JPH08166279A - Combined measuring apparatus - Google Patents

Abstract

PURPOSE: To make a combined measuring apparatus have a small diameter and small size and carry out weight measurement and volume measurement for products having small sizes and shapes. CONSTITUTION: A radial trough 6' to be bridged over from a dispersion table 4 to respective pool hoppers 8 is extended in the tangential direction, and while the diameter being narrowed, the real length is kept long, and respective base parts of load cells 10", 10'" which bridge over respective measuring hoppers 9 are layered vertically to effectively utilize the space in collective way and miniaturize a combined measuring apparatus. After the pool hoppers 8 and measuring hoppers 9 are detached, elevating rods 29 are elevated by a prescribed stroke (h) through a clutch 33 by an elevating board 37 which moves up and down by a driving motor 12' in order to be parted from disks 31, 31' attached to the elevating rods 29 for respective covers 16, 17 and then the outside projected parts of heads 151, 151' are stored in storing notches 2"", 2'"" previously installed in a frame 2'", and thus it is made easy to carry out cleaning, cleansing, and maintenance.

Description

Detailed Description of the Invention

[0001]

[Industrial application] The disclosed technology belongs to the technical field of the structure of a combination weighing device exclusively used for seasonings, small-sized snacks, small products such as small-sized bolts and nuts, etc. .

[0002]

2. Description of the Related Art As is well known, with the prosperity of industry, people's lives have been remarkably improved, and in the distribution market, not only products such as snack foods but also various industrial products are actively traded.

In order to stably trade a product in such a secondary market, it goes without saying that the good quality of the product is maintained, and the trade processing is performed accurately as set. Therefore, it is extremely important not only for the supply side of manufacturers such as manufacturers to maintain the quantity of products as prescribed, but also for the reliability of stores and consumers,
Although there are cases in which volume criteria are used as the criteria for the quantity of merchandise transactions, it is normally weight, and it is preferable that the weight be accurately measured according to the set quantity. Since it is extremely difficult theoretically and mechanically to perform a metric that always agrees with the value as designed, a mathematical theory of statistics and probability and a combination of so-called computer scales based on high-speed computer operations A measuring technique has been devised and developed, for example, as disclosed in the invention of Japanese Patent Laid-Open No. 60-22626, and various improvements have been made and put into practical use in the secondary market.

A so-called combination weighing device 1 which is put into practical use in a weighing system using such a computer is shown in FIGS. 7 and 8 as disclosed in the invention of JP-A-5-162787, for example. Is shown (FIG. 7 shows a schematic mode of a semi-longitudinal sectional view for convenience of illustration), and a dispersion table 4 as a dispersion device is provided in the upper center of the frame 2 as an electromagnetic conical vibration device. Is provided via the three-dimensional vibrating device 5, and the base end of a radiation trough 6 forming a predetermined number-of-heads dispersion device is exposed to the periphery of the three-dimensional vibrating device 5 and fixed radially to the frame 2 via an electromagnetic vibrating device 7. The front end faces the pool hopper 8 of each head that is provided so as to be engageable with and disengageable from the frame 2, and below the pool hopper 8 is a weighing hopper that forms one unit with the pool hopper 8. Of the snack food or the like discharged from the pool hopper 8 which is provided so as to be engageable and disengageable via a bracket 9 ′ attached to the tip of a load cell 10 fixedly mounted on the lower frame 2 ′. A computer 1 that receives a product 100 in a baton-touch manner, weighs the product 100, and arranges the product 100 in a predetermined space such as the frame 2 '.
1, the measured weights of the weighing hoppers 9 of the respective heads are compared and calculated in combination to match the weight value of a predetermined amount, or a combination of weights that slightly exceed as much as possible is calculated and selected. A drive motor 12 'fixed to the frame 2'so as to open the respective lids 17 of the weighing hoppers 9, 9 ... Of the respective heads and discharge the products to the lower collecting hopper 18.
Of the pool hopper 8 and the lids 16 and 17 of the weighing hopper 9 through the opening / closing mechanism 14 and the link mechanism 15 and 15 '.
The product 100 having a quantity weight equal to or less than the set weight of the product 100 continuously or intermittently loaded on the product 100 is discharged to the collecting hopper 18, and the next packaging process is performed. It is supposed to be carried out to the etc.

Further, depending on the design, when a memory hopper (not shown) is provided below, a memory hopper mechanism for operating the memory hopper is provided to reduce the cycle time and perform efficient combination weighing.

