JPS6236098Y2 - - Google Patents

Description

[Detailed description of the invention] This invention has a plurality of supply troughs arranged radially around the outer circumference of a conical distribution table that performs spiral reciprocating vibration, and each supply trough is individually vibrated at a predetermined time. The material to be supplied is temporarily stored in a pool hopper, and the material to be supplied stored in the pool hopper is supplied in bulk to each weighing hopper, and
The present invention relates to a so-called combination calculation type automatic weighing device that performs a combination calculation of each weighing value obtained by a plurality of weighing machines to obtain a predetermined weight or a weight closest to it.

As a conventional distributed feeding device in a combination calculation type automatic weighing device, a plurality of outlets are provided on the outer periphery of a parts feeder or a ball feeder that distributes the material to be fed in the circumferential direction, and each outlet is provided with a plurality of outlets from the weighing machine. A shutter that opens and closes in response to a signal is installed, and the parts feeder or ball feeder is constantly driven and the shutter is opened at a predetermined time to supply the material to each weighing machine, or one that is integrated with the parts feeder or ball feeder. a plurality of supply troughs are arranged radially around the outer circumference thereof, and each supply trough is equipped with a rotating hopper having a plurality of bucket-shaped chambers so as to rotate intermittently at predetermined times;
There is one in which the parts feeder or ball feeder and each supply trough are constantly vibrated, and a rotary hopper is intermittently rotated at predetermined times to supply the material to each weighing machine.

However, in the former distributed supply device,
The material to be supplied may be destroyed or damaged by the shutter, and the material may be caught or scattered by the shutter.

On the other hand, even in the latter dispersion feeding device, the material to be fed may be damaged by the rotating hopper, or the material may be caught between the rotating hopper and the trough, and each feeding trough may Because it is constantly vibrating, the wrapping paper for the twisted-wrapped supplies sometimes comes undone. Furthermore,
In order to vibrate the parts feeder or ball feeder and each supply trough integrally formed therewith, a vibration generator with a large vibration capacity is required, the vibration noise generated by the vibration generator is high, and the production of the supply trough is easy. It wasn't.

Therefore, the above-mentioned conventional combinational calculation automatic weighing devices have a problem with the distributed feeding device, and each of them has the drawback that there are many types of materials that cannot be supplied, and the range of use of the materials that can be supplied is limited. Ta.

This invention is a combination calculation type automatic weighing device that improves and eliminates various drawbacks of the conventional distributed feeding device.Hereinafter, one embodiment of this invention will be described with reference to the drawings.

Reference numeral 1 denotes a dispersion section (hereinafter referred to as a dispersion table) formed in a conical shape, which is mounted and supported on an electromagnetic vibration device 2 to perform helical reciprocating vibration. 3
A plurality of supply troughs are arranged radially around the outer periphery of the dispersion table 1, and each rear end thereof is positioned below the dispersion table 1 so as not to come into contact with the dispersion table 1. One side wall 3' of the supply trough 3 is a vertical wall, and approximately the front half thereof is a mountain-shaped vertical wall 4, and the other side wall 3'' is approximately the front 2/3 is a mountain-shaped sloped wall 5, The remaining approximately 1/3 is an inclined wall 6 that slopes outward along approximately the rear half of one side wall 3' of the adjacent supply trough 3, and approximately the rear half of the side wall 3'' is provided along approximately the rear half of one side wall 3' of the adjacent supply trough 3. They are stacked on the side wall 3' of No. 3 in an overlapping manner so as not to come into contact with the side wall 3' of No. 3. Reference numeral 7 denotes an electromagnetic vibration device for vibrating each supply trough 3, to which each supply trough 3 is attached and supported. Reference numerals 8 and 8' denote a light emitter and a light receiver that are placed opposite to each other with the dispersion table 1 in between, which detect the amount of material accumulated on the dispersion table 1 and transfer the material from a supply device (not shown) to the dispersion table 1. Controls the supply of materials to be supplied. The light projector 8 and the light receiver 8' are fixed to support columns 9 and 9', respectively, so that their vertical positions can be adjusted. Reference numeral 10 denotes a circular support stand positioned above the frame 11 via a plurality of legs 12 erected and fixed on the frame 11, and the electromagnetic vibration device 7 is placed on the support stand 10.

