JP2012021843A - Combination balance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a measurement processing capacity of a semi-automatic combination balance by shortening a time required for conveying measuring objects which has established combination, to a subsequent device.SOLUTION: This combination balance includes upper/lower two-stage conveyers 4 and 5 which convey, as a result of a combinatorial computation performed based on the weight of the measuring objects to be fed to a plurality of memory hoppers 11-11and 12-12, measuring objects discharged from selected memory hoppers to a subsequent-stage packaging device; and is adapted to discharge the measuring objects from the selected memory hopper to the conveyers 4 and 5 alternately, whenever the combination is established by the combinatorial computation. Therefore, even if one conveyer 4 (or 5) is conveying the measuring object, the measuring object can be discharged from the memory hopper selected by the combinatorial computation and conveyed to the other conveyer 5 (or 4).

Description

  The present invention relates to a combination weigher, and more particularly to a semi-automatic combination weigher in which an object to be weighed is input by an operator's hand.

  In semi-automatic combination weighers, objects to be weighed are manually put into the combination weighers, so that the weight of the weighing object is relatively large and irregular, or weighed objects that are difficult to handle by a machine, such as chicken (broiler), etc. It is suitable for handling seafood such as raw meat, squid and octopus.

  For example, Patent Document 1 discloses such a conventional semi-automatic combination weigher.

  FIG. 17 is a plan view of a conventional semi-automatic combination weigher, FIG. 18 is a front view thereof, and FIG. 19 is a side view thereof.

In the semiautomatic combination weigher, the operator supplies the objects to be weighed more inlet 8 _{1-8 8} each of a plurality of supply hoppers arranged respectively thereunder from 321 _to 323 ₈ manually. Each of the supply hoppers 32 _{1 to} 32 ₈ includes double-open discharge gates 32 ₁ a _to 32 ₈ a _and 32 ₁ b to 32 ₈ b, and one of the gates 32 ₁ a to 32 ₈ a (or 32 ₁ b to 32 ₈ b) are opened as shown by the arrows in FIG. 19, so that the object to be weighed is divided into two weighing chambers 34 ₁ a to 34 ₈ a and 34 ₁ b to 34 ₈ b. supplied to one of the weighing chambers 34 ₁ a~34 ₈ a (or 34 ₁ b~34 ₈ b) of the plurality of weighing hoppers 34 _{1-34 8} being.

Each weighing hopper 34 _{1-34 8} are respectively connected to each of the weighing sensor comprising a load cell provided in the main body (not shown), the objects to be weighed of each weighing hopper 34 _1-34 in ₈ by respective weighing sensor The object is weighed. Objects to be weighed are fed hopper 32 _{1-32 8} weighing hopper 34 _{1-34 8} two weighing chambers 34 ₁ from _{a~34 8 a, 34 1 b~34 8} b one weighing chambers 34 ₁ a of To 34 ₈ a (or 34 ₁ b to 34 ₈ b), the respective weighing chambers 34 ₁ a to 34 ₈ a, 34 ₁ b to 34 are based on the change in the weight value detected by each weighing sensor. The object to be weighed supplied to 34 ₈ b can be weighed.

In this combination weigher, weighing chambers 34 ₁ a to 34 ₈ a, 34 of weighing hoppers 34 _{1 to} 34 ₈ , in which weighing objects are supplied and weighing by weighing sensors is completed at the timing of combination calculation at regular time intervals. Various combinations of the weights ₁ b to 34 ₈ b are searched, and a combination in which the total weight is equal to the target combination weight or within the allowable weight range closest to the target combination weight is searched from among these combinations. That is, a combination operation is performed. Then, the combination is established, the metering chamber _{34 1 a~34 8 a, 34 1} b~34 8 b of the weighing hoppers 34 _{1-34 8} objects to be weighed which constitute the selected combination is accommodated shown The discharge gate is opened, discharged onto the transport conveyor 35, transported by the transport conveyor 35 to a packaging machine (not shown) disposed on the carry-out end side of the transport conveyor 35, and covered by the packaging machine. Weighing items are packed.

In this manner, the discharge of the objects to be weighed, the weighing chamber _{34 1 a~34 8 a, 34 1} b~34 8 b of the weighing hoppers 34 _{1-34 8} emptied thereabove The objects to be weighed are supplied from certain supply hoppers 32 _{1 to} 32 ₈ . As a result, the objects to be weighed are manually supplied to the empty supply hoppers 32 _{1 to} 32 ₈ .

  FIG. 20 is a plan view of another conventional semi-automatic combination weigher, FIG. 21 is a front view thereof, and FIG. 22 is a side view thereof.