Therefore, in the combination weighing 1, it is absolutely necessary to avoid that the quantity is smaller than the set weight value, and too large quantity is not preferable even on the supply side, Even if it is added, even if the plus or minus of the set amount is on the distribution handling side, it is often not preferable, and it is not preferable. Therefore, in reality, it is necessary to measure the amount that slightly exceeds the set weight. The mode in which it is performed is adopted.

[0007]

By the way, as shown in FIG. 8, in the combination weighing device 1, although the above-mentioned predetermined number of heads are provided in a circular array, it is made as compact as possible. , A square hopper 9 and a pool hopper 8 each having a square cross section are arranged along the circumferential direction at the sides thereof for the convenience of various designs, and the load cells 10, 10 ... And the lid opening / closing mechanism 14 is arranged inside.

Normally, the load cell 10 and the opening / closing mechanism 14 are designed to be detachable by a cartridge system as an integrated unit even when a pool hopper, a weighing hopper, and a memory hopper are attached.

[0009] By the way, normally, the manufacturer 10
It is provided to consumers after weighing 0, and it is said that it is desirable for the manufacturer side to use the optimum machine according to the shape of the product to be weighed and packaged and the unit of measurement. Machines sometimes handle different products with different weighing values, so there is plenty of room, and
The machine builder can also respond to slight changes taking these into consideration, and respond by deciding a mass-production type pattern, and the volume of each individual weighing hopper is approximately 1.5 to 2.5 liters, and 10 to 16 The individual formed one weighing machine.

This is a mass-produced, light and bulky snack, suitable for specific vegetables, but also for seasonings, nuts, or small-diameter bolts, nuts, screws, etc. used for electric parts. A small fraction of the conventional scales, which can be installed in a small space, is sufficient for weighing small bags, but it is not produced.
For example, as shown in FIG. 10, a table feeder type capacity measuring device 20 or the like is used, and divider pots 23, 2 are circumferentially fed from a feeder (not shown) via a hopper 22.
3 is provided with a disc-shaped feeder 24 that is recessed, performs a scraping action with the hopper 22 and rotates while filling the divider pot 23 with a predetermined product,
A device mode has been used in which the lid 25 is opened and the lower chute 26 discharges to the next packaging process.

However, in the apparatus mode as shown in FIG. 10, even if the volumetric measurement is performed formally, it is not weighted and it is guaranteed that the bulk specific gravity is kept constant. In addition, there is a drawback that a certain amount of volume cannot be measured due to the bridge phenomenon of the product.

Further, in the above combination weighing device 1, FIG.
As shown in FIG. 4, the weighing hopper 9 having a rectangular cross section uniquely determines the diameter and size of the device, and as long as the distance between the weighing hoppers 9 is reduced to the adjacent state as much as possible, Since there is a limit to how small the diameter can be reduced, and the number of heads is usually ⁿ , the number of combinations is 2 ⁿ , so that the number of combinations is selected. Therefore, the device size can be reduced. Therefore, reducing the number of heads leads to a reduction in the number of combinations, leading to a negative point of reducing the original function of the computer scale and the goodness of accuracy, and as shown in FIG. Hopper 8 or
Even if the number of heads in the circumferential direction of the weighing hopper 9 is reduced and the device diameter is reduced to promote compactness, the radiation provided between the dispersion table 4 as the dispersion supply device 3 and the pool hopper 8 is provided. The length of the trough 6 cannot be taken sufficiently, so that there is a problem that it is difficult to stably and uniformly supply the commodities 100 from the distribution table 4 to the pool hoppers 8 of the corresponding heads.

Therefore, the actual number of combinations was 2 ^{12 for} 12 heads and 2 ⁸ for 8 heads (actually 2 ¹² -1, or 2 ⁸ -1). .

Recently, 16 heads are used, and this is the right half.
It has become extremely common to configure two sets of units with 8 scales and 8 memories in the left half, and perform two combination weighings at the same time.

This is because, as shown in FIG. 8, the load cells 10 on which the respective weighing hoppers 9 are detachably mounted are arranged in the radial direction from the center side of the apparatus. There is a disadvantage that the inner base ends of 10, 10, ... become congested and interfere with each other in the circumferential direction, and the wiring of the lead wire for weight detection becomes extremely difficult. Maintenance, inspection, maintenance, etc. In that case, there is a disadvantage that work will be difficult.

Since there is such a problem, the hopper size, etc. are determined so as to prevent the problem from being dealt with, and the problem is usually solved appropriately, but the problem is still basically solved. It has not been done.

As shown in FIG. 7, this is solved by the ordinary weighing machine as described above even if the load cells 10 are arranged inside the respective weighing hoppers 9 along the circumferential direction. However, there was also a big disadvantage that also hindered compactness.

