JPH0733139Y2 - Combination weighing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is suitable for a combination weighing device, particularly for weighing items that are easily damaged or lose their shape, or items that are required to be collected in a uniform direction. A combination weighing device.

(Prior Art) For example, as described in Japanese Utility Model Laid-Open No. 64-5124 and Japanese Patent Application Laid-Open No. 1-250829, articles are respectively fed into a plurality of weighing hoppers and weighed by each weighing hopper. By performing a combination calculation based on the article weight and selecting a combination having a combination weight that is the target weight or a value closest thereto, and discharging only the articles in the weighing hopper corresponding to the combination, the target weight or A combination weighing device is known which obtains an article whose weight is closest to this.

(Problems to be solved by the invention) Incidentally, in the combination weighing device as described above, based on the selected combination, the articles in the weighing hopper corresponding to the combination are arranged in a collecting conveyor arranged below the hopper. It is designed to be dropped and discharged, but depending on the items to be handled, there is a risk that it may be damaged when dropped on the collection conveyor, or it may lose its shape and significantly reduce the product value. . For this reason, it has been unsuitable for combined weighing of articles that are particularly susceptible to damage or lose their shape and require special handling.

Further, in this type of hopper type combination weighing device, the articles discharged from the weighing hopper are collected on the collecting conveyor in a non-directional manner, and the articles are collected in a predetermined direction. Therefore, it is not suitable for the case of combining and weighing articles that require directionality at the time of collection.

The present invention addresses the above situation, and as a combination weighing device, in particular, a combination weighing device suitable for weighing items that are easily damaged or lose their shape, or items that are required to be collected in a uniform direction. The purpose is to provide.

(Means for Solving the Problems) In order to solve the above problems, the present invention is configured as follows.

First, the device according to the first claim of the present application (hereinafter referred to as the first device) supplies articles to a plurality of weighing machines, and performs combination calculation based on the weight of articles weighed by each weighing machine. In a combination weighing device in which the weight is selected to be a target weight or a combination closest to the target weight and the articles are discharged from the weighing machine corresponding to the combination, the articles supplied by each of the plurality of weighing machines And a weight detection means for detecting the weight of the article supplied on the conveyor, and these weighing machines are arranged in parallel in the same direction, and the transportation in each weighing machine is performed. On the discharge end side of the conveyor, there is a collecting conveyor that travels in a direction orthogonal to the article discharging direction by these transport conveyors and collects the articles discharged from each transport conveyor. And it said that it has set.

In addition to the structure of the first aspect, the device according to the second claim of the present application (hereinafter, referred to as the second device) is arranged near one side of each weighing machine and supplied from one supply part. It is characterized in that a distribution supply device is provided for branching the formed articles to the supply end side of the conveyor in each of the weighing machines and distributing and supplying the articles to the weighing machines from which the articles have been discharged.

(Operation) In both the first and second inventions, the weight of the articles respectively supplied on the conveyors constituting each weighing machine is detected by the weight detection means, and the combination calculation is performed based on the detected weight. The combination weight that is the target weight or a value closest to this is selected, the article is discharged from the conveyor of the weighing machine that corresponds to the combination, and the discharged article is collected by the collecting conveyor. . As a result, the target weight or an article having a weight closest to the target weight can be obtained.The articles are conveyed in the horizontal direction by the conveyors, and the articles are also conveyed in the horizontal direction from the conveyors. Since the articles are delivered to the collecting conveyor which is to be used, the movement or collection of the articles from the carrying conveyor to the collecting conveyor is carried out very smoothly, whereby the articles to be combined and weighed are damaged particularly carefully. It is possible to satisfactorily perform combination weighing even for articles that are easily or easily lost in shape and are difficult to perform combination weighing by the conventional hopper type combination weighing device.

Further, since the collecting conveyor travels in a direction orthogonal to the article discharging direction by these transporting conveyors on the discharge end side of each transporting conveyor, the posture of the article delivered to the collecting conveyor from each transporting conveyor at the time of its delivery Therefore, it is particularly effective in the case of combining and weighing articles for which directionality is required at the time of collection.

