JPS6035011B2 - Continuous weighing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly aims at measuring grains such as rice, wheat, etc. discharged from a grain conditioning machine such as a huller, and other granular materials in general, and continuously or intermittently supplies them. It relates to a measuring device used to measure a fixed amount at a time and pack it into bags, or to send it out to other necessary processes such as a continuous flow meter or a distributor (distributes evenly on the left and right sides).

Traditionally known weighing devices of this type include:
There is a type in which a weighing material distribution outlet with an opening/closing shutter is disposed directly above a weighing mechanism that can hold a weighing object storage bag in an upright position and at a position corresponding to the mouth of the bag. However, this follow-up device was generally configured as a batch system in which when one bag becomes full, the shutter is closed, the bag is replaced with a new bag, and the shutter is opened again to weigh the bag. In addition to being very inefficient, it takes a relatively long time to replace the bag.A relatively large capacity tank is installed above the shuttered outlet to temporarily store the objects to be weighed even when the shutter is closed. It is necessary to arrange a lotus structure at the top of the tank, and it is necessary to configure the horizontal length of the top and bottom from the weighing material inlet, which is usually located at a relatively low level, to the tank, which is difficult to achieve in terms of efficiency. The disadvantage was that the entire device was large and costly. The present invention has been made in view of the above-mentioned circumstances, and has the object of eliminating the above-mentioned disadvantages by providing a structure that allows continuous measurement.

First, embodiments of the present invention will be described below based on the drawings.

The main structure of the continuous weighing device according to the present invention is one inclined surface 2 disposed below the outlet 1 of the object to be weighed and having opposite inclinations to each other.
A mechanism A that distributes the objects to be weighed flowing down from the port 1 alternately to the left and right by tilting the chevron-shaped distribution members 2 having the shapes a and 2a alternately on the left and right; A pair of left and right object storage devices B, B for receiving and supporting tares 3, 3 for storing falling objects to be weighed in a replaceable (removable) manner on the extension surfaces of the slopes 2a, 2a or on the inner slopes thereof; The storage devices B, B are alternately connected to a scale-type weighing mechanism C, C that detects the weight of the storage devices B, B, and one main weighing frame 4 that is a component of the balance-type weighing mechanism C, C. and a switching mechanism to be linked. Reference numeral 4 denotes a main measuring basket whose longitudinal center portion is swingably supported around the center of the ball via a fulcrum shaft 5 in the front-rear direction directly below the chevron-shaped sorting member 2, and this main basket 4 is fixed. The distribution member 2 is attached to the upper end of the upright support arm 6.

Therefore, the sorting member 2 moves around the fulcrum shaft 5 in the same direction as the main camphor 4 tilts, and its position is changed from side to side.As a result, the falling object to be weighed from the falling row The proportion of the amount to be distributed between the left tare bag 3 and the right tare bag 3 is automatically changed. Such a structure constitutes the left/right distribution mechanism A described above. The object to be weighed storage device B has a tare 3 support plate 8 at the lower end of the inclined plate 7 for hanging the tare 3, and fall prevention plates 9 on both front and rear sides of the lower side.
9, and a tare bag 3 upper end open mouth supporter 10 is attached to the upper end of the tare bag 3, respectively.

The support 10 includes a presser plate 10a whose upper end is swingably supported on the inclined plate 7 so as to support and separate from the inclined plate 7, and a presser plate 10a with both end portions at the front and back sides of the lower end of the presser plate 10a. It consists of a bent U-shaped tare opening support village 10b, and a weight 10c is attached to the support punch 10b.
The weight 10c and the weight of the object to be weighed in the tare 3 press the holding plate 10a against the slant plate 7, and both plates 10a, 7
It is possible to securely fix the three mouths of the tare bag between the two. Reference numerals 11 and 11 denote support members that are fixedly extended downward from the inclined plates 7 and 7 of the left and right storage devices B and B, respectively. In this case, the main camphor tree 4 is engaged with and supported by important shafts 12, 12, which are arranged at positions farther from the fulcrum shaft 5 of the main camphor tree 4.