Therefore, even if it is attempted to use the excellent points of combined weighing for the volume weighing and the weight weighing of the above-mentioned small articles, it cannot be actually done, and in reality, there is a possibility that each component of the apparatus can be miniaturized as much as possible. However, it is not practically available and is being carried out exceptionally, but despite the fact that there is significant potential demand in practice, it is an average usage mode heavy and large combination weighing device There is a problem in that it is inevitable to use this even though it can be used for a small amount.

Thus, for example, in a product processing facility such as a maker or a supermarket, not only block-shaped products such as potato chips and snacks, but also powdered granules such as seasonings, candy, nuts, etc. bolt·
There is a strong potential demand for elastically using combination weighing of small-sized small products such as nuts for weight weighing and capacity weighing. On the manufacturing side of combination weighing equipment, there is a strong average demand. (The hopper capacity is usually 2 liters, and some of them are even larger.) There is a tendency to unilaterally supply large-sized and medium-sized combined weighing devices unilaterally, and supply that matches the demand of the real economy. The reality was that we could not do so and we had to adopt a system that could not cooperate with the stable operation of the market.

Further, a lid opening / closing mechanism 14 for the lids 16 and 17 of the pool hopper 8 and the weighing hopper 9 is provided corresponding to each head, and furthermore, the inside (outside) of each pool hopper 8 and the weighing hopper 9 is provided. Since it is arranged by using space, it becomes extremely mechanically complicated, including the link mechanisms 15 and 15 ', and the mutual interaction has a design interference.
Although not only the initial assembly, but it has been solved in general, maintenance work such as maintenance, inspection, and maintenance is also extremely troublesome, and vibration during operation is likely to occur, which may cause troubles in each minute mechanism. However, there is a tendency that it causes an undesired point such as deterioration of the working environment due to easy noise.

Further, as shown in FIG. 8, in the combination weighing device 1 in which the heads are circularly arranged, the circumferential arrangement of the pool hopper 8 and the weighing hopper 9 in the circumferential portion is relatively flexible. Regardless (the posture along the circumferential direction of the hopper, or
(Selective degrees of freedom such as the posture along the radial direction), and regarding the space utilization inside thereof, the complexity of the circumferential arrangement in the radial set posture of the load cell 10, the lid opening / closing mechanism 14, or FIG. Similarly, the motor 12 'of the drive source (it is difficult to make it as small as possible is difficult in terms of design.), Etc., it is extremely difficult to deal with it, and it is extremely difficult to design, and it is also suitable for routing cables, etc. Computer 1
However, there is a bitter point that an unreasonable design is forced in terms of wiring resistance and the like for 1 (for this reason, some weighing units are grouped into one set and the whole attachment / detachment is a cartridge type).

Since these mechanisms are arranged independently of each other, they have the advantage that they can be industrialized and do not impose a large cost burden, but assembly and maintenance inspection are complicated. It was a thing.

[0023]

OBJECT OF THE INVENTION The object of the invention of this application is a circular array of a certain number of heads, which potentially possesses the advantages of the computer scale according to the prior art mentioned above, but lacks the elastic usability for small goods. The technical problems that should be solved for the inherent compactness of the combination weighing device are to be solved, and while taking full advantage of the combination weighing, compactness can be achieved reliably, downsizing is promoted, and operation is quiet. An excellent combination weighing device that can be reliably and reliably performed, is easy to maintain, can be manufactured at low cost, is easy to manage, and has good durability. It is intended to be provided.

[0024]