On the other hand, reference numeral 13 designates a pool hopper 14 located at the bottom of the tip of the supply trough 3, a weighing hopper 15 located at the bottom thereof, a weighing mechanism section 16 for weighing the weight of the material to be supplied in the hopper 15, and the pool hopper 14. supporting and lever mechanism 17;
18 and a drive section 19 for opening and closing both hoppers 14 and 15, and is installed in a circular shape on the frame 11 at the lower end of each supply trough 3. Reference numeral 20 denotes a chute whose distal end slightly protrudes from the upper surface of the frame 11 and is supported inside the frame 11. Materials discharged from the weighing hopper 15 of each weighing machine 13 are collected in the chute 20 and placed in a bucket (not shown). is discharged to the conveyor.

In the above configuration, the material to be supplied is supplied onto the dispersion table 1 from a supply device (not shown) located above the dispersion table 1. The above-mentioned supply device is driven by a signal from the light receiver 8' which detects this with the light emitter 8 and the light receiver 8' when the amount of material accumulated on the dispersion table 1 falls below a certain level, and is always kept at a constant level. The above supplies are arranged to accumulate on the distribution table 1. The material to be supplied onto the dispersion table 1 is gradually propelled radially toward the outer circumference from the conical surface of the dispersion table 1, which is undergoing a spiral reciprocating vibration motion, by the centrifugal force caused by the torsional reciprocating vibration of the electromagnetic vibration device 2. An appropriate amount of the liquid is supplied to each supply trough 3, and the supply trough 3 is filled with the deposit.
The material to be supplied into each supply trough 3 is gradually propelled toward the tip in the supply trough 3, which is undergoing an inclined linear reciprocating vibration motion by the linear reciprocating vibration of each electromagnetic vibration device 7, and from the tip. Each pool hopper 1
It will be put into 4. Each supply trough 3 starts vibrating in response to a signal from the weighing machine 13 when the pool hopper 14 discharges the material to be supplied and becomes empty, and a timer provided for each trough 3 causes the vibration to continue for a certain period of time. and the vibration time is 3 for each supply trough.
It may be different each time, or it may be the same time.

On the other hand, the material to be supplied into the pool hopper 14 is further fed into the weighing hopper 15 and weighed by the weighing mechanism section 16, as will be described later. Then, an electronic circuit calculates a combination of the weight values of the objects weighed by each weighing machine 13, and a combination of weights equal to or closest to a predetermined weight is selected, and the weighing hopper 15 corresponding to the combination is selected. Drive section 19
The chute 2 is opened and closed by the lever mechanism 18.
The materials to be supplied are discharged into the tank 0 and collected in a bucket conveyor (not shown). The weighing hopper 15, which has been emptied after the material has been discharged, is filled with the material from the pool hopper 14, which is opened and closed by the drive unit 19 and the lever mechanism 17.
A signal from the weighing machine 13 causes the supply trough 3 to vibrate for a certain period of time based on a timer, and the material to be supplied is thrown into the empty pool hopper 14.
In parallel with the operation of feeding the material into the pool hopper 14 from the supply trough 3, the weighing hopper 15
The material to be fed into the container is weighed, and the combination of each weight value is calculated again to select a combination of weights equal to or closest to a predetermined weight.
After that, repeat the above operation.

In addition, the weighing hopper 15 whose combination was not selected
The material to be supplied inside is not discharged, and its weight value is used again in the next combination calculation. Therefore, the corresponding pool hopper 14 is not opened or closed, and the corresponding supply trough 3 also does not vibrate.

Further, when the combination calculation of the weight values of each weighing machine 13 is completed, the distribution table 1 starts vibrating with the calculation end signal, and stops vibrating with the next combination calculation start signal, that is, during the combination calculation. has stopped vibrating, and when the amount of material accumulated on the dispersion table 1 falls below a certain level, this is detected by the emitter 8 and receiver 8' as described above, and the A supply device (not shown) is also driven by the signal, and the material to be supplied is added onto the distribution table 1.

