JP2001349768A - Combined measuring instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the contamination of dirt and dust, and facilitate interior inspection. SOLUTION: A measured object is fed into a dispersion part 3 in an upper central part of this instrument, and the object is conveyed to plural radial directions by a conveying part 4. Plural memory hoppers 7, measuring hoppers 8 and memory hoppers 9 are arranged vertically in the directions to form lines. The vertical lines are channels and a cover 20 is detachably attached to the each channel. An upper face part 20a of the cover 20 is extended up to a half part of the conveying part 4, and its front face part 20b has a prescribed length to allow covering along the each hoppers 7, 8, 9, and a sideface part 20c covers each side face. A locking part 21 for conduct locking to upper end edges 7c, 9c of the hoppers 7, 9 is provided in the cover 20 to facilitate attaching and detaching for the cover 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combination weighing device capable of weighing and discharging an object to be weighed to a predetermined mass in order to package the object to be weighed such as food in a container or a predetermined mass. In particular, the present invention relates to a combination weighing device that can prevent foreign matter, dust, and the like from being mixed into an object to be weighed.

[0002]

2. Description of the Related Art Generally, in a packaging process of a food production line,
2. Description of the Related Art A combination weighing apparatus capable of weighing and discharging articles by a predetermined mass has been used for bagging food with a fine unit of mass. FIG. 8 is a side view showing the combination weighing device. As shown in the figure, the combination weighing device 50 includes a supply unit 51 for supplying and radially dispersing articles, a plurality of circumferentially arranged stock hoppers 52, and a plurality of weighing hoppers 53 provided below the stock hopper 52. And a funnel-shaped collecting chute 54 provided below the weighing hopper 53.
have. These parts are arranged on the side part of the main body part 55 at the center.

[0003] A supply section 51 radially disperses and supplies an object to be weighed placed at a central position of a weighing hopper 52 arranged circumferentially as viewed on a plane. This supply unit 51
Is provided with a conical dispersion section 51a and a transport section 51b for transporting the dispersed objects to be weighed to the stock hopper 52. The transport section 51b is composed of a transport trough 41c having both sides erected, and a driving unit 51d that vibrates the transport trough 41c to transport an object to be weighed. The objects to be weighed are dropped into the respective weighing hoppers 53 by approximately the same amount via the stock hoppers 52 provided on the respective weighing hoppers 53, and the masses are respectively measured. The weighing values of the plurality of weighing hoppers 53 usually have some variation. Therefore, a desired mass value is obtained by appropriately combining the plurality of measurement values obtained by the plurality of measurement hoppers 53. A plurality of weighing hoppers 53 having such a combination are selected and operated to collect the objects to be weighed into the collecting chutes 54.
Let it fall.

There is an opening at the lowest part of the collecting chute 54, and the objects dropped from the plurality of weighing hoppers 53 gather here and fall downward. Normally, a device for packaging an object to be weighed is provided below the opening of the collecting chute 54. For example, if a bag-filling device is arranged, an object to be weighed having a predetermined mass can be packed in a bag.

[0005]

In the combination weighing device having the above-mentioned structure, dust and dirt are not mixed in from the outside until the object to be weighed after being supplied to the supply section 51 is discharged from the collecting chute 54. It is desirable. Particularly, when the object to be weighed is food, there is a strong demand. In a conventional combination weighing device, a plurality of uprights is installed so as to cover the outer peripheral surface of the device in order to prevent the entry of dust and the like. In addition, in order to stand and hold the uprights, a plurality of support columns for supporting the uprights must be provided on the outer periphery of the apparatus, and when the uprights are installed, the space of the entire apparatus becomes large. At the same time, since the uprights are large and heavy, it takes time to remove and attach the uprights during internal inspection such as cleaning of each hopper.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its object to provide a combination weighing device that can prevent dust and dirt from entering and can easily perform an internal inspection.

