JP2023157534A - Combination balance - Google Patents

Abstract

To provide a combination balance allowing easy attachment and removal of conveyance adjustment members, even at a site with a low ceiling.SOLUTION: A cylindrical conveyance adjustment member 22, which is hung above a dispersion feeder or a rectilinear feeder and contacts a weighed material to be conveyed to regulate the conveyance thickness of the weighed material, is divided into several parts in a circumferential direction. Each of the divided adjustment members 22A and 22B is removably mounted and connected to an oppositely placed support frame 21. Each of the divided adjustment members 22A and 22B, disconnected from the support frame 21, can move horizontally along the opposing support frame 21 in a direction away from or close to each other.SELECTED DRAWING: Figure 3

Description

The present invention relates to a combination scale for weighing objects to be weighed such as foods.

In general, in a combination weigher, the object to be weighed is fed from an upper feeding device and conveyed in a distributed manner to a plurality of linear feeders arranged around the dispersion feeder. and then supplied to multiple supply hoppers. The plurality of supply hoppers supply the objects to be weighed to the plurality of weighing hoppers, and the plurality of weighing hoppers measure the weight of the objects to be weighed. The combined weight of various combinations of the weights of the objects to be weighed in these plurality of weighing hoppers is then discharged from the weighing hoppers in appropriate combinations within a predetermined weight range, and sent to the packaging machine, etc., below via a collection chute, etc. throw into.

In such a combination weigher, depending on the object to be weighed, the conveyance amount of the dispersion feeder may be offset in the circumferential direction, and the thickness of the object to be weighed in each linear feeder may become uneven. As a countermeasure for such cases, a cylindrical adjustment member made of an elastic material is suspended above the conveyance trough of the linear feeder in the form of a curtain, and the object to be weighed to be transferred is leveled with the adjustment member, and its layer thickness, i.e. There is a method in which the conveyance thickness is adjusted uniformly (for example, see Patent Document 1).

Japanese Patent Application Publication No. 11-326023

Objects to be weighed may adhere to the transport adjustment member that adjusts the transport thickness as described above, so when changing the type of object to be weighed, replace it with a clean transport adjustment member or remove it. When removing the conveyance adjustment member for cleaning, it is necessary to lift upward the conveyance adjustment member that is suspended above the conveyance trough of the linear feeder.

The objects to be weighed are dropped and fed to the dispersion feeder, which transports the objects to be weighed to the straight feeder, from the supply device above it, so in sites with low ceiling heights, the supply device must be installed at a height close to the dispersion feeder. I don't get it. In such a site, the upper supply device becomes an obstacle, making it difficult to lift the conveyance adjustment member upward and remove it, and it may not be possible to provide the conveyance adjustment member.

The present invention has been made with attention to such points, and an object of the present invention is to provide a combination weigher in which a conveyance adjustment member can be easily attached and detached even in a work site where the ceiling height is low.

In order to achieve the above object, the present invention is configured as follows.

(1) The combination weigher according to the present invention includes a dispersion feeder that transports objects to be weighed that are fed to a top cone that is circular in plan view, and a dispersion feeder that is arranged around the dispersion feeder to transport objects to be weighed from the dispersion feeder. a plurality of linear feeders each conveying objects outward; and a cylindrical feeder that is suspended above the dispersion feeder or the linear feeder and contacts the object to be weighed to regulate the conveyance thickness of the object to be weighed. a transport adjustment member; and a plurality of support frames that support the transport adjustment member,
The conveyance adjustment member has a plurality of divided adjustment members divided along the circumferential direction, the support frame removably places and connects each divided adjustment member, and the support frame The divided adjustment members disconnected from the frame are horizontally movable along the support frame in a direction away from each other or in a direction toward each other while being placed on the support frame.

According to the combination weigher according to the present invention, when replacing the conveyance adjustment member, first, the divided adjustment members that have been disconnected from the support frame are moved in the direction in which they are separated from each other while being placed on the support frame. , it is only necessary to horizontally move it outward, and there is no need to lift and remove the conveyance adjustment member upward, and the upper supply device does not get in the way.