The semi-automatic combination weigher of this conventional example is not provided with a supply hopper, and weighing hoppers 9 _{1 to} 9 ₁₆ are arranged in two lines on a straight line corresponding to each of the plurality of input ports 8 ₁ to 8 ₁₆ . The objects to be weighed are supplied directly to these weighing hoppers 9 _{1 to} 9 ₁₆ . Each weighing hopper 9 _{1 to} 9 ₁₆ is connected to a weighing sensor (not shown) made of a load cell.

In this prior art, combining the weight of the objects to be weighed inside the weighing hoppers 91 _to 93 ₁₆ variously combined total weight is equal to the target combination weight, or a combination within the closest permissible weight range to the target combination weight When the combination operation to be searched is performed and the combination is established, the objects to be weighed from the selected weighing hoppers 9 _{1 to} 9 ₁₆ are discharged to the transfer conveyor 36 and transferred to the packaging machine.

 Other configurations are the same as those of the conventional example of FIGS.

JP 2006-201073 A

  In the semi-automatic combination weigher of the conventional example, the combination is established by the combination calculation, and the objects to be weighed within the predetermined weight range discharged from the selected hopper are transferred to the subsequent packaging machine or the like by the transport conveyor.

  For example, while the objects to be weighed selected by the previous combination calculation are being conveyed by the conveyor, the objects to be weighed selected by the next combination calculation cannot be discharged onto the conveyor.

  Therefore, the weighing capacity of the semi-automatic combination weigher is limited by the time for which the conveyor conveys the objects to be weighed on the conveyor to a subsequent apparatus such as a packaging machine. In other words, the combination is established by the combination calculation, and the object to be weighed cannot be discharged even if the combination is established by the next combination calculation while the object to be weighed selected and discharged by the combination conveyor is being conveyed by the conveyor. There are challenges.

  In such a case, it is conceivable to operate the conveyor at high speed to convey it at a high speed. However, when high-speed conveyance is performed, when an object to be weighed is introduced from the unloading end of the conveyor to a subsequent device such as a packaging machine. In addition, the delivery is such that the object to be weighed is released in a parabolic manner and hits the receiving chute of the packaging machine. For this reason, the object to be weighed is damaged and the quality is lowered. In addition, when high-speed conveyance is performed, new problems arise such that the objects to be weighed slip on the conveyor and roll, and noise during operation of the conveyor increases. Therefore, there is a limit to the transfer speed of the transfer conveyor, and it is difficult to perform high-speed transfer.

  The present invention has been made in order to solve the above-described problems, and reduces the time required for transporting an object to be weighed in a combination to a subsequent apparatus, so that it is a semi-automatic combination weigher. The purpose is to improve the weighing processing capacity.

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

  (1) The combination weigher of the present invention is a semi-automatic combination weigher that manually feeds the objects to be weighed, and includes a plurality of hoppers to which the objects to be weighed are fed, and a plurality of objects to be fed to the plurality of hoppers. Based on the weight of the object to be weighed, a combination operation is performed, and the operation control means for discharging the object to be weighed from the hopper selected by the combination operation, and the object to be discharged from the hopper disposed below the hopper. Transporting means for transporting a weighing object to a subsequent apparatus, and the transporting means has at least two transport systems, and each transport system has an object to be weighed from the hopper selected by the combination calculation. Are discharged as transport units.

  The hopper may be any one that holds and discharges an object to be supplied, and may be any of a weighing hopper, a memory hopper, and the like. The weight of the object to be weighed may be measured by this hopper, or a weighed object to be weighed may be supplied.

  The latter apparatus is an apparatus disposed on the downstream side in the conveyance direction of the object to be weighed, and is preferably a packaging machine for packaging the object to be weighed, but may be an inspection apparatus, a sorting apparatus, or the like.

  The transport system is a system that transports the objects to be weighed. In this transport system, the objects to be weighed from the hopper selected by the combination calculation are discharged as a transport unit, that is, this transport system is a combination. The object to be weighed discharged from the hopper selected by the calculation is conveyed as a unit. Therefore, for example, when the objects to be weighed discharged from the hopper selected by the combination calculation are transported in a plurality of transport paths, the plurality of transport paths become one transport system.

  According to the combination weigher of the present invention, the conveying means for conveying the objects to be weighed discharged from the hopper selected by the combination calculation to a subsequent apparatus such as a packaging machine has at least two conveyance systems. When discharging the objects to be weighed from the hopper selected by the combination calculation, do not continuously discharge to the same transfer system.For example, each time the hopper is selected by the combination calculation, the transfer system is changed in order. By discharging the object to be weighed, the object to be weighed is discharged from the selected hopper during the transfer of the object to be weighed, even if the combination calculation is established, as in the conventional example having only one conveyor. There is no such thing as being unable to do so, and waiting time is shortened. As a result, the time required for transporting the objects to be weighed in combination to the subsequent apparatus can be shortened, and the weighing capacity of the combination weigher can be improved.