[0007]

In order to achieve the above object, a combination weighing apparatus according to the present invention has a dispersed supply unit for dispersing an object to be weighed and a plurality of channels in the dispersion direction of the dispersion supply unit. A plurality of hoppers for storing, weighing, and selectively dropping and discharging the objects to be weighed by a predetermined amount in each channel, and disposed below the hoppers of the respective channels to collect the discharged objects to be weighed. A combination means for selecting and combining a plurality of hoppers based on the weighed value to obtain an object to be weighed having a predetermined mass. The hopper is provided with a detachable cover.

[0008] Further, the present invention provides,
A dispersion supply unit (2) for dispersing and supplying the objects to be measured around the dispersion supply unit; a plurality of channels arranged circumferentially around the dispersion supply unit; And a plurality of hoppers (7, 8, 9) for selectively dropping and discharging, and a collecting chute (10) disposed below the hopper of each channel and collecting and discharging the discharged objects to be weighed. A combination weighing device having a predetermined mass by selecting and combining a plurality of hoppers based on weighed values, wherein a cover detachable to the hopper in at least one vertical unit constituting each of the channels; (20) is provided.

According to a third aspect of the present invention, on the cover (20), a locking piece (21) that can be locked to an upper end edge (7c, 9c) of an input port of the hopper (7, 9). May be provided.

[0010] Further, as set forth in claim 4, a substantially circular mortar-shaped main body which is provided in the center of the device and has a side surface on which the hoppers (7, 8, 9) of the respective channels are attached is inclined downward toward the inside of the device. The cover (20) has a side surface (20c) which is inclined inwardly toward the inside of the apparatus in accordance with the inclination of each hopper (7, 8, 9) attached to the main body. It is good also as composition.

According to a fifth aspect of the present invention, the cover (20) moves to a position where the cover (20) does not come into contact with the object to be weighed on the basis of a position where the object to be weighed is loaded into the dispersion supply section (2) and a loading height. A configuration having an upper surface portion (20a) formed so as to extend in the interior direction of the device may be employed.

According to the above configuration, the hoppers 7, 8, and 9 are provided vertically on the side of the main body 15 of the apparatus for each channel. Cover 2 at least for each series of this vertical channel
0 is detachable. Locking piece 2 provided on cover 20
Reference numeral 1 can be freely locked to the upper end edges 7c, 9c of the input ports of the hoppers 7, 9, and can maintain the attached state, and can be easily removed.

[0013]

An embodiment of the present invention will be described with reference to the drawings. 1 is a perspective view showing the combination weighing device 1, FIG. 2 is a plan view thereof, and FIG. 3 is a side view thereof. At the center of the upper part of the combination weighing device 1 and immediately below the position where the articles are charged, a dispersion supply unit 2 is provided. The dispersion supply unit 2 is roughly composed of a dispersion unit 3 and a transport trough 4.

The dispersing section 3 is formed in a flat conical shape with the center protruding upward, and has a driving means for rotating the dispersing section downward. A supply unit (not shown) supplies the objects to be weighed onto the dispersing unit 3, so that a large number of objects to be weighed are constantly stacked on the dispersing unit 3, and the objects to be weighed are evenly spilled around by the rotation and supplied Is done.

Around the dispersion section 3, a plurality of transport troughs 4 are provided in a radial arrangement. Each transport trough 4
Has a linear transport path, and is provided with a driving means for reciprocating and linearly moving at a lower portion thereof. Each transport trough 4
They are arranged in an annular shape at equal angular intervals in the circumferential direction around the dispersion supply unit 2. Therefore, the objects to be weighed supplied to the respective transport troughs 4 are transported toward the outside of the arrangement by the driving of the driving means.

The outer end of the outer side of each transport trough 4 is in an open state, from which an object to be weighed falls. A stock hopper 7 is arranged below the outer end of each transport trough 4. That is, a plurality of stock hoppers 7 of the same number as the transport troughs 4 are circumferentially arranged at equal intervals.
Each stock hopper 7 is a box with an open upper surface, and an openable and closable discharge door 7a is attached to the lower surface.

Below each stock hopper 7, a weighing hopper 8 is arranged. That is, a plurality of weighing hoppers 8 of the same number as the stock hoppers 7 are circumferentially arranged at equal intervals. The weighing hopper 8 is a box with an open upper surface, and an openable and closable discharge door 8a is attached to the lower surface. The weighing hopper 8 measures the mass of the object stored inside by the weighing means inside the main body.