In order to solve the above-mentioned problems, the structure of the invention of the present application, which is based on the above-mentioned claims, has a small capacity for distribution in a manufacturer or a supermarket. It is a product that does not require a large hopper volume for the product and is made into a hopper weighing machine of a suitable capacity, and is a small size product of powdered granules such as seasonings and small industrial products such as bolts and nuts. In order to perform a predetermined weight measurement combination weighing with a predetermined number of heads in a circular array combination weighing device, in order to use a predetermined number of heads in a circular array mechanism, it is of course desirable that the indispensable load cell be small, but simply It is not just a small size, but there are restrictions in terms of output accuracy and reproducibility, and even if a small size is used within the range of availability that meets the above conditions at present, In the mode in which the dosels are arranged radially on the same plane, the other parts are affected, and because it cannot be miniaturized, there are two upper and lower stages, and the size of the load cell mounting part at the center is reduced. The base side is centrally placed in a stack in the upper and lower parts in a centralized manner and is installed in a cantilevered manner as usual on the frame, and the weighing hopper is detachably mounted on the tip of the lower load cell as an overhang. At the tip of the upper load cell, a corresponding weighing hopper is also removably mounted like an underhang, and a ball screw, etc. is installed in the center of the device frame, which also functions as a dustproof cover. Is provided by an air cylinder or the like, and an elevating plate is provided on the upper part of the elevating plate so that the elevating plate can be moved up and down by a predetermined stroke. A clutch or the like is detachably installed on the elevator board so as to be engageable with and disengageable from the elevator board, and each weighing hopper provided at the tip of each load cell centrally provided and installed above the weighing hopper. The link mechanism for each lid of the pool hopper is releasably linked to the engaging portion of the elevating rod via a clutch or the like, and the elevating rod is in the neutral position and the rod moves up to the neutral position to release the clutch. Also, in the lowering operation, the clutch is turned on and the lowering is performed, for example, the product is discharged, and the combination is repeatedly supplied and discharged so as to return to the neutral and the lid is in the closed posture. (The elevator always goes up and down according to its weighing cycle, and when it stops,
In addition, the lifting and lowering are repeated, and when the hoppers to be combined are opened and closed, the lifting rod is actuated by a clutch in response to a command from a computer, whereby the lifting rod itself is lifted to insert and discharge the product). When the lifting rod is subjected to a predetermined combination calculation and the selection of a predetermined head combination is determined, the lifting rod of the head is integrally connected to the lifting plate via a computer to move up and down, and in the lifting process, the lid of the weighing hopper is linked. Through which the merchandise of choice is discharged to the collecting hopper, during which the links of the lid of the pool hopper do not work, while in the lowering process the opening and closing links of the pool hopper are linked to the lifting rod and The lid is opened, and the products stored therein are discharged from the pool hopper to the weighing hopper, and the lid of the weighing hopper keeps the closed posture, and When the lifting rod of the head, which was involved in the selection of the combination weighing, was lifted up and down integrally with the lifting plate of the head, the lids of the pool hopper and the weighing hopper were opened and closed in a repulsive manner, and the lifting rods of the other heads did not work. Therefore, the lids of the pool hoppers and weighing hoppers are not opened and closed, and the lids of the pool hoppers and weighing hoppers are opened and closed quietly without causing vibration or noise, and after the completion of the combination weighing. In order to clean the weighing machine, the pool hopper and the weighing hopper are detached and removed from the open / close link mechanism for each head to be cleaned individually, and the lifting rod is lowered by a predetermined stroke to remove it from the open / close link mechanism. Each head is released (free), and the link on the hopper side of each head is housed in the recess provided in the frame in advance to reduce the protrusion of the surface and shorten the cleaning time. As described above, the pool hopper and the weighing hopper can be easily detached from the frame and the load cell, and then cleaning work such as predetermined washing can be smoothly performed. The set and reset work for the frame of the hopper is also carried out smoothly with one touch, whereupon the elevating rod is again raised by a predetermined stroke and reset, and is engaged with the lid opening / closing link of the pool hopper and the weighing hopper, and the predetermined combination is performed. Weighing is always stable and quiet, and maintenance, inspection, and maintenance are performed smoothly, and the diameters of pool hoppers and weighing hoppers are reduced by the densely arranged upper and lower stacked layers on the base side of the load cell. The radiation trough of the dispersion device is tangential to the head from the dispersion table while achieving downsizing through placement and downsizing. It is installed in the direction toward the pool hopper, and normally only short ones can be attached, but the actual length is made longer so that feeding by vibration can be performed uniformly and stably without any hindrance.
Combined weighing of small products such as powder and granules and small sized industrial products, and weigh the products that had been volume-measured. The measurement is reproducible and highly efficient, the initial cost as well as the running cost are low, the work is performed safely with sufficient durability, and there is no interference with peripheral devices. , It is a technical measure that can be installed together with a large size combination weighing device.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

Incidentally, the portions having the same modes as those in FIG. 7 and subsequent figures will be explained using the same reference numerals.

The illustrated embodiment is an embodiment used for combination weighing of powdery and granular foods such as seasonings in a product manufacturer and the like, and in FIG. Like the embodiment shown in FIG. 7, for convenience of illustration, the semi-longitudinal sectional view is shown only on the right side. 1'is a combination weighing device in which a set number of heads form a circular array, which is the gist of the invention of this application. , A dustproof cover 13 ′ (from the frame 2 provided on the inner side is attached to the mounting bracket (for detecting the weight by the load cell 10 ″ supporting the weighing hopper on the outer periphery of the frame containing the driving device rather than the dustproof cover ( (Not particularly emphasized in the manual) has an opening for penetration, and since this part moves up and down, a diaphragm 13 '' is attached to block the inside and outside and to prevent dust.)) It is hung in the shape of A dispersion table 4 as a dispersion supply device 3 is integrally fixed to the central portion of 2 through an electromagnetic vibration device 5 of a helical vibration device in the same manner as in the conventional mode. As shown in FIG. 2, a predetermined number of heads (12 heads in this embodiment) and radiation troughs 6 ′, 6 ′, which also constitute a dispersion supply device, are arranged along the tangential direction of the dispersion table 4 at their bases. As described above, the heads are continuously provided with a sufficient length, and their tips are exposed to the pool hoppers 8 of the respective heads. In the embodiment shown in FIG. 1, it is apparently short, but actually shown in FIG. Similarly, the radiation troughs 6, 6 ... Of the same length as the conventional mode (or actually need more) are formed.