In addition, to set the conveyance adjustment members to their original positions, after placing each division adjustment member near the outer end of the support frame, place each division adjustment member on the support frame in the direction in which they approach each other, That is, it is only necessary to horizontally move it inward and connect and fix it to the support frame at a predetermined position, and there is no need to lift it upward.

(2) In a preferred embodiment of the present invention, each of the divided adjustment members includes a circumferential frame having a partially arcuate shape in plan view, and an adjustment member main body hanging from the circumferential frame, and the circumferential frame has an outer side thereof. A plurality of connecting portions are placed and supported on the plurality of support frames arranged in the plurality of support frames, and are removably connected to the plurality of support frames, and protrude outward.

According to this embodiment, the plurality of connecting portions protruding outward from the circumferential frame having a partially arcuate shape in plan view are placed and supported on the plurality of support frames, and each division adjustment member can be moved horizontally, and can be removably connected to each support frame, so that each division adjustment member can be connected and fixed to the support frame.

(3) In another embodiment of the present invention, the connection portion of the peripheral frame of the division adjustment member is formed with a slit that is open at the dividing end side, and the support frame is provided with a slit in the connection portion of the peripheral frame. A connecting bolt that engages with the slit of the connecting portion is attached, and by tightening the connecting bolt that engages the slit of the connecting portion, the peripheral frame of the division adjustment member is connected and fixed to the support frame.

According to this embodiment, by slightly loosening the connection bolt, the split adjustment member can be horizontally moved in the inner and outer directions while being placed on the support frame. In addition, when setting the removed split adjustment member to its original position, move the split adjustment member placed on the support frame horizontally inward, and insert the slit provided at the connection part of the split adjustment member into the split adjustment member. The split adjustment member can be positioned at a predetermined connection position by engaging the loosened connection bolt through the end opening. Thereafter, the split adjustment member can be fixed at a desired correct position by tightening the connecting bolt.

(4) In yet another embodiment of the present invention, the attachment position of the connection bolt can be changed and adjusted in a direction facing the support frame.

According to this embodiment, by adjusting the opposing interval of the support frames that support the division adjustment members, it is possible to connect and support the division adjustment members of the conveyance adjustment members having different diameters to the support frames.

(5) In one embodiment of the present invention, the support frame is connected and supported by a plurality of vertically fixed pillars in a height-adjustable manner.

According to this embodiment, by adjusting the height of the support frame, the height of the lower end position of the suspended conveyance adjustment member can be adjusted, and the conveyance thickness of the object to be weighed can be arbitrarily changed and adjusted. can.

As described above, according to the present invention, the conveyance adjustment member can be attached and detached by simply sliding the division adjustment member in the horizontal direction while it is placed on the support frame, and there is no need to lift the division adjustment member upward. Therefore, the upper supply device that drops and supplies the objects to be weighed to the dispersion feeder does not get in the way. As a result, the conveyance adjustment member can be provided even in a field where the ceiling height is low and the supply device must be installed at a height close to the distributed feeder.

FIG. 1 is a schematic configuration diagram of a combination weigher according to an embodiment of the present invention. FIG. 2 is a perspective view of the upper part of the combination scale of FIG. 1. FIG. 3 is a perspective view of the conveyance adjustment member of FIG. 2 that has been divided and moved. FIG. 4 is a plan view of the conveyance adjustment member. FIG. 5 is a longitudinal sectional side view of the main part. FIG. 6 is a perspective view of another embodiment of the mounting structure for the conveyance adjustment member. FIG. 7 is a partially enlarged view showing the connection points in FIG. 6. FIG. 8 is a perspective view of another embodiment of the invention. FIG. 9 is a plan view of an embodiment in which the conveyance adjustment member is divided into three parts.

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

FIG. 1 is a schematic configuration diagram of a combination weigher according to an embodiment of the present invention.