Below each weighing hopper 8, a memory hopper 9 is arranged. That is, a plurality of memory hoppers 9 of the same number as the weighing hoppers 8 are circumferentially arranged at equal intervals. The memory hopper 9 is a box with an open top,
An openable and closable discharge door 9a is attached to the lower surface.
An object to be weighed by the weighing hopper 8 is stored and held in the memory hopper 9.

As shown in FIG. 2, the stock hopper 7, the weighing hopper 8, and the memory hopper 9 are vertically arranged in this order from top to bottom, and are arranged inside the apparatus from top to bottom. In addition, they are arranged so that the inclination in the discharge direction of the objects to be weighed is gentle. The object to be weighed stored in the memory hopper 9 at the last stage is dropped and discharged by opening the bottom cover.

A plurality of memory hoppers 9 arranged circumferentially
Below this, a funnel-shaped collecting hopper 10 is provided (see FIG. 3). The collecting chute 10 of this example is a hollow truncated cone having a relatively large inlet on the upper surface and a relatively small outlet on the lower surface. The collecting chute 10 collects the objects to be weighed discharged from the respective memory hoppers 9 and discharges them downward.

A substantially circular mortar-shaped main body 15 is provided at the center of the apparatus when viewed from the side, and the dispersion supply section 2 is disposed on a substantially planar upper surface. The above-described stock hopper 7, the weighing hopper 8, and the memory hopper 9 are arranged on the entire side surface. The main body 15 has a substantially circular mortar shape, and the hoppers 7, 8, and 9 are arranged inside the apparatus as going from top to bottom. Therefore, the collecting chute 10 can be small in size with an opening diameter at the upper end being small. The memory hopper 9 has a sliding portion 9b of a predetermined length in the height direction up to the collecting chute 10 as shown in the figure.

Although not shown, each driving means for the dispersion section 3 of the dispersion supply section 2 and the transport trough 4 is provided inside the main body section 15. In addition, the hopper 7,
There are provided drive means 8 and 9 and weighing means such as a load cell for weighing the object put into the weighing hopper 8. The main body 15 is supported by a plurality of columns 16.

The weighing operation according to the above configuration will be described. The objects to be weighed are dispersed in the dispersion section 3 of the dispersion supply section 2 in the radial direction of the plane, and are distributed substantially evenly to the stock hopper 7 by the plurality of transport troughs 4 provided in the dispersion direction. The objects to be weighed are dropped into the respective weighing hoppers 8 by approximately the same amount via the stock hoppers 7, and the weights of the weighed objects are dropped into the memory hoppers 9. Then, a combination of the weighing values of the plurality of weighing hoppers 8 for obtaining the desired mass value is calculated, and the memory hopper 9 is opened. In the meantime, the next weighing object is weighed in the weighing hopper 8. After the discharge of the memory hopper 9, the objects to be weighed in the weighing hopper 8 where the weighing has been performed are immediately put into the memory hopper 9 and the discharging is performed in the following combination.

As described above, if the memory hopper 9 and the weighing hopper 8 are provided, the work becomes more efficient than the case where the weighing is performed by the weighing hopper 8 and discharged directly to the collecting chute 10. A device (not shown) for packing the objects to be weighed is provided below the collecting chute 10 so that the objects to be weighed having a predetermined mass can be packed.

FIG. 4 is a side sectional view of a cover attached to the combination weighing device. As shown, a plurality of covers 20 are provided in units of vertical rows of hoppers 7, 8, 9 provided on the outer periphery of the apparatus (this is called a channel). The device of FIG. 1 has a total of eight channels and has eight covers 20.

The cover 20 is formed by bending a metal such as stainless steel. The cover 20 includes a vertically long front part 20 a having a predetermined height, a top part 20 b, and a front part 2.
0a. The front portion 20 a has a height from a position slightly higher than the upper end of the transport trough 4 to a discharge door 9 a of the memory hopper 9. The memory hopper 9 has a surface 20bb which is inclined inside the apparatus in accordance with the inclination of the memory hopper 9, from the upper end to the lower end of the weighing hopper 8. The side surface portion 20c has the same height as the front surface portion 20a, and has another cover 20 adjacent thereto.
Has a width enough to be joined to the side surface portion 20c.