  (2) In a preferred embodiment of the present invention, the two transport systems include two transport conveyors arranged in two upper and lower stages, and the hopper has a pair of discharge gates that open and close its bottom. The arithmetic control means controls the opening and closing of the pair of discharge gates, and opens one discharge gate of the pair of discharge gates to put the object to be measured on the upper conveyor. The other discharge gate is opened, and the object to be weighed is discharged to the lower conveyor.

  According to this embodiment, by controlling the opening and closing of the discharge gate, the objects to be weighed in the hopper selected by the combination calculation can be selectively discharged to the upper conveyor or the lower conveyor.

  (3) In another preferred embodiment of the present invention, the two transport systems include a center and three transport conveyors arranged in parallel on both sides thereof, and the central transport conveyor corresponds to one transport system. The transport conveyors on both sides correspond to the other transport system, the hopper has a pair of discharge gates that open and close its bottom, and the calculation control means opens and closes the pair of discharge gates. One of the pair of discharge gates is opened, the object to be weighed is discharged to the central transfer conveyor, and the other discharge gate is opened to transfer the both sides The object to be weighed is discharged onto a conveyor.

  According to this embodiment, by controlling the opening and closing of the discharge gate, the hopper weighing object selected by the combination calculation is transferred to the central transfer conveyor corresponding to one transfer system or the other transfer system. It can be selectively discharged to the corresponding conveying conveyors on both sides.

  (4) In the above embodiments of (2) and (3), the calculation control means transfers the weighing object of the selected hopper to the two transport systems every time the hopper is selected by the combination calculation. Alternatively, it may be discharged alternately.

  According to this embodiment, the weighing object of the selected hopper is alternately discharged to the two conveyance systems every time a combination is established by the combination calculation. Even when one transport system is transporting, it is possible to discharge the object to be transported to the other transport system, and the waiting time is shortened. As a result, compared to the conventional example having only one conveyor, it is possible to reduce the time required to transport the objects to be weighed to a subsequent packaging machine, and to improve the weighing processing capacity. Can do.

  According to the present invention, the conveying means for conveying the objects to be weighed discharged from the hopper selected by the combination calculation to a subsequent apparatus such as a packaging machine has at least two conveyance systems. When discharging the object to be weighed from the selected hopper, it is not continuously discharged to the same transfer system, but sequentially discharged to different transfer systems, as in the conventional example having only one transfer system. During the transfer of the weighing object, even if the combination calculation is established, the object to be weighed cannot be discharged from the selected hopper, and the waiting time is shortened. As a result, the time required for transporting the objects to be weighed in combination to the subsequent apparatus can be shortened, and the weighing capacity of the combination weigher can be improved.

FIG. 1 is a schematic plan view of a semi-automatic combination weigher according to an embodiment of the present invention. FIG. 2 is a schematic front view of the semi-automatic combination weigher of FIG. FIG. 3 is a schematic side view of the semi-automatic combination weigher of FIG. FIG. 4 is a schematic front view showing an arrangement example of the semi-automatic combination weigher and the packaging machine of FIG. FIG. 5 is a block diagram showing a control system of the semi-automatic combination weigher of FIG. FIG. 6 is a schematic plan view of a semi-automatic combination weigher according to another embodiment of the present invention. FIG. 7 is a schematic side view of the semi-automatic combination weigher of FIG. FIG. 8 is a schematic side view of the semi-automatic combination weigher of FIG. FIG. 9 is a schematic plan view of a semi-automatic combination weigher according to still another embodiment of the present invention. FIG. 10 is a schematic front view of the semi-automatic combination weigher of FIG. FIG. 11 is a schematic side view of the semi-automatic combination weigher of FIG. FIG. 12 is a schematic plan view of a semi-automatic combination weigher according to another embodiment of the present invention. FIG. 13 is a schematic front view of the semi-automatic combination weigher of FIG. FIG. 14 is a schematic side view of the semi-automatic combination weigher of FIG. FIG. 15 is a schematic side view of a semi-automatic combination weigher according to still another embodiment of the present invention. FIG. 16 is a schematic front view showing an arrangement example of the semi-automatic combination weigher and the packaging machine of FIG. FIG. 17 is a schematic plan view of a conventional semi-automatic combination weigher. FIG. 18 is a schematic front view of the conventional semi-automatic combination weigher of FIG. FIG. 19 is a schematic side view of the conventional semi-automatic combination weigher of FIG. FIG. 20 is a schematic plan view of another conventional semi-automatic combination weigher. FIG. 21 is a schematic front view of the conventional semi-automatic combination weigher of FIG. FIG. 22 is a schematic side view of the conventional semi-automatic combination weigher of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is a schematic plan view of a semi-automatic combination weigher according to an embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a side view thereof, and FIG. It is a front view which shows the example of arrangement | positioning with a packaging machine.