Therefore, also from this point, the diameter size of the combination weighing device 1'of the invention of this application in the embodiment is sufficiently reduced, and for example, in the actual design, the diameter size is considerably reduced. Although the pool hopper 8 and the weighing hopper 9 below the pool hopper 8 are also rectangular in cross section, the volume thereof is small and the weight of the granulated food such as seasonings is substantially small. The pool hoppers 8 and 8 ... and the weighing hoppers 9,
As for 9 ..., as shown in the said FIG. 2, it is possible to make an inner corner part as close as possible.

Then, it is desired to make the entire weighing machine as small as possible, but to increase the volume of each hopper,
Further, if they are brought too close to each other, it is necessary to make some contact for opening and closing the lid, and to adjust a defect.

As shown in FIGS. 1, 3 and 4, the load cells 10 '', 10 '''in the inner circumferential direction of each head are integrally layered vertically near the base end. In the embodiment shown in the figure, six are arranged in the radial direction so as to extend in the radial direction, respectively, and the upper load cells 10 ″, 10 ″ and the lower load cells 10 ″ ′, 10 ″ ′ ... At the base, the inner corners of each device are densely aggregated so that they are vertically adjacent to each other, and a few sheets of paper are separated (not in contact with each other). As shown in the figure, at the corners on the base side, the ', 10''s have a substantially triangular overlapping portion 14 'formed on the upper and lower sides thereof, and are formed in a collective multi-layered form in the central portion of the device. Therefore, they are arranged closely in a centralized manner without any interference with each other in the circumferential direction, and the corresponding weighing hoppers 9 are attached to the respective tip portions. Wearing bracket 27, 27 '
Thus, it can be detachably mounted in an overhang shape or an underhang shape.

Therefore, in each weighing hopper 9, a diaphragm 13 '' is provided so as not to interfere with the weight measurement of the load cells 10 '' and 10 '''. The structure is such that the bracket penetrates and there is almost no vertical movement resistance. Otherwise, a measurement error will occur, and the edge is cut off by the corresponding load cell 10 '', 10 '''with a stable posture and a cantilever type. The weight of the load cell is surely transmitted to the load cell so that the weight detection function inherent in the load cell can be exerted.

Therefore, each load cell 10 ", 10 '"
In this case, the radiation trough 6'is designed to cooperate with the size reduction, and the pool hoppers 8 having a circumferential arrangement,
8 and the weighing hoppers 9 and 9 are arranged adjacent to each other as much as possible to reduce the diameter of the device, while ensuring the original distribution function and weighing function of the product. Therefore, even if the space in each head is dense, effective utilization is sufficiently achieved.

Next, in the invention of this application, the opening / closing mechanism for the lids 16 and 17 of the pool hoppers 8 and the weighing hoppers 9 is the lid mechanism 14 as shown in FIG. 7 of the prior art.
In order to effectively utilize the narrow space in each of the above heads by adopting a lifting rod system, as shown in FIGS. The screw 28 'of the ball screw, which communicates with the coupling 13' via the drive motor 12 'such as a pulse motor on the lower side of the central portion of the side frame 2', is the center of the lift plate 37 in the middle of the frames 2, 2 '. The nut 28 ″ fixed to the portion is screwed, and the rotation of the nut 28 ″ allows the lifting plate 37 to move upward, neutral, and downward by a predetermined stroke H.

The drive motor 12 'is the computer 11
When the load cells 10 ″, 10 ′ ″ of the respective heads detect the weight of the product 100 in the weighing hopper 9 and the detection signal is input, during operation, a predetermined interval including a predetermined stop time is determined. In this case, the open / close signal of the lid 17 of the weighing hopper 9 which is the object of the combination is transmitted to the solenoid 32 at all times, and thereby the elevator board 3 is rotated.
7, the lifting rod 29 is moved up and down by the stroke H shown in FIG.

On the outer peripheral portion of the lift plate 37, lift rods 29 corresponding to the respective heads are mounted via slide ball bearings 30 so that they can slide up and down.
At the lower end thereof, the slide ball bearing 37 'of the frame 2'is idled.