The combination scale of this embodiment weighs and discharges objects to be weighed, such as various foods, in predetermined amounts. This combination scale is installed at the upper floor of a tower-shaped frame that allows workers to climb up and down, and discharges the weighed objects to a packaging machine (not shown) installed at the lower floor and bags them. Used for packaging lines.

A rectangular base 1 with a large through-opening in the center is installed on the floor F of the upper part of the frame floor, and above the center of this base 1, a plurality of center bases 2 formed in the shape of a short hollow column are installed. It is supported via the legs 3 of.

At the center of the upper part of the center base body 2, a dispersion feeder 5 is installed which radially disperses the object to be weighed, which is discharged from a supply device 4 such as a belt conveyor and is fed by falling, by vibration, and the surrounding area of the dispersion feeder 5 is A plurality of linear feeders 6 are provided in a radial manner to linearly transport the objects to be weighed that have been dispersed and transported outward by vibration.

Further, on the outer periphery of the center base 2, there is a supply hopper 7 for temporarily storing and discharging the objects to be weighed from each linear feeder 6, and a weighing device for weighing the objects to be weighed discharged from each supply hopper 7. Equipped with hopper 8. A plurality of weighing units including the supply hopper 7 and the weighing hopper 8 perform combined weighing and discharge of objects to be weighed.

A collecting chute 9 is provided below each weighing hopper 8 to collect objects to be weighed discharged from a plurality of weighing hoppers 8 selected in combination so as to have a predetermined weight range to the center side. A collection funnel 10 is disposed below the collection chute 9 to collect the objects to be weighed that have fallen down from the collection chute 9 further into the center. A collecting hopper 11 is disposed at the lower end of the collecting funnel 10, which temporarily receives and stores the objects to be weighed that have been collected by the collecting funnel 10, and which discharges them based on a discharge request command from the packaging machine side.

The distributed feeder 5 is configured to vibrate a top cone 12 which is circular in plan view using an electromagnetic vibration mechanism 13. The vibration mechanism 13 is installed at the center of a frame plate 14 arranged inside the center base body 2. Note that the vibration mechanism 13 is supported on a frame plate 14 via a weight sensor 15. The weight of the object to be weighed on the distributed feeder 5 is detected by the weight sensor 15, and the supply device 4 is controlled on/off based on the detected information, and the weight of the object to be weighed on the distributed feeder 5 is placed within a set range. is being supplied.

The linear feeder 6 is configured to vibrate a gutter-shaped trough 16 using an electromagnetic vibration mechanism 17. The vibration mechanism 17 of each linear feeder 6 is arranged on the frame plate 14 in the center base 2 so as to surround the vibration mechanism 13 of the distributed feeder 5.

A drive mechanism for opening and closing the gates of the supply hopper 7 and weighing hopper 8 constituting the weighing unit, a weight sensor for measuring the weight of the object to be weighed in the weighing hopper 8, etc. are built into the outer periphery of the center base 2. A supply hopper 7 and a weighing hopper 8 are detachably attached to and supported by a hook method at an externally exposed portion of the drive unit 18.

The combination weigher of this embodiment is configured as follows in order to make the conveyance thickness of the objects to be weighed in the linear feeder 6 uniform.

As shown in FIG. 2, which is a perspective view of the upper part of the combination weigher, pillars 20 made of round bars or round pipes are erected at four locations on the outer periphery of the center base body 2. As shown in FIG. As shown in FIG. 1, two support frames 21 each having an inverted L-shaped cross section are supported and connected to each other over the upper portions of each pair of support columns 20 so as to face each other in parallel.

A cylindrical conveyance adjustment member 22 is connected and fixed between both support frames 21 so as to surround the vicinity of the outer periphery of the distributed feeder 5 .

The conveyance adjustment member 22 is attached to a peripheral frame 23 with a flange so that an adjustment member main body 24 made of a sheet material made of urethane rubber, for example, hangs down. The lower end of the adjustment member main body 24 is connected and supported by the support frame 21 so that the distance between it and the outer periphery of the top cone 12 in the distributed feeder 5 and the distance between it and the trough 16 in the linear feeder 6 are set to predetermined dimensions.