The fulcrum shaft 5 is constructed between a pair of front and rear brackets 14, 14 fixedly erected on a fixed base 13, and channel materials 4A, 4A for main camphor construction are provided near both front and rear ends of the fulcrum shaft 5, respectively. The main camphor 4 is constructed by integrally connecting the pair of front and rear channel members 4A, 4A via the pivot shafts 12, 12 and connecting members 15, 15 at both ends in the longitudinal direction. Reference numerals 16 and 16 indicate balance weights disposed in a front-back posture at positions corresponding to both ends of the main camphor 4, and are made by protruding rod-like members on both sides of a heavy cylindrical weight member.

At both ends of the channel members 4A, 4A, holders 17, 17, . The above-mentioned scale type measuring mechanisms C and C are constructed with such a structure. 19, 19 are the balance weights 16, 1
An arm member that can specially raise and support one end of the twill member 6 separately from the holders 17, 17, and its longitudinally intermediate portion is attached to the fixed base 1.
It is pivotably supported around the front and rear axes with respect to supporting members 18, 18 which are fixedly erected from 3.

The lower ends of links 20, 20 in vertical postures are pivotally supported at the inner ends of these arm members 19, 19, respectively.
0 is the support member 11, 11 of the left and right storage devices B, B.
It is pivotally supported at both ends of a bar 21 that is constructed so as to span therebetween. Near both ends of this bar 21, the support members 11
, 11 are formed with recesses 21a, 21a that can be engaged from below with pins 11a, 11a protruding from the recesses 21a, 21a. 22
is a manual operation lever that is pivotally supported around one of the brackets 14 so as to be able to vibrate freely around the front and rear axes, and an eccentric cam 24 is fixed to one end of the pin support shaft 23.

Rear abutment members 25, 25 are integrally connected to the bar 21 and are continuously abutted on both left and right side surfaces of the eccentric cam 24. A similar eccentric cam 24 is fixed to the other end of the pivot shaft 23, and a series of members for specially raising and supporting the other end rod-shaped members of the balance weights 16, 16 with respect to the eccentric cam 24; That is, arm village 19, 19, link 20, 20
, bar 21, posture support members 25, 25, etc. are associated in the same manner as described above. The aforementioned switching mechanism is configured with such a structure.

Reference numerals 26 and 26 refer to auxiliary weights supported and carried via chains or wires, such as bendable strands 27, 27, to the center portions of the connecting members 15, 15 extending between the left and right ends of the main camphor tree 4. The strands 27, 27 have a length such that they become slack when the main camphor 4 is in a horizontal position.

Reference numeral 28 denotes a central fixed frame fixedly erected from the base 13 between the supporting members 11, 11 of the left and right storage devices B, B. , 29, and the elongated hole of a section 30 with an elongated hole provided at the lower end side of the support arm 6 is slidable relative to the protruding pin 31 from the fixed frame 28. It is locked.

Next, the operation of the continuous measuring device having the above configuration is shown in Figures 3 to 3.
This will be explained based on FIG.

FIG. 3 shows the initial state in which the object to be weighed is first flowed down the tare bag 3 on the right side.

In this case, by swinging the lever 22 to the right, the bar 21 can be moved via the eccentric cam 24 and the rear support members 25, 25, and the left support member 11 can be moved in the recess 21a at the left end of the bar 21. The pin 11a is raised to raise the entire left storage device B, the engagement between the left support member 11 and the left pivot shaft 12 is released, and the left arm member 19 is pivoted downward via the left link 20. At the same time, the right arm member 19 is swung upward via the right link 20 to support the right balance weight 16 by the right arm member 19. The load on the right holder 17 is eliminated, the main camphor 4 is moved to the lower left end tilted position, the right emphasis shaft 12 is engaged and abutted to the right support member 11, and distributed via the support arm 6. The member 2 is positioned at the leftmost end of its horizontal movement range. In this state, the entire amount of the object to be weighed from the flow down row is flowing down to the right tare bag 3. As the weight continues to flow down to the right tare 3 and its weight increases, the main camphor 4 rotates around the right weight axis 12 so that the right storage device B moves downward while keeping it in balance with the left balance weight 16. The object to be weighed from the flow outlet 1 is also flowed down to the left tare 3, and further to the left tare 3 and the right tare 3. The distribution ratio is gradually decreased on the right side and increased on the left side.