  The combination weigher 1 of this embodiment is a semi-automatic combination weigher that manually supplies an object to be weighed, and the object to be weighed is not particularly limited, but raw meat such as chicken (broiler), fish and shellfish such as squid and skipjack For example, it is suitable for weighing objects to be weighed and having a relatively large unit weight (weight per piece).

  This semi-automatic combination weigher 1 has a main body 2 that performs the combination weighing of the objects to be weighed, and operation control parameters of the combination weigher 1, such as setting and operation of a target combination weight necessary for combination calculation, an allowable upper limit value, etc. And an operation setting display unit 3 for displaying the situation, and in this embodiment, the objects to be weighed within the predetermined weight range after the combination weighing are arranged at the rear stage of the combination weigher 1 as shown in FIG. Two upper and lower transport conveyors 4 and 5 constituting two transport systems each transporting to the packaging machine 25 are provided.

  In this embodiment, as shown in FIG. 4, the combination weigher 1 matches the height at which the objects to be weighed are transported from the conveyors 4 and 5 with the height of the input funnel 26 of the packaging machine 25 that receives the objects to be weighed. In addition, it is installed on the gantry 27. The worker goes up the stairs 28 and works on the work table 29. The packaging machine 25 of this embodiment is a bag-feeding type packaging machine that receives an object to be weighed from the transport conveyors 4 and 5 by an input funnel 26, fills a pre-formed bag, and performs vacuum packing.

As shown in FIG. 3, the main body 2 of the combination weigher 1 includes a substantially U-shaped base 6, and a top plate 7 is provided on the base 6. As shown in FIG. 1, the top plate 7 has a plurality of, in this embodiment, nine input ports 8 ₁ to 8 ₉ for an operator to grab and input an object to be weighed. It is formed so as to be arranged in a line along (the left-right direction in FIGS. 1, 2 and 4).

Nine weighing hoppers 9 _{1 to} 99 are individually provided below the input ports 8 ₁ to 8 ₉ , and the weighing hoppers ₉ are disposed on the base 6 as shown in FIG. _{1-9 9} nine weighing sensors 10 ₁ to 10 ₉ of a load cell connected individually are stored.

Nine below the respective weighing hoppers 91 _to 93 _9, as shown in FIG. 3, each pair of the objects to be weighed are supplied from the respective weighing hoppers 91 _to 93 ₉ memory hoppers 11 ₁ to 11 _9, 12 _{1 to} 12 ₉ are arranged along the front-rear direction (the left-right direction in FIG. 3, the up-down direction in FIG. 1). These 18 memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ are supported by the base 6.

Each of the weighing hoppers 9 _{1 to} 9 ₉ accommodates and weighs the objects to be weighed introduced from the input ports 8 ₁ to 8 ₉ , respectively. The base 6 accommodates a control circuit (not shown) which will be described later.

As shown in FIG. 3, each of the weighing hoppers 9 _{1 to} 9 ₉ has two double-opening discharge gates 9 ₁ a to 9 ₉ a and 9 ₁ b to _{9 9} b. These two gates 9 ₁ a to 9 ₉ a and 9 ₁ b to _{9 9} b can be opened and closed independently, and either one of the gates 9 _{1 a to 9 9} a (or 9 ₁ b to 9 9 ₉ b) By opening, the object to be weighed is placed in one of the memory hoppers 11 _{1 to} 11 ₉ (or 12 _{1 to} 12 ₉ ) of the pair of memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 _{9 in} the front-rear direction. It is configured so that it can be selectively supplied.

Each of the memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ is also provided with two open gates 11 ₁ a to 11 ₉ a, 11 ₁ b to 11 ₉ b; 12 ₁ a to 12 ₉ a, 12 ₁ b to 12 ₉ b. These two discharge gates 11 ₁ a to 11 ₉ a, 11 ₁ b to 11 ₉ b; 12 ₁ a to 12 ₉ a and 12 ₁ b to 12 ₉ b can be opened and closed independently. , By opening one of the gates 11 ₁ a to 11 ₉ a (or 11 ₁ b to 11 ₉ b); 12 ₁ a to 12 ₉ a (or 12 ₁ b to 12 ₉ b), It is configured so that the discharge direction can be selected and discharged to the upper conveyor 4 or the lower conveyor 5.