In the above-mentioned embodiment, a case has been described in which the material to be supplied is distributed and supplied to the weighing hoppers of each weighing machine of a combination calculation type automatic weighing device, but it goes without saying that this invention can also be applied to cases where combination calculation is not performed. Nor.

As explained above, this invention allows the material to be fed into the upper center of the device to be dispersed radially outward from the center, and also to be individually distributed to the weighing machine located below the tip. Since the feed material can be supplied, when the material to be fed is supplied to a weighing machine selected for combination, it is only necessary to vibrate the supply trough corresponding to that weighing machine. Therefore, the object to be supplied is not vibrated excessively, and when a twisted package is used as the object to be supplied, there are no problems such as the wrapping paper unraveling or separation of the wrapping paper and the object. In addition,
As the electromagnetic vibration device, a small and lightweight electromagnetic vibration device is sufficient, and since only the selected supply trough vibrates, the noise caused by the vibration can be reduced compared to the conventional method.

The present invention is characterized in that no shutter device is provided at the end of the supply trough, but if the metering hopper is provided directly at the bottom of the end of the supply trough without a shutter device, there are the following drawbacks. That is, the operation of supplying and stopping the material to be supplied is normally performed by energizing or cutting off the electromagnetic vibration device that vibrates the supply trough. Even if a power-off operation is performed to stop the supply, the supply trough, which does not have a brake device, does not immediately stop the supply operation, and although it is attenuated, the remaining vibration force transfers the supplied material, albeit slightly. Furthermore, even after the supply trough has completely stopped, the material to be supplied continues to accumulate in layers on the trough, and since the end of the trough is open, it is not susceptible to the opening and closing of the hopper, the operation of the conveyor, or any other type of shock or vibration. As a result, the pile of material at the end of the trough collapses and a small amount of material falls into the hopper. And this inconvenience occurs regardless of the passage of time. If the above-mentioned situation occurs, the article will be added during the measurement or after the measurement is completed, and the result of the highly accurate combination measurement of the cutting angle will be wasted.

In order to solve the above-mentioned problems, the present invention temporarily stores the material for next weighing between the supply trough without a shutter device and the weighing hopper.
Furthermore, a pool hopper is installed corresponding to each weighing hopper to catch the supplies falling from the end of the supply trough and to prevent the weighing accuracy from being disturbed.

Another advantage of the pool hopper is that the supply trough has a smaller cross-sectional area for the material transfer passage due to its structure, compared to the ball feeder of the prior art. As a result, it takes time to supply the product. Therefore, in the conventional method of performing combination calculations after supply is completed, the throughput is reduced. However, when a pool hopper is used as in the present invention, the combination calculation is performed immediately after the predetermined stabilization time of the scale has passed, and on the other hand, the article to be weighed next time is supplied to the pool hopper in parallel with this stabilization time and calculation time. Often, the metering cycle can be shortened.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an embodiment of this invention, Fig. 2 is a perspective view of the main part thereof, and Fig. 3 is a sectional view of the main part taken along line A-A in Fig. 1. This is an example of an automatic weighing device to which this is applied. 1... Distributed table, 3... Supply trough, 13
... Weighing machine, 14 ... Pool hopper, 15 ...
Weighing hopper.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A device that distributes the material to be supplied from above the center of the device into multiple routes and supplies it to multiple weighing machines, and also combines the weight of the material weighed by each weighing machine. , a combination calculation type automatic weighing device that finds the optimal combination of weighing machines for a given weight. (2) a dispersion table having a conical inclined surface for dispersing outward from the center; (2) objects arranged radially around the dispersion table and supplied from the dispersion table; A combination calculation type automatic comprising: a plurality of supply troughs adapted to individually supply corresponding weighing machines, and operating one corresponding to the weighing machine selected as the optimum combination. Weighing device. 2. The combination calculation type automatic weighing device according to claim 1, wherein the supply trough is linked to an electromagnetic vibration device whose vibration is individually controlled. 3. The combination calculation type automatic weighing device according to claim 1 or 2, wherein the periphery of the distribution table overlaps the rear end of each supply trough. 4. The utility model according to claim 1 or 2, characterized in that the side wall of the supply trough overlaps the side wall of an adjacent supply trough, so that each supply trough is connected. Combination calculation type automatic weighing device.