to be weighed that is common to a plurality of parts. For distribution such that the amount supplied to the measuring section is larger than the amount supplied to any of the other measuring sections, a flow dividing device that controls the supply is provided in a state that acts cyclically on each measuring section, and the plurality of needles A single predetermined measurement m detector that is common to the weighing sections, and a mechanism that automatically links this detector only to each of the seven weighing sections that have weighing priority, in accordance with priority weighing in this weighing section. and a control mechanism for automatically shifting the flow diverter to the next operation in its cycle operation based on the detection result by the detector.

The gist is: That is, (a) there are seven detectors common to multiple measuring sections, and (b)
A linkage mechanism automatically determines which of the seven measuring sections are giving priority to measurement, and automatically links them to a single detector. For xts e.g. 70%<1<de f51;, y=100−x.

j% x 30%%■ xX→■100%→■ y%→■ OX and switching 1
For the measuring section to be weighed next, starting from ■, switch as follows: ■ X% → ■ 100% → 0 YX → ■ 0%. When there are two measuring parts, ■ and ■, or ■ and ■ are parallel. See Figure 4.

Therefore, the premise of continuous measurement without stopping the source flow is not compromised in any way, and at the same time, by unifying the detector, the drawback of multiple detectors mentioned earlier, that is, the hassle of mutual adjustment, can be avoided. This eliminates the occurrence of errors in the actual measured quantities, and allows the actual measured quantities in any measuring section to be kept constant.

Moreover, in the metering unit that is giving priority to metering, there is a switching operation of the flow diverter such that a rapid shut-off is performed when the supply amount approaches 100% of the predetermined measured amount. In other words, the switching from ■y% to ■0% - and from ■y% to ■O% are the deadlines for completing measurement, but ■ and 00yX
Since the opening amount of (1~, ?ON) is small, the time required to completely close 0% is much shorter than that required to change from 700% to 0% all at once, and the deadline is It has very good performance. It is possible to reduce the drop error to almost zero. This, combined with the fact that the actual measured amount in any measuring section can always be kept constant (as mentioned above), has made it possible to perform extremely high-precision continuous measurements using a single detector. It is.

Embodiments of the present invention will be described below based on the drawings.

(2) is a flow dividing device built into it, [3), 13) is an electromagnet as its actuator, 14) Fi is a chevron type distribution device, , +
61, +61 are a pair of left and right measuring parts, +6+, (
@l is a storage bag, (7) is a single predetermined measurement quantity detector, 1j
These are the Ll linkage mechanism and the fblFi control mechanism.

The configuration of the linkage mechanism +IL+ is as follows.

(8) is a frame body that is fixed in position on the floor, etc., and has stoppers +9+ and 19)'t on the left and right upper ends, as well as a stand for mounting a detector () and a support shaft (river) in the center.Each measuring section ( 6) is a pair of support plates 021 and 0 located on both sides of the stopper (9), which are connected by a U hand plate 01, with a 1 m long connection installed between the lower ends of the left and right U hand plates 01. The center of member I is pivotally connected by a support shaft (river), and has both measuring parts (5) and (S). The detector is +71 K, and the lever is like a trap.

Edges aη, rJη are integrally attached to both ends of the lever ao, and both edges Oη, (Iη also have stoppers 191,
The supporting plate 0'4 is fixed to the lower surface of the 0-curvature while facing the lower surface of the support plate 191. Storage bag (6) is supported by support plate 02),
(Supported on 121. When there is no load, the upper surface of the left support plate 021, Om and the right support plate (12), 02
) is on the same horizontal plane as the upper surface of the stopper 191 and +91, and is slightly higher than the upper surface of either of the stoppers 191 and +91.
Also, both edges (lη, C1η are also stopper T91
, is slightly lower than the bottom surface of +91.

It may be a light contact.

The flow diverter (2) cyclically repeats the soft part of the gutter as shown in Figure 3, and its operation is controlled by a control mechanism (bl) linked to the detector (7).

(2) It is assumed that the flow diverter (2) is in the distribution position of 0% on the left and 20% on the right, and a predetermined measured amount of 20X is stored in the right bag 1B+. Figure 1g8 (a).