That is, the gates 11 ₁ a to 11 ₉ a, 11 ₁ b to 11 ₉ b for discharging the memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ ; 12 ₁ a to 12 ₉ a, 12 ₁ b to 12 _When the inner discharge gates 11 ₁ b to 11 ₉ b; 12 ₁ a to 12 ₉ a are opened, the object to be weighed is discharged to the upper conveyor 4. When the outer discharge gates 11 ₁ a to 11 ₉ a; 12 ₁ b to 12 ₉ b, which are the other discharge gates, are opened, the object to be weighed is transferred to a lower transfer conveyor having a wide transfer width. 5 can be discharged.

  FIG. 5 is a block diagram showing a control system of this embodiment, and parts corresponding to those in FIGS. 1 to 4 are given the same reference numerals.

The combination weigher 1 of this embodiment includes a control circuit 13. The control circuit 13 controls each unit and stores a CPU unit 14 and a control program as a calculation control unit that performs combination calculation. , a memory unit 15 for such weight value is stored, the weighing hoppers 91 _to 93 gates 9 _{1 9 a~9 9 a, 9 1 b~9} 9 b weighing hopper gate driving circuit unit 16 for opening and closing the Open and close the gates 11 ₁ a to 11 ₉ a and 11 ₁ b to 11 ₉ b of the memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ ; 12 ₁ a to 12 ₉ a and 12 ₁ b to 12 ₉ b A gate drive circuit unit 17 for the memory hopper, an A / D conversion circuit unit 18 that converts an analog signal from each of the weighing sensors 10 ₁ to 10 ₉ into a digital signal, and an upper conveyor drive circuit that drives the upper conveyor 4 Part 19 and the lower conveyance conveyor A lower conveyor drive circuit 20 for driving the Beya 5, and an I / O circuit part 21 connected to the packaging machine 25.

  The digital signal from the A / D conversion circuit unit 18 is converted into a measurement value in the CPU unit 14.

CPU portion 14, the weighing hoppers 91 _to 93 ₉ to weigh the weight of the supplied objects to be weighed to the weighing hopper 91 _to 93 while the gate 9 ₁ for discharge of the ₉ A through 9 ₉ a (or 9 ₁ b~9 ₉ b) by opening a dropping the objects to be weighed to the weighing hopper 91 _to 93 ₉ an empty memory hoppers 11 ₁ to 11 _9, 12 ₁ to 12 _9. The weights of the objects to be weighed dropped on the memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ are stored in the memory unit 15 by the CPU unit 14.

For example, when the objects to be weighed are weighed by the weighing hoppers 9 _{1 to} 9 ₉ shown in FIG. 3 and the gates 9 ₁ b to _{9 9} b on the front side (right side in FIG. 3) are opened to drop the objects to be weighed, Are stored in the memory unit 15 as the weight values of the objects to be weighed in the memory hoppers 12 _{1 to} 12 ₉ . Then weighed objects to be weighed in the weighing hoppers 91 _to 93 _9, when dropping the objects to be weighed Open gate 9 ₁ A through 9 ₉ a of the rear side (left side in FIG. 3), the rear of the memory hoppers The weight values of the objects to be weighed 11 _{1 to} 11 ₉ are stored in the memory unit 15.

The CPU unit 14 performs the combination calculation at the timing of the combination calculation at a constant time interval. In this combination calculation, the weights of the objects to be weighed in the memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ are variously combined, and the combined total weight is equal to the target combination weight or the allowable weight closest to the target combination weight Search for combinations that are within range.

  In this embodiment, in order to shorten the time required to transport the objects to be weighed, which have been combined by the combination calculation, to the subsequent packaging machine 25 and to improve the weighing processing capacity, Two transport systems comprising transport conveyors 4 and 5 are provided.

Furthermore, the CPU unit 14 performs a combination calculation, and when there is a combination in which the combined total weight is equal to the target combination weight or within an allowable weight range closest to the target combination weight, that is, when the combination is established, 11 ₁ a to 11 ₉ a, 11 ₁ b to 11 ₉ b; 11 ₁ b to 11 ₉ b for discharging the memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ via the memory hopper gate driving circuit unit 17. ₉ b, 12 ₁ b to 12 ₉ b are controlled to open and close, and the objects to be weighed in the memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ selected in combination are transferred to the upper conveyor 4 or the lower conveyor. 5 is discharged to one of the conveyors.

The CPU unit 14 alternately switches the transport conveyor for discharging the objects to be weighed in the selected memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ every time a combination is established by performing a combination calculation.