The upper surface portion 20a extends substantially to the center of the transport trough 4 in the transport direction and is formed substantially horizontally. The upper surface portion 20b is located at a predetermined height above the transport surface so as not to come into contact with the object to be weighed which is transported on the transport trough 4. It is desirable that the upper surface portion 20a is formed so as to extend as far as possible in the direction of the dispersing portion 3. However, the loading position and the loading height of the object on the dispersing portion 3, and the object to be weighed on the transport trough 4 To a position that does not touch the loading height of

On the back surface of the front portion 20a of the cover 20,
Locking pieces 21 and 22 are provided at two upper and lower positions, and are detachably attached to vertically aligned hoppers 7, 8, and 9 constituting each channel. Each of these locking pieces 21 is substantially L
It has a hook shape protruding downward in the shape of a letter, and the upper engaging piece 21 is engaged with the upper end edge 7 c of the opening of the stock hopper 7. The lower locking piece 21 is locked to the upper edge 9 c of the opening of the memory hopper 9.

FIG. 5 is a plan view showing a state where a cover is attached to the combination weighing device, and FIG. 6 is a side view of the same. As shown in these figures, the cover 20 is attached to the hoppers 7, 8, and 9 for each channel, and
“b” covers about half of the rear side of the transport trough 4 in the transport direction. Further, the front portion 20a and the side portion 20c cover the stock hopper 7, the weighing hopper 8, the upper input port and the entire side surface, and the upper input portion and the upper half of the side surface of the memory hopper 9. Thus, it is possible to prevent dust and the like from being mixed in from the inlets of the stock hopper 7, the weighing hopper 8, and the memory hopper 9. Further, since the front part 20a and the side part 20b are formed to be inclined inside the apparatus in accordance with the inclination of the main body part 15, the cover 20 itself prevents entry of dust and dirt from a middle position in the height direction. Further, it can be prevented, and there is no unnecessary protrusion and no space is required.

Since the cover 20 is provided separately for each channel, it is small and lightweight and can be easily attached and detached. Further, the hoppers 7, 8, and 9 of desired channels can be individually inspected. The cover 20 is removed by holding the cover 20 and moving it upward, so that the upper locking piece 21
From the upper edge 7c of the lower portion, and at the same time,
Can be removed from the upper edge 9c of the memory hopper 9. Since the cover 20 is provided for each channel, the cover 20 can be easily removed by one person.

In the above-described embodiment, the combination weighing device having eight channels has been described as an example. However, the present invention is not limited to this and can be similarly applied to a combination weighing machine having a plurality of channels. For example, FIG. 7 is a plan view showing a state in which the cover 20 is attached to a 10-channel combination weighing device. Even in the case of ten channels as shown in the figure, ten covers 20 corresponding to the outer diameters of the hoppers 7, 8, and 9 of each channel may be used, and the channel 20 can be easily removed in the same manner as described above.

Further, in the above-described embodiment, the configuration in which the cover is detachable in a series of vertical units constituting a channel has been described. However, the present invention is not limited to this, and the cover may be detachable in a plurality of vertical units of two or more channels. Can also.

Further, in the dry-type (measurement object is a dry matter) combination weighing apparatus described in the above embodiment, the dispersion supply section is configured to distribute and supply the measurement object around the periphery. The present invention is not limited to this, and can be applied to other forms of combination weighing devices. For example, in a combination type weighing apparatus of a wet type (a weighing object is wet), the dispersing and supplying units are arranged in a straight line in a horizontal direction, and each hopper is also arranged in a horizontal plane correspondingly. As in the embodiment, a stock hopper, a weighing hopper, and a memory hopper that constitute each channel are vertically arranged. In addition, this combination weighing device is provided with a collecting means such as a conveyor for collecting the secret weighing objects discharged from the hoppers selected and combined in one place instead of the collecting chute described above. Also in such a wet type combination weighing device, the cover can be detachably provided in at least one unit constituting each channel, and the same operation and effect can be obtained.