By the way, as described above, it is required to efficiently supply the articles to the weighing machine from which the articles have been discharged based on the selected combination. The articles that are placed close to one side of the machine and that are supplied from the one supply section are branched to the supply end side of the transport conveyor of each weighing machine, and the articles are distributed and supplied to the weighing machines from which the articles are discharged. Since the distribution supply device is provided, the articles are automatically distributed and supplied to the weighing machine from which the articles are discharged. The troublesome work of each worker supplying articles to the weighing machine is no longer required, the workability is further improved, and the automation at the time of this kind of combination weighing can be further promoted. Further, by connecting the supply unit to the manufacturing line side of the article to be combined and weighed, it is possible to fully automate the manufacturing of the article to the combined and weighing.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall perspective view of a combination weighing device according to the present embodiment. This combination weighing device 1 weighs an article (a) and performs a combination calculation based on the weighing result to perform a combination. A weighing machine main body 2 for selecting a combination in which the weight becomes a target weight or a value closest to the target weight, a distribution supply device 3 arranged near the front end of the weighing machine main body 2, and a front end of the distribution supply device 3. And an introducing device 4 disposed in proximity to the section.

As shown in FIGS. 1 and 2, a plurality of supply conveyors are provided on the frame 5 of the weighing machine main body 2 via a base 6.
7 _{1 to} 7 ₇ are arranged in parallel in the same direction, and each of these supply conveyors 7 _{1 to} 7 ₇ is wound between both end portions of each conveyor frame 8 whose upper surface portion is a belt receiving portion. At the same time, it is driven by a drive motor 9 attached to the lower surface of each reuleme 8. Further, a plurality of weighing conveyors 10 ₁ to 10 ₇ that constitute the respective supply conveyors 7 _{1-7 7} pair are arranged in parallel in the same direction, each of these measuring conveyor 10 ₁ to 10 _7, the upper surface portion of the belt Transport conveyors 12 _{1 to} 12 ₇ which are wound between both ends of each conveyor frame 11 serving as a receiving portion and receive the articles (a) ... (a) supplied from the supply conveyors 7 _{1 to} 7 _7. , Each conveyor frame 11 is composed of each weighing device 13 _{1 to} 13 _{7 including} a load cell and the like attached to the upper portion, and each transfer conveyor by a drive motor 14 attached to the lower surface of each conveyor frame 11 12 _{1 to} 12 ₇ are designed to be driven. Furthermore, each of the above measuring conveyors
Transport conveyors 12 ₁ to ₁ that make up 10 ₁ to 10 ₃ and 10 ₅ to 10 ₇
On the discharge end side of 2 ₃ , 12 _{5 to} 12 ₇ , these conveyors 12
Collection conveyor 15 that collects articles (a) discharged from _{1 to} 12 ₃ and 12 _{5 to} 12 ₇ by traveling in a direction orthogonal to the discharge direction.
₁ , 15 ₂ are provided and these collecting conveyors 15 ₁ , 1
5 _2, are driven by a drive motor 17 mounted respectively on the lower surface of the conveyor frame 16. A collecting chute 18 that collects the articles (a) collected by the conveyors 15 ₁ and 15 ₂ at one place is provided between the collecting conveyors 15 ₁ and 15 _2. It is supported on the frame 5 of the weighing machine main body 2 via the support brackets 19, 19.

Further, as shown in FIG. 1, the above meter body 2, and a display unit 20b and the input unit 20a, the article which has been weighed by the respective weighing units _{131-134 7} (a) ... (i ) with the combination weight performs combination calculation based on the weight select a combination of the target weight or closest value thereto, the feed conveyor 7 _{1-7 7} on the basis of this, the transport conveyor 12 ₁ to 12 ₇ ,
A control device 20 for controlling the operations of the collecting conveyors 15 ₁ and 15 ₂ and the distribution supply device 3 is provided.

On the other hand, the distribution supply device 3 has a conventionally well-known structure, and as shown in FIG. 1, the distribution supply device 3 includes a large number of endless frames which are horizontally crossed between the left and right frames 21 and 21. 22 and a plurality of transport plates 23 supported on the pair of rod members 22, 22 so as to be slidable in the axial direction thereof, and the lower surface of each transport plate 23 has a pin member. (Not shown) is fixed. Then, the rod members 22 ...
22 and the respective transport plates 23 ... 23 constitute an endless conveyor mechanism, and both axial end portions of the rod members 22 ... 22 are provided with appropriate transmission means such as a chain mechanism (not shown).
22 are connected to each other so that the rod members 22 ... 22 and the transport plates 23 ... 23 are connectedly moved in a predetermined direction along the left and right frames 21, 21. Further, by engaging with a pin member fixed to the lower surface of each of the transport plates 23 ... 23,
A predetermined number of the transport plates 23 ... 23, that is, the transport plates 23 ... 23 on the front end portion of the weighing machine body 2 in which the number of the transport plates 23. Guide rails (not shown) for allocating the supply conveyors 7 _{1 to} 7 ₇ arranged in parallel to each other toward the supply start end side are arranged.