In other words, the CPU unit 14 performs a combination calculation, and when the combination is established, the discharge gates 11 ₁ a to 11 ₉ a and 11 ₁ b of the selected memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ are selected. -11 ₉ b; 11 ₁ b to 11 ₉ b, 12 ₁ b to 12 ₉ b, for example, the inner discharge gate 11 ₁ b to 11 ₉ b; 12 ₁ a to 12 ₉ a is opened, The objects to be weighed are discharged to the upper conveyor 4, and the upper conveyor 4 is driven in response to the input of the discharge command signal from the packaging machine 25 to transfer the objects to be weighed to the packaging machine 25. When the conveyance of the object to be weighed by the conveyor 4 to the packaging machine 25 is completed, the CPU unit 14 stops driving the conveyor 4 and transmits a discharge completion signal to the packaging machine 25.

When the combination is established by performing the combination calculation of the next cycle, the gates 11 ₁ a to 11 ₉ a and 11 ₁ b to 11 ₉ b for discharging the selected memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ are used. Among 11 ₁ b to 11 ₉ b and 12 ₁ b to 12 ₉ b, the outer discharge gate 11 ₁ a to 11 ₉ a; 12 ₁ b to 12 ₉ b is opened, and the object to be weighed is The product is discharged to the transport conveyor 5, and the lower transport conveyor 5 is driven in response to the input of the discharge command signal from the packaging machine 25, and the object to be weighed is transferred to the packaging machine 25. When the conveyance of the object to be weighed by the conveyor 5 to the packaging machine 25 is completed, the CPU unit 14 stops driving the conveyor 5 and transmits a discharge completion signal to the packaging machine 25.

In this way, each time a combination is made by performing a combination operation, the objects to be weighed in the selected memory hoppers 11 _{1 to} 11 ₉ , 12 _{1 to} 12 ₉ are transferred to the upper transfer conveyor 4 and the lower transfer conveyor 5. In response to the input of the discharge command signal from the packaging machine 25 in FIG. 4, the corresponding conveyors 4 and 5 are driven to transfer the objects to be measured to the packaging machine 25. Memory hoppers 11 _{1 to} 11 ₉ , 12 _{1 to} 12 selected in combination with the other transport conveyor 5 (or 4) even when the objects to be weighed are being transported by the transport conveyor 4 (or 5) _Nine objects to be weighed can be discharged and transported, reducing waiting time. As a result, compared to the conventional example having only one conveyor, the time required to transport the objects to be weighed in combination to the subsequent packaging machine 25 can be shortened, and the weighing processing capacity can be improved. Can do.

  In addition, when a so-called reject is performed, a weight-defective object whose combination is not established is discharged to a conveyor, transported in the opposite direction to the packaging machine, and discharged to a collection container. While the object to be weighed was being conveyed in the reverse direction by the conveyor, even if the combination was calculated and the combination was established, it could not be discharged to the conveyor, and it took time to return to normal from the reject. .

 On the other hand, according to this embodiment, an object to be weighed in which a combination is not established is discharged to one conveyor 4 (or 5) and is being conveyed in the opposite direction to the packaging machine 25. However, when the combination calculation is performed and the combination is established, it can be discharged to the other transport conveyor 5 (or 4) and transported to the packaging machine 25, so that it is possible to shorten the time required to return to normal from the reject.

In this embodiment, the objects to be weighed in the memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ selected for the combination are discharged to the upper conveyor 4 or the lower conveyor 5 from the packaging machine 25. In response to the input of the discharge command signal, the upper transfer conveyor 4 or the lower transfer conveyor 5 is driven to transfer the objects to be weighed to the packaging machine 25. However, as another embodiment of the present invention, each transfer conveyor 4 and 5 are continuously driven, and in response to the input of the discharge command signal from the packaging machine 25, the objects to be weighed in the memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ selected for the combination are loaded. Alternatively, it may be discharged alternately to the upper conveyor 4 or the lower conveyor 5.

(Embodiment 2)
6 is a schematic plan view of a semi-automatic combination weigher according to another embodiment of the present invention, FIG. 7 is a front view thereof, FIG. 8 is a side view thereof, and corresponds to the above-described first embodiment. Parts are given the same reference numerals.

In the combination weigher 1 ₁ semiautomatic this embodiment, the memory hoppers is not provided, as shown in FIG. 6, the top plate 7, nine pieces along the lateral direction (horizontal direction in FIG. 6) A total of 18 inlets 8 ₁ to 8 ₁₈ are formed in two rows in the front and rear. A total of 18 weighing hoppers 9 _{1 to} 9 ₁₈ corresponding to each of the input ports 8 ₁ to 8 ₁₈ are arranged below the respective inlets 8 ₁ to 8 ₁₈ . The objects to be weighed are directly supplied to the respective weighing hoppers 9 _{1 to} 9 ₁₈ from the input ports 8 ₁ to 8 ₁₈ . As shown in FIG. 8, weighing sensors 10 ₁ to 10 ₁₈ including load cells are connected to the weighing hoppers 9 _{1 to} 9 ₁₈ , respectively. Weight of each inlet 8 _{1-8 18} each weighing from Hoppahoppa 91 _to 93 ₁₈ objects to be weighed supplied directly, it is weighed by the weighing sensor 10 ₁ to 10 _18.