The heads 151 and 151 'of the opening / closing link mechanisms 15 and 15' for the lids 16 and 17 of the pool hopper 8 and the weighing hopper 9 are located above and below the lifting plate 37 of the lifting rod 29. Discs 31 and 31 'which control the pressing action from the upper side and the lower side are integrally fixed, and the opening and closing link mechanisms 15 and 15' move the respective lids 16 and 17 to raise, neutral and lower the elevator plate 37. The commodities 100 stored by opening and closing in a predetermined manner can be discharged downward via the.

The upper disk 31 is pressed against the head 151 of the opening / closing link mechanism 15 of the pool hopper 8 from the upper side, and the lower disk 31 'is the head of the opening / closing link mechanism 15' of the weighing hopper 9. 151 'is pushed and lifted from below.

A storage notch 2 '''' when the lid 16 'of the pool hopper 8 is opened is formed in the frame 2''' attached to the lifting rod 29.

In addition, a notch 29 'is recessed at a predetermined lower position of the lifting plate 37 of the lifting rod 29, and a solenoid 32 is provided below the lifting plate 37 correspondingly. Is electrically connected to the computer 11 and its clutch claw 33 is provided so as to engage with and disengage from the notch 29 ', and the solenoid 32 is operated by an operation signal selected for combination weighing by a signal from the computer 11. Then, the lifting rod 29 is integrated with the lifting plate 37, and the lifting plate 37 is lifted up and down by a stroke of H, and in the stroke H for one step lifting, the lower stroke of the lower disk 31 is first shown in FIG. 'Ascends to the positions shown in (d) to (e) of FIG. 6 and the head 151' of the opening / closing link mechanism 15 '.
Is lifted and swung to open the lid 17 of the weighing hopper 9 through the opening / closing link mechanism 15 ', and the merchandise 100, which has participated in the selection of the weighed combination, is dropped onto the lower collecting chute 18, and then, In the downward stroke to the neutral position, the opening / closing link 15 'of the weighing hopper 9 returns to the initial posture via the spring (not shown), while the disc 31 at the upper end corresponds to the strokes (a) to (b) in FIG. And the head 151 of the opening / closing link mechanism 15 is lowered by the strokes (a) to (b) and swung,
The lid 16 is opened via the open / close link mechanism 15, and the product 100 held in the pool hopper 8 in the waiting posture in the open state is discharged into the lower weighing hopper 9.

Then, in the process of ascending from the descending stroke end, the opening / closing link mechanism 15 returns the lid 16 to the original closed state by a spring (not shown).

Therefore, the weighing product 10 of the weighing hopper 9
It is ensured that the lid 16 of the pool hopper 8 is not opened before the discharge of 0 is completed and before it is closed.

In the above process, the solenoid 3 is attached to each head each time the heads are combined and weighed.
2 is activated, the lid 17 of the weighing hopper 9 is opened, and
Following this, the lids 16 of the pool hoppers 8 are opened independently of each other in a cycle.

Of course, for the head which is not used for the combination weighing, the solenoid 32 via the computer 11 is used.
Therefore, the elevating rod 29 is in a stopped state, and only slides relative to each other through the elevating plate 37, the upper ball bearing 30 and the lower ball bearing 37 '.

In this way, the small-sized small commodity 100, which is loaded into the dispersion table 4 of the dispersion supply device 3 through the electromagnetic feeder (not shown), is supplied from the pool hopper 8 to the weighing hopper 9 through the radiation trough 6 '. The merchandise 100, which has been subjected to a predetermined combination weighing and has participated in the selection of the combination weighing, is equal to the predetermined weight value or slightly overloaded as much as possible. It will be discharged.

When the work of the day is over and the weighing work is finished, the drive motor 12 'is stopped to remove the pool hopper 8 and the weighing hopper 9 for cleaning work. , Press the confirmation button at the same time.

Then, a new signal causes the drive motor 12 'to rotate in a predetermined manner via the computer 11 to move the rod 29 through the lifting ball screw 28' and the nut 28 ''.
(H <h), and at this time, the disk 31 at the upper end of the lifting rod 29 descends from the positions (a) to (b) to (c), so that the head 151 of the opening / closing link mechanism 15 is As shown by the dotted line in FIG. 6, the disc 31 can be disengaged and swiveled, and the lower disc 31 'can also travel from position (e) to position (d) to (f) for h minutes. Since it is located below the head 151 ′ of the opening / closing link mechanism 15 ′, the engagement with the head 151 ′ is released, and the heads 151 and 1
51 'becomes a state in which it can freely swing, and the head 151 and the disk 31 in FIG. 6 come off at the position of (c) from the steady measurement state of the operation, and the link (directly opening and closing the lid body) of the head 151 on the hopper side. Minute) pushes that portion into the notch 2 ″ ″ provided in advance in the frame 2 ″ ″ to eliminate the surface protrusion and facilitate cleaning, and the internal head 151 and the disk 31 are as described above. Only then will it be possible.