During this time, the left side filament 27 is extended as the main camphor 4 moves around the fulcrum shaft 5. The left side strand 27 is set to be fully extended when the distribution ratio between the right side and the left side reaches 10%:90%, and at this time the left side auxiliary weight 26 comes to work for balance.

Therefore, until the object to be weighed has flowed down by the weight of the weight 26, this 10%:90% distribution state shown in FIG. However, a large amount of water flows down to the left tare bag 3. Then, the main camphor 4 slowly begins to tilt again, and the distributing member 2 slowly begins to move again, and after a while, the distributing member 2 reaches the rightmost end of its movement range as shown in FIG. The entire amount of the object to be weighed is allowed to flow down to the left tare bag 3, and the flow to the right tare bag 3 is stopped. At this time, the left emphasis shaft 12 is engaged with the left support member 11 or in a state close to it. Next, remove the tare bag 3 on the right side, which has contained a predetermined amount of the object to be weighed, and replace it with a new empty tare bag 3, and then swing the lever 22 to the left to adjust the bias as shown in Figure 6. Core cam 24, contact members 25, 2
5. At the same time, swing the left side member arm member 19 upward via the bar 21 and the links 20, 20 to remove the left balance weight 16 from the left side holder 17, and simultaneously swing the right arm member 19 downward to remove the right balance weight 16. The right side holder 1
Moved to 7. Also, the bar 21 right side recess 21a and the pin 11
The entire right side storage device B is highlighted by a. At this time,
The posture of the main camphor 4 does not change or changes only slightly. Therefore, the sorting member 2 is in a position where the entire amount of the object to be weighed is allowed to flow down to the left tare bag 3. Thereafter, weighing is performed using the left side storage device B and the right balance weight 16 using the left side weight 12 as a fulcrum. That is, both left and right tares 3,
It is possible to carry out the storing and weighing operation for No. 3 continuously without interrupting the flow of the object to be weighed.

The present invention also includes those modified and implemented as follows.

1. From the eccentric cam 24 to the arm member 19 used in the above example in which the left and right measuring mechanisms C and C are interconnected,
The switching mechanism up to 19 may be operated mechanically, preferably automatically, by a motor, an air cylinder, etc., rather than relying on the manual operation lever 22 as in the above example.

In the above example, removable and replaceable storage bags were used as the tares 3 and 3, but a storage container such as a hopper was fixed, and an opening/closing gate was provided on the bottom of the container in the parentheses, so that the container could hold a predetermined amount of material to be weighed. When an item is stored, the gate may be opened manually, preferably automatically, to send the item to the next required process.

Alternatively, the container may be configured to be able to swing around the machine axis, and may be configured to flow out to the next process by swinging after a predetermined measurement. Furthermore, the bag or container may be configured to be sent out and discharged to the outside of the premises. In the above example, when the auxiliary weights 26 and 26 temporarily stop the movement of the main camphor 4, the distribution ratio was set to 10%:90% (and vice versa), but this was set to 5%:95%. Or set it to 7%:93%. Also, this ratio should be configured to be adjustable at will. An example of this adjustment means is to configure the length of the strands 27, 27 to be freely adjustable. Furthermore, the weight of the falling object to be measured at the time of the temporary stop is configured to be freely adjustable. Possible means for this include replacing the auxiliary weights 26, 26 with ones of different weights, or increasing or decreasing a plurality of weights. N In the above example, the flow outlet 1 is formed at the lower end of a pyramidal or conical bucket, but this flow row may also be configured with the end of a belt feeder, rotary leaf feeder, screw feeder, etc.

g) The device of the present invention may be used as a distributor that evenly distributes water alternately on the left and right sides, or as a continuous flow meter that calculates the total flow rate by the number of measurements x one measurement value.