The cylindrical conveyance adjustment member 22 is divided into two parts in the circumferential direction, and as shown in the plan view of the conveyance adjustment member 22 in FIG. The divided adjustment members 22A and 22B are supported and connected across both support frames 21 so that they can be attached and detached independently.

That is, a pair of connecting portions 23a extending from the peripheral frame 23 protrude outward near both ends in the circumferential direction of each of the division adjustment members 22A, 22B. Each of the connecting portions 23a is placed on the supporting frame 21 facing each other, and is secured by tightening a connecting bolt 25 with a handle.

As shown in FIG. 3 with one division adjustment member 22A moved, and as shown by the imaginary lines in FIG. A slit 26 for bolt insertion is formed which is open at the split end side. By loosening the connecting bolt 25, the split adjustment members 22A and 22B can be horizontally moved along the upper surface of the support frame 21 in a direction in which the split adjustment members 22A and 22B are moved away from each other or in a direction in which they are brought closer to each other. It has become.

Both ends of the support frame 21 are inserted into the support column 20, and as shown in FIG. By tightening and fixing, the support frame 21 can be fixed at a desired height.

By adjusting the height of the support frame 21 in this manner, the height of the lower end position of the conveyance adjustment member 22 can be adjusted, and the conveyance thickness of the object to be weighed can be arbitrarily changed and adjusted.

According to the present embodiment having the above configuration, when removing the conveyance adjusting member 22 at the end of the work or when changing the type of the object to be weighed, etc., the connecting bolt 25 is slightly loosened, and each divided adjusting member 22A is removed. , 22B are placed on the upper surface of the support frame 21 and are slid horizontally outward along the support frame 21, that is, in a direction away from each other. Thereby, the conveyance adjustment member 22 can be slid to a space with an open upper part without having to be lifted above the dispersion feeder 5.

Further, each of the clean new division adjustment members 22A and 22B is placed on the upper surface of the outer end of the support frame 21 and slid horizontally inward, that is, in a direction in which they approach each other, so that the slit 26 of the connecting portion 23a is loosened. At the same time, the two divided adjusting members 22A and 22B are butt-positioned, and then the connecting bolt 25 is tightened to complete mounting of the conveyance adjusting member 22.

In this way, according to the present embodiment, when replacing the conveyance adjusting member 22, there is no need to lift the conveying adjusting member 22 above the dispersion feeder 5, and each divided adjusting member 22A, 22B is moved to the support frame 21. It is possible to slide the device horizontally while it is placed on the screen and move it to a space that is open above. Therefore, the feeding device 4 above the dispersion feeder 5 shown in FIG. 1 does not get in the way of replacing the conveyance adjustment member 22. As a result, the conveyance adjustment member 22 can be provided even in a field where the ceiling height is low and the supply device 4 must be installed at a height close to the distributed feeder 5.

[Other embodiments]
The present invention can also be implemented in the following forms.

(1) As shown in FIG. 6 and FIG. 7, which is a partially enlarged view of the connection location, at the connection location of the conveyance adjustment member 22 in the support frame 21, extending along the opposing direction of the support frames 21 facing each other. An elongated hole 31 may be provided, and as shown in FIG. 6, a connecting bolt 25 with a handle and a back nut 32 with a handle may be installed so that their positions can be changed along the elongated hole 31. This allows the conveyance adjusting members 22 having different diameters to be connected.

In this case, as shown in FIG. 6, by forming a notch 33 on the lower side of the vertical wall portion 21a of the support frame 21, the adjustment member main body that protrudes outward from the outer periphery of the divided adjustment members 22A, 22B can be attached. Interference with the bolts and nuts 34 for use can be avoided. As a result, the divided adjustment members 22A and 22B can be brought close to the vertical wall portion 21a of the support frame 21 and connected and supported.