The same applies to the head 151 'on the weighing hopper 9 side.

Then, the cleaning operation is performed with a predetermined wet cloth, maintenance such as a predetermined internal inspection is performed, and after the work is completed, the elevating rod 29 is lowered by h, so that the pool hopper 8 and , One-touch re-engagement of the frames 2, 2 '"of the weighing hopper 9 and the load cells 10", 10'"via the hangers 8 ', 27, 27' is smoothly performed, and thereafter, Through the reverse rotation of the drive motor 12 ', the elevating rod 29 is raised by the amount of h to be in the reset state.

It should be noted that the parts of the heads 151 and 151 'that are exposed to the outside are simply pushed into recesses provided on the outer peripheral surface thereof, and the attachment and removal of the hoppers 8 and 9 are not directly related.

At that time, since the lower disk 31 'is below the head 151' of the opening / closing link mechanism 15 ', there is no hindrance to its ascent, and the upper disk 31 has a pool to be set. Opening / closing link mechanism 15 of the hopper 8
Since the head 151 of is automatically engaged so as to be positioned on the upper side, the head 151 also rises from the lower side without any trouble.

Thus, the head 151 and the disk 3 shown in FIG.
When 1 is disengaged at the position of (c), the link on the hopper side of the head 151 (the amount that directly opens and closes the lid) pushes that part into the notch 2 '''' provided in advance on the frame 2 '''' and the surface The internal head 151 can be easily cleaned by eliminating the protrusion of the
Only then can the disc 31 be as described.

The same applies to the head 151 'and the notch 2''''' on the weighing hopper 9 side.

Of course, the embodiment of the invention of this application is not limited to the above-mentioned embodiment. For example, for raising and lowering the set / reset stroke h of the raising / lowering rod, a manual lever may be used instead. Three
It is possible to employ various modes such as reverse operation of 1,31 'and heads 151, 151' in the same manner.

Further, in order to operate the pool hopper 8 and the weighing hopper 9 at individual timings, an elevating rod 29 is provided for each of them, and the elevating speed of the elevating rod 29 is not constant but the lid body 16, The angular velocity of opening / closing 17 can be changed so as to be optimum, or can be performed by a program as needed.

Needless to say, the present invention can be applied not only to a new small-sized combination weighing device, but also to conventional large-sized and medium-sized combination weighing devices.

Regarding the processed products, not only block-shaped products such as snacks and powdered products, but also bolts and
It is also applicable to industrial products such as metal products such as nuts.

The above embodiment is a mode of novel combination weighing for foods such as powders such as seasonings, granules, granules, etc., which is shown in FIG. 10 as a kind of volume weighing. The table feeder type of volume measurement can be applied to the weight measurement method depending on the object, and a more accurately measured product can be provided.

[0058]

As described above, according to the invention of the present application, a device having a circular array of a predetermined number of heads, which is used for combination weighing, which basically uses a rapid calculation function of a computer based on mathematical statistics and theory of probability, is used. Therefore, while making full use of the original merit of combination weighing, not only block-shaped products such as small and irregular shaped snacks, but also seasonings ((glutamine soda (Ajinomoto) and other granular products, nuts, etc. ), Etc., and small metal items such as bolts and nuts, etc. can be downsized and made compact so that combination weighing with a kind of small capacity weighing function can be performed. It does not require a large space or a large area in a weighing facility such as a product manufacturer, has little interference with various surrounding facilities, and it is not only required for initial installation but also for maintenance such as cleaning, maintenance, inspection and replacement. It has an excellent effect that it is easy to operate, it can work safely, it produces less vibration and noise, it is environmentally friendly, it has good durability, and it can reliably perform combined weight measurement with originally good reproducibility. To be done.

Thus, the pool hopper and the weighing hopper can be used to perform small-scale weighing and capacity weighing even though the combination weighing apparatus has a pool hopper having a predetermined number of heads and a circular array of weighing hoppers provided below the pool hopper. It is possible to install radial load cells in the actual length of the radial trough and in the internal space while reducing the capacity of the system and shortening the length of the circumferential array, and it becomes possible to install densely at the base of the load cell. It has an effect that the internal space can be effectively measured without causing any mutual interference, and the original combination weighing function can be sufficiently exerted.