Although various embodiments have been described above, the gist of the continuous weighing device according to the present invention is that the material sorting member having two slopes with opposite slopes arranged at the lower end of the outlet of the object to be weighed is arranged alternately on the left and right. a mechanism for distributing objects to be weighed falling from the mouth alternately on the left and right sides by tilting; a pair of object storage devices for receiving the sorted objects to be weighed on both left and right sides of the sorting mechanism; It is equipped with a scale-type measuring mechanism that detects weight, and a switching mechanism that alternately links the storage device with one main measuring stick that is a component of the scale-type weighing mechanism, and also includes a balance-type weighing mechanism that detects weight. The chevron-shaped sorting member is mechanically interlocked with the swinging of the weighing main rod that accompanies the supply of objects to be weighed to the one storage device whose linked state is selected by the switching mechanism. The present invention is constructed to continuously reduce the supply ratio of objects to be measured until the supply is stopped, and has the following effects.

In other words, since the chevron-shaped sorting member is used to alternately distribute the falling objects to be weighed to the left and right storage devices, even after the specified weighing and storage is completed in one storage device, the objects to be weighed and stored in the other storage device can be continuously weighed and stored. By carrying out the required weighing and storing, and then returning the storage device that finished weighing and storing to its empty initial state, multiple weighing and storing operations can be carried out continuously without interrupting the flow of the material to be weighed. Alternatively, it can be carried out almost continuously and extremely efficiently, and therefore has the advantage that the conventional large-capacity tank for temporary storage as well as the need for a tin-covered isobe to the tank can be omitted.

Furthermore, since the chevron-shaped sorting member is mechanically linked to the swinging of the main camphor, there is no need to provide a special drive device to operate this sorting mechanism, and the structure is simple and can be implemented economically. In addition to having the advantage of being easy to handle, this chevron-shaped sorting member continuously changes from supplying the entire amount of falling objects to one storage device to stopping supply, so the amount of flowing objects decreases as it approaches the predetermined amount. This has the advantage that measurement errors can be kept small, and when the supply is stopped, this distribution member plays the role of a conventional shutter. Furthermore, a switching mechanism is provided to alternately link the left and right storage devices to one main weighing device, which is a component of the balance-type weighing mechanism. Compared to the case where independent weighing mechanisms are provided for each of the left and right storage devices, a considerable number of parts can be used in common, and by reducing the number of parts, the entire device can be weighed. Since it is compact and has a simple structure, it has become possible to achieve sufficient miniaturization and economicalization for the intended purpose.

[Brief explanation of the drawing]

The drawings show an embodiment of the continuous measuring device according to the present invention, and the first
The figure is a partially cutaway front view, FIG. 2 is a partially cutaway side view, and FIGS. 3 to 6 are operation explanatory views. 1... Outlet, 2... Chevron distribution member, 2a... Slope, 3... Tare, A...
... Left and right sorting mechanism, B... Item storage device to be weighed, C... Balance type weighing mechanism. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1 By tilting the chevron-shaped sorting member 2, which has two slopes 2a, 2a with opposite inclinations arranged under the outlet 1 for the objects to be weighed, alternately on the left and right, the objects to be weighed flowing down from the port 1 can be separated from the left and right. A mechanism A that alternately distributes objects to be weighed, a pair of object storage devices B, B that receive the distributed objects to be weighed on both the left and right sides of the distribution mechanism A, and a balance type weighing device that detects the weight of the storage devices B, B. Mechanism C, C and balance type measuring mechanism C
, C, and a switching mechanism for alternately linking the storage devices B, B to one main weighing rod 4, which is a component of the left and right distribution mechanism A. Mechanically interlocking with the swinging of the main weighing rod 4 as the object to be weighed is supplied to the one storage device B whose linked state has been selected by the switching mechanism, to the one storage device B. A continuous weighing device configured to continuously reduce the supply ratio of objects to be weighed until the supply is stopped.