[0034]

According to the present invention, the cover is detachable at least in a series of vertical units constituting the channel, the cover can be formed small and lightweight, and the attachment and detachment of the cover and the maintenance and inspection for each channel can be easily performed. Can be done.
In addition, since the cover is provided with a locking piece and locked to the upper edge of the hopper, the cover can be easily attached and detached. Further, the main body of the device is formed in a substantially circular mortar shape in which the side surface is inclined downward toward the inside of the device as it is downward, and by fitting the cover with the cover, dust, dust and the like can be further prevented from being mixed,
In addition, there is no unnecessary protruding portion and no installation space is required. Further, by forming the upper surface of the cover so as to extend as far as possible toward the inside of the apparatus, the intrusion of dust, dust and the like can be further prevented.

[Brief description of the drawings]

FIG. 1 is a plan view showing the overall configuration of a combination weighing device of the present invention.

FIG. 2 is a plan view of the device.

FIG. 3 is a side view of the device.

FIG. 4 is a side view showing a cover.

FIG. 5 is a plan view showing a state where a cover is attached to the apparatus.

FIG. 6 is a side view showing a state where a cover is attached to the apparatus.

FIG. 7 is a plan view showing a state where a cover is attached to a 10-channel device.

FIG. 8 is a side view showing a conventional combination weighing device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Combination weighing device, 2 ... Dispersion supply part, 3 ... Dispersion part, 4
... Transport trough, 7 ... Stock hopper, 7c ... Top edge, 8
... Measurement hopper, 9 ... Memory hopper, 9c ... Top edge, 10
... Collective chute, 20 ... Cover, 20a ... Front part, 20
b: upper surface, 20c: side surface, 21: locking piece.

Claims (5)

[Claims] 1. A dispersion supply unit for dispersing and supplying an object to be weighed,
A plurality of hoppers arranged and arranged to have a plurality of channels in the dispersion direction of the dispersion supply unit, and to store and weigh objects to be weighed by a predetermined amount in each channel and selectively drop and discharge,
Collecting means for collecting and discharging the discharged objects to be weighed, which is disposed below the hoppers of the respective channels, and wherein a plurality of hoppers are selected and combined based on the weighed values to thereby obtain a predetermined mass of the objects to be weighed. The combination weighing device according to claim 1, wherein said hopper is provided with a detachable cover at least in units of one vertical unit constituting each of said channels. 2. A dispersion supply section (2) for dispersing and supplying an object to be weighed to the periphery, and a plurality of channels arranged circumferentially around the dispersion supply section, each of which is weighed by a predetermined amount. A plurality of hoppers (7, 8, 9) for storing, weighing, and selectively dropping and discharging objects; and a collecting chute disposed below the hoppers of the respective channels for collecting and discharging the discharged objects to be weighed. (10), wherein a plurality of hoppers are selected and combined based on the weighed value to obtain an object to be weighed having a predetermined mass, wherein the hoppers are arranged in at least one vertical unit constituting each of the channels. A combination weighing device, wherein a removable cover (20) is provided on the combination weighing device. 3. The cover (20) is provided with a locking piece (21) that can be locked on an upper edge (7c, 9c) of an input port of the hopper (7, 9). The combination weighing device according to any one of the above. 4. A substantially circular mortar-shaped main body (15) which is provided at the center of the device and has a side surface to which the hoppers (7, 8, 9) of the respective channels are attached, and which inclines toward the inside of the device as it goes downward. The combination weighing device according to claim 2, wherein the cover (20) has a side surface (20c) that is inclined inward toward the inside of the device according to the inclination of each of the hoppers (7, 8, 9) attached to the main body. . 5. The cover (20) extends inwardly of the apparatus to a position where it does not come into contact with the object to be weighed, based on a position where the object to be weighed is loaded into the dispersion supply section (2) and a loading height. The combination weighing device according to any one of claims 1 and 2, further comprising a formed upper surface (20a).