The application of the invention of this application is designed even if the lid of the pool hopper is of a twin type, the weighing hopper installed below the pool hopper is open / closed inside or outside, or a memory hopper is additionally provided. Is possible,
A variety of large and medium (medium) size devices can be provided to increase the user's freedom of choice, allowing flexible use in the secondary market, and providing sufficient merit for product sorting and handling. The effect is also produced.

Since not only weight measurement but also volume measurement conventionally used can be switched to weight measurement, it is possible to enrich the variety of usage modes. The excellent effect of promoting versatility of use is exhibited.

By opening / closing the opening / closing lids of the pool hoppers and the weighing hoppers on the elevator board via the elevator rods, the overall operation of the apparatus can be performed in a balanced manner, and the bias load partially acts. Therefore, vibration and noise are suppressed as much as possible, and there is an effect that quiet work can be maintained.

Further, since the lifting rod for each head can operate integrally with the elevator through the clutch, the raising and lowering processes of the elevator rod can be effectively utilized for the elevator, and the pool hopper and the weighing hopper can be used. The lids can perform mutually repulsive selective movements, the movements are reliable, the strokes can be effectively used, and unnecessary power is not required.

Since the lids of the pool hopper and the weighing hopper are opened and closed by the elevating rod through the elevating plate, each pool is simply disengaged from the opening / closing link of the elevating rod. The hopper and the weighing hopper can be detached from the apparatus frame with one touch, and an excellent effect that maintenance such as cleaning can be performed very easily and safely and smoothly can be achieved.

Such ease of maintenance also leads to an improvement in the durability of the device, which has the effect of reducing the cost.

[Brief description of drawings]

FIG. 1 is an overall schematic partial vertical sectional view of the one embodiment.

FIG. 2 is a partial schematic enlarged plan view of a dispersion device.

FIG. 3 is a schematic enlarged plan view of an engagement portion of a weighing hopper and a load cell.

FIG. 4 is a schematic side view of the connection of the load cell with the weighing hopper.

FIG. 5 is a partial cross-sectional side view of an ascending / descending plate and an ascending / descending rod.

FIG. 6 is an enlarged view of a partial cross section of the ascending / descending rod, the pool hopper, and the weighing hopper.

FIG. 7 is a semi-longitudinal side view of a general aspect combination weighing.

FIG. 8 is a schematic plan view of the internal mechanism of the head.

FIG. 9 is a schematic plan view of a partial arrangement of a dispersing device, a pool hopper of each head, and a weighing hopper.

FIG. 10 is a schematic perspective view of a conventional table feeder type capacity measuring device.

[Explanation of symbols]

 2, 2 ', 2' '' Frame 3 Dispersion feeder 8 Pool hopper 9 Weighing hopper 16, 17 Lid 14 Lid opening / closing mechanism 18 Collecting chute 10, 10 ', 10' ', 10' '' Load cell 10 '' Upper load cell 10 '' 'Lower load cell 12' Drive device 37 Elevating board 29 Elevating rod 33 Clutch 15, 15 'Open / close link mechanism 4 Dispersion table 6'Radiation trough

Claims (7)

[Claims] 1. A lid for a unit comprising an upper pool hopper having a predetermined number of heads provided around a dispersing device on an upper part of a frame, and a lower design quantity hopper installed on a load cell below the upper pool hopper. In a combination weighing device in which body actuating devices are internally provided and a collecting chute is arranged below them, load cells for mounting the above-mentioned weighing hoppers are closely arranged in the center of the frame and arranged adjacently. A combination weighing device characterized in that 2. The load cells of half the number of units are arranged on the upper side in a radial manner with their bases being close to each other, and the load cells of the other half are less than the load cells of the upper half number. The combination weighing device according to claim 1, characterized in that the base portions are arranged in a stacked structure in a range that does not interfere with weighing in the vertical direction. 3. Half of the number of units of the weighing hopper is mounted on the upper load cell group, and half of the number of other units of the weighing hopper is mounted on the lower load cell group. The combination weighing device according to claim 2. 4. The lid actuating device is linked to an elevating plate supported by a frame, and an elevating rod for each unit inserted in the frame is linked to the elevating plate via a clutch. The combination weighing device according to claim 1, wherein 5. The combination weighing device according to claim 5, wherein the elevating rod is set and reset freely with respect to the elevating plate. 6. A radiation trough from a dispersion table of the dispersion device is provided to a pool hopper of each unit in a tangential direction from the dispersion table or in a direction close to the tangential direction. The combination weighing device according to claim 1. 7. A dustproof cover provided with a notch for accommodating an operating head at the time of cleaning on the outer side of the elevating rod and the elevating plate is also surrounded by a frame. The combination weighing device according to the item.