■ When 100% of the predetermined measurement amount is stored in the right bag (6), the control mechanism (bl is the actuator 131, 131t and the flow diverter (2) is moved to the left 700% and the right The distribution of 0% is controlled so as to be converted to the posture. In other words, the cloth bag (6) has been weighed and is full. Fig. 8 (b).

■ Bag tel on the right: 100% of the total amount will be supplied.

During this time, I replaced the hot bag (6) with an empty bag. Eventually, when a predetermined measurement amount of 0% is stored, the control mechanism (111) changes the distribution of the flow diverter (2) to the left 20% and right row orientations through the detector (7). 8th rj!J ( c).

■ When the left bag (6) stores ioo% of the predetermined measured amount, the detector (7) sends the control mechanism (bl directs the flow diverter (2) to the left OX, and the right 700% distributes the posture In other words, the left bag (lllIfi measurement has been completed and is full. See Figure 8).

512 fi+ on the right is supplied with 100% of the total amount.

During this time, I exchanged the left hand (6) for an empty bag. Eventually, when a predetermined measured amount of 0% is stored, the control mechanism (bl) via the detector () returns to the state of (2).

Therefore, from ■ to ■, priority is given to the left measuring part (6), and from ■ to ■, priority is given to the right measuring part (6), which acts on the detector () as follows.

For example, when priority is given to the right false weighing section (6), the cloth bag (6) is heavier than the left bag (6). Therefore, the connecting member 04 and the lever (151) of the seesaw are downward to the right and upward to the left.

The upward movement to the left is limited by the contact of the edge 071 with the lower surface of the stopper (9), while the downward movement to the right has no limit. Figure 5. Looking at the power relationship, Wl X 4 =
(Wt + x) X Lx −■t,
= C2= When t, Wr = Ws + x
−■F −Wr +(Wtr + X
) = 2W+-■ In other words, Wl is ignored and a weight that is one times Ifiwl is applied to the detector (7).

Incidentally, the relationship between the edge o'II and the support plate 04.0 may be a through type as shown in FIG. Also, a pivoting structure is preferable for the connection between both ends of the connecting member and the hand plate of the U at a ratio of 0:1. In short, the components (River, 0311131.H.

o61. 4. oη, Oη should just be a donkey pal mechanism.

When there are three measuring sections (6), the structure may be configured as shown in FIG. 7.

Further, the detector (7) may be anything such as a proximity switch, a limit switch, a load cell, a spring, etc.

[Brief explanation of the drawing]

The drawings illustrate the implementation of the continuous measuring device according to the present invention, with FIG. 1 being a partially longitudinal front view, and FIG. 2 being a perspective view of the main parts.
Fig. 8 00) or d) is an explanatory diagram of the operation, Fig. 4 is a diagram of changes in supply flow rate for left and right distribution, Fig. 5 is an explanatory diagram of the principle, and Fig. 6 (
2) is a perspective view showing another aspect of the part, and FIG.
FIG. +11... Supply route, (21... Diversion tool, (5)... Measuring section, (7)... Detector, (9)... ...Stopper, (141...
...Connecting member, vehicle... lever, -... actuator, sphere... linkage mechanism, (bl... control mechanism.

Claims (1)

[Scope of Claims] ■ A plurality of measuring units (Il, (51K) have a single common continuous object to be weighed supply path +11, and the object to be measured flowing therethrough is supplied to any one measuring unit (6). A flow diverter It+ is provided in a shape 1i1 that acts cyclically on each measuring section (6) to control the supply of distributed sand such that the amount supplied is larger than that to any of the other measuring sections 161K. A single predetermined measurement quantity detector (7) common to the plurality of measuring units +61, +61, and this measuring unit only for each of the seven measuring units li+ with this detector (7) t-measuring priority. (
6) Mechanism il+ that automatically cooperates with priority weighing
and a control mechanism (BL) for automatically shifting the flow diverter (21) to the next operation in its cycle operation based on the detection result by the detector. Mechanism 1&l, all measuring parts tel, +6
A member a41t connecting 1 is swingably supported at its center point,
The actuator H for the detector (7) is located at the center point, and one metering section (6) K with metering priority has a corresponding free end that is dynamically linked to that metering section (61) and connected to the remaining metering sections (61). 6) The chain according to claim 0, wherein the free end corresponding to K is constructed by installing a lever supported by a fixed stopper (9) on the total measuring part ill, +61. - Needle amounting device.