In this embodiment, the weights of the objects to be weighed in the weighing hoppers 9 _{1 to} 9 ₁₈ are variously combined, and the combination total weight is equal to the target combination weight or within the allowable weight range closest to the target combination weight. The combination calculation to be performed is performed, and the objects to be weighed from the weighing hoppers 9 _{1 to} 9 ₁₈ selected when the combination is established are alternately discharged to the upper conveyance conveyor 4 or the lower conveyance conveyor 5 to obtain the above-described embodiment. Similarly, it is conveyed to the packaging machine 25.

  Other configurations and effects are the same as those of the first embodiment.

(Embodiment 3)
Figure 9 is a semi-automatic combination weigher 1 ₂ schematic plan view according to still another embodiment of the present invention, FIG. 10 is a front view thereof, FIG. 11 is a side view, the above-described embodiments 1 The parts corresponding to are assigned the same reference numerals.

In the above-described first embodiment, the two transport lines, but was composed of conveyors 4 and 5 of the upper and lower stages, parallel in semiautomatic combination weigher 1 ₂ of this embodiment, two transport lines, at the same height It is comprised by the conveyance conveyor 30 of the center of the provided three conveyance conveyors, and the conveyance conveyors 31a and 31b of the both sides.

In the combination weigher 1 ₂ of this embodiment, as in the first embodiment described above, the combination of the weight of the memory hoppers 11 ₁ to 11 _9, 12 ₁ to 12 ₉ of the objects to be weighed variously combined total weight, target combinations The combination calculation is performed to search for a combination within the allowable weight range that is equal to the weight or closest to the target combination weight. When the combination is established, the memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ selected by the combination are selected. The objects to be weighed are alternately discharged to the central conveyor 30 and the conveyors 31a and 31b on both sides thereof.

That is, when the combination calculation is performed and the combination is established, the discharge gates 11 ₁ a to 11 ₉ a and 11 ₁ b to 11 ₉ b of the selected memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ ; 11 ₁ b to 11 ₉ b, 12 ₁ b to 12 ₉ b, for example, the inner discharge gate 11 ₁ b to 11 ₉ b; 12 ₁ a to 12 ₉ a is opened, and the object to be weighed is The material to be weighed is transported to the packaging machine 25.

When a combination is established by the next combination calculation, the discharge gates 11 ₁ a to 11 ₉ a and 11 ₁ b to 11 ₉ b of the selected memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ ; 11 ₁ b -11 ₉ b, 12 ₁ b to 12 ₉ b, the outer discharge gates 11 ₁ a to 11 ₉ a; 12 ₁ b to 12 ₉ b are opened, and the objects to be weighed are transported on both sides of the conveyor 31a, The material to be weighed is discharged to 31b and transferred to the packaging machine 25.

In this embodiment, since the front-rear direction each pair of memory hoppers 11 ₁ to 11 _9, 12 ₁ to 12 ₉ are disposed close, a pair of front-rear direction memory hoppers 11 ₁ to 11 _9, 12 _{1-12 9} of the gate 11 ₁ for discharging the inner b~11 ₉ b, there is a 12 ₁ A～12 ₉ interferes possibility and a simultaneously open. Therefore, in this embodiment, during the combination calculation, the discharge gates 11 ₁ b to 11 ₉ b and 12 _{1 a to} the inner sides of the pair of front and rear memory hoppers 11 _{1 to} 11 ₉ and 12 _{1 to} 12 ₉ are used. The memory hopper is selected so that 12 ₉ a does not need to be opened simultaneously.

  Other configurations and effects are the same as those of the first embodiment.

(Embodiment 4)
Figure 12 is a semi-automatic schematic plan view of a combination weigher 1 ₃ according to another embodiment of the present invention, FIG. 13 is a front view thereof, FIG. 14 is a side view thereof, to a third embodiment of the above Corresponding parts bear the same reference symbols.