(2) By connecting the opposing support frames 21 to the support columns 20 so that the interval between them can be changed, it is also possible to accommodate conveyance adjustment members 22 having different diameters.

(3) As shown in FIG. 8, when the guide ribs 21b are bent and raised along the outer edge of the support frame 21, when the removed division adjustment members 22A and 22B are attached to the support frame 21, the guide ribs 21b are bent and raised. The slit 26 can be easily engaged with and guided by the connecting bolt 25 by sliding both connecting portions 23a of the placed peripheral frame 23 inward while slidingly guiding the inner surfaces of the opposing guide ribs 21b.

(4) As shown in FIG. 8, if arch-shaped handles 35 are provided at appropriate positions on the upper surface of the peripheral frame 23 of the split adjustment members 22A and 22B, the split adjustment members 22A and 22B can be put in and taken out and moved. Easy to operate.

(5) The adjustment member main body 24 of the conveyance adjustment member 22 may be made of any material, such as a hard resin plate or a thin metal plate, depending on the properties and size of the object to be measured. Alternatively, cuts may be made in the adjustment member body 24 at appropriate pitches in the circumferential direction so that it can be deformed into a curtain shape.

(6) The conveyance adjustment member 22 is not limited to being divided into two parts as described above, but may be divided into three parts in the circumferential direction. As shown in FIG. 9, the conveyance adjustment member 22 is composed of divided adjustment members 22A, 22B, and 22C that are equally divided into three parts in the circumferential direction, and three support frames 21 each having a chevron-shaped planar shape are provided. The pair of support columns 20 are connected and supported at the upper part, and the connecting portions 23a of each of the divided adjustment members 22A, 22B, and 22C are placed and connected to the parallel opposing parts of the adjacent support frames 21 so as to be able to slide in and out. It is also possible to implement it in the form of

4 Supply device 5 Dispersion feeder 6 Straight feeder 20 Support column 21 Support frame 22 Conveyance adjustment member 22A, 22B, 22C Division adjustment member 23 Peripheral frame 23a Connecting portion 24 Adjustment member main body 25 Connecting bolt 26 Slit

Claims (5)

A dispersion feeder that transports objects to be weighed supplied to a top cone that is circular in plan view to the surroundings, and a plurality of linear feeders arranged around the dispersion feeder that respectively transport the objects to be weighed from the dispersion feeders to the outside. a feeder, a cylindrical conveyance adjustment member that is suspended above the distributed feeder or the linear feeder and contacts the conveyed object to be weighed to regulate the conveyance thickness of the object to be weighed; and the conveyance adjustment member. A plurality of supporting frames are provided.
The conveyance adjustment member has a plurality of divided adjustment members divided along the circumferential direction,
The support frame removably places and connects each divided adjustment member,
Each of the division adjustment members that have been disconnected from the support frame is horizontally movable along the support frame in a direction away from each other or in a direction toward each other while being placed on the support frame.
A combination scale characterized by: Each of the divided adjustment members includes a circumferential frame having a partial arc shape in plan view, and an adjustment member main body hanging from the circumferential frame,
A plurality of connecting portions are installed and supported on the plurality of support frames disposed on the outer side of the peripheral frame, and a plurality of connecting portions are removably connected to the plurality of support frames and project outward. has been,
The combination weigher according to claim 1. A slit with an open dividing end side is formed in the connecting portion of the peripheral frame of the dividing adjustment member,
A connecting bolt that engages with a slit in the connecting portion of the peripheral frame is attached to the support frame,
The peripheral frame of the division adjustment member is connected and fixed to the support frame by tightening the connection bolt that is engaged with the slit of the connection part.
The combination weigher according to claim 2. The mounting position of the connecting bolt can be changed and adjusted in a direction facing the support frame.
The combination weigher according to claim 3. The support frame is connected and supported in a height-adjustable manner to a plurality of vertically fixed pillars.
A combination weigher according to any one of claims 1 to 4.

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