In the combination weigher 1 ₃ semiautomatic this embodiment, the memory hoppers is not provided, the top plate 7, the total of 18 in two rows each of nine and forth along the left-right direction inlet 8 _{1-8 18} are formed, and a total of 18 weighing hoppers 9 _{1 to} 9 ₁₈ are arranged corresponding to the respective charging ports 8 ₁ to 8 ₁₈ . The objects to be weighed are directly supplied to the respective weighing hoppers 9 _{1 to} 9 ₁₈ from the input ports 8 ₁ to 8 ₁₈ . As shown in FIG. 14, each of the weighing hoppers 9 _{1 to} 9 ₁₈ is connected to weighing sensors 10 ₁ to 10 ₁₈ each consisting of a load cell, and is to be weighed directly supplied from the input ports 8 ₁ to 8 _18. The weight of the object is weighed by each weighing sensor 10 ₁ to 10 ₁₈ .

In this embodiment, the weights of the objects to be weighed in the weighing hoppers 9 _{1 to} 9 ₁₈ are variously combined, and the combination total weight is equal to the target combination weight or within the allowable weight range closest to the target combination weight. The combination operation to be searched is performed, and the objects to be weighed from the weighing hoppers 9 _{1 to} 9 ₁₈ selected after the combination is established are alternately discharged to the central transfer conveyor 30 or the transfer conveyors 31a and 31b on both sides, and the packaging machine 25 Transport to.

In this embodiment, the width of the central transfer conveyor 30 is wider than the width of the transfer conveyors 31a and 31b on both sides, whereby the weighing hoppers 9 _{10 to} 9 ₁₈ and 9 _{1 to} 9 _{9 in} the front-rear direction are arranged. it is possible to widen the gap, the pair of front-rear direction of the weighing hoppers 9 _{10-9 18,} 9 _to 93 ₉ gates 9 ₁₀ inner for discharge of b~9 ₁₈ b, 9 _1a ~9 _9a simultaneously open Even if it does not interfere.

  Other configurations and effects are the same as those of the third embodiment.

(Other embodiments)
In each of the above-described embodiments, the supply hopper is not provided. For example, as illustrated in FIG. 15, supply hoppers 32 _{1 to} 32 ₉ and weighing hoppers 9 _{1 to} 9 ₉ and 9 _{10 to} 9 ₁₈ are provided. The present invention can be similarly applied to configurations and other hopper configurations.

Further, as shown in FIG. 16, the present invention a semiautomatic combination weigher, for example, the objects to be weighed which have been discharged from the semi-automatic combination weigher 1 ₂ embodiment 3 described above, the conveyor 30; linked to 31a, 31b You may make it convey upward by the interlocking conveyor 33, and throw it into the packaging machine 25. FIG.

  In each of the embodiments described above, two transport systems are provided. However, the present invention is not limited to two, and three or more transport systems may be provided.

  The present invention is useful as a semi-automatic combination weigher.

1-1 ₄ semiautomatic combination weigher 3 operation setting display section 4,5,30,31A, 31b conveyors 91 _to 93 ₉ weighing hoppers 10 ₁ to 10 ₉ Weighing sensor 11 ₁ to 11 _9, 12 ₁ to 12 ₉ Memory hopper 13 Control circuit 14 CPU unit 25 Packaging machine

Claims (4)

A semi-automatic combination weigher that manually feeds an object to be weighed,
A plurality of hoppers to which the objects to be weighed are supplied;
Calculation control means for performing a combination calculation based on the weight of the objects to be weighed supplied to the plurality of hoppers and discharging the objects to be weighed from the hopper selected by the combination calculation;
A transporting means disposed below the hopper and transporting an object to be weighed discharged from the hopper to a subsequent apparatus;
The transport means has at least two transport systems, and in each transport system, the objects to be weighed from the hopper selected by the combination calculation are discharged as transport units, respectively.
A combination weigher characterized by that. The two transport systems include two transport conveyors arranged in two upper and lower stages,
The hopper has a pair of double-opening discharge gates that open and close its bottom,
The arithmetic control means controls the opening and closing of the pair of discharge gates, and opens one discharge gate of the pair of discharge gates so that the object to be measured is discharged to an upper conveyor. , The other discharge gate is opened, and the object to be weighed is discharged to the lower conveyor.
The combination weigher according to claim 1. The two transport systems include a center and three transport conveyors arranged in parallel on both sides thereof, the central transport conveyor corresponds to one transport system, and the transport conveyors on both sides correspond to the other transport system. And
The hopper has a pair of double-opening discharge gates that open and close its bottom,
The arithmetic control means controls opening and closing of the pair of discharge gates, and opens one discharge gate of the pair of discharge gates to discharge the object to be measured to the central transfer conveyor. The other discharge gate is opened and the objects to be weighed are discharged to the conveyors on both sides.
The combination weigher according to claim 1. The calculation control means alternately discharges the objects to be weighed in the selected hopper to the two transport systems every time the hopper is selected by the combination calculation.
The combination weigher according to claim 2 or 3.

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