Further, the introduction device 4 has an introduction conveyor 25 which is wound on the frame 24 and driven by an appropriate driving means (not shown), and the article introduced into the supply section A at one end of the conveyor 25. (b) is conveyed to the front end of the sorting feeder 3, so as to be supplied onto the supply conveyor 7 _{1-7 7} sorting is by the carrier plate 23 ... 23 in the distribution device 3 ing.

Next, the control system of the combination weighing device 1 will be described. As shown in FIG. 3, the control device 20 has an input unit 20 for setting and inputting a target weight and the like during combination calculation.
a and a display unit 20b for displaying various data and the like are connected to a control unit 20c including a CPU, and the control unit 20c includes the articles (a) from each of the weighing instruments 13 _{1 to} 13 _7. Is input, and based on this, the controller 20c performs a combination calculation to select a combination having a target weight or a value closest to the target weight. In addition, from the control unit 20c, the distribution supply device 3 and the supply conveyors 7 _{1 to} 7
Drive motors 9 for driving ₇ ... 9 and conveyors 12 _{1 to} 12
Drive motors 14 ... 14 for driving ₇ and collecting conveyor 1
5 _1, 15 control signals to the drive motors 17, 17 for driving the ₂ is to be outputted. As a result, the article (a) is discharged from any _{one of the} transport conveyors 12 _{1 to} 12 ₇ in correspondence with the target weight or the combination having the value closest thereto, and the discharged article (a) is collected. ₁ , 1
5 ₂ while being collected by, adapted to be collected in one place by collecting chute 18.

Next, a description will be given of the operation of the present embodiment, as shown in FIG. 1, the transfer conveyor 12 of the respective measuring conveyor 10 ₁ to 10 ₇
The weights of the articles (a) ... (a) respectively supplied on _{1 to} 12 ₇ are detected by the respective weighing instruments 13 _{1 to} 13 ₇ , and based on this, the combination calculation is performed in the control unit 20c of the control device 20. , The combination weight of which is the target weight or a value closest to the target weight is selected, and the drive motor 14 of any one of the conveyors 12 _{1 to} 12 ₇ is selected according to the combination.
Is driven to discharge the article (a). For example, if the combination of the conveyor 12 _1, 12 _3, 12 _4, 12 _5, 12 ₇ on the article (A) is selected, the article from their conveyor (a) ... (it) is discharged The discharged articles (a) ... (a) are collected by the collecting conveyors 15 ₁ and 15 _{2 and} collected at one place by the collecting chute 18 to have the target weight or the weight closest to the target weight. (A) ... (a) will be obtained. And
Based on the selected combination, each of the above conveyors 12 ₁ , 1
When the article (a) is discharged from 2 ₃ , 12 ₄ , 12 ₅ , and 12 ₇ , the corresponding supply conveyors 7 ₁ , 7 ₃ , 7 ₄ , 7 ₅ , and 7 ₇ are transport conveyors 12 ₁ and 12 _3, 12 _4, 12 _5, 12 ₇ synchronously driven with said respective supply conveyors 7 _1, 7 _3, 7 _4, 7 _5, 7 articles that were waiting on the ₇ (a) ... (i) Are supplied to the conveyors 12 ₁ , 12 ₃ , 12 ₄ , 12 ₅ , 12 _{7 so as} to replace the articles (a) ... (a) discharged by the combination, and subsequently, the distribution device 3 by the controller 20. Is controlled and the articles (a) supplied to the supply section A of the introduction conveyor 24 in the introduction device 4 are sorted by the respective transport plates 23 ... 23 in the sorting device 3 and are transported to the above-mentioned transport conveyors 12 ₁ , 12 ₃ , 12 ₄ , 12 ₅ ,
It is supplied to the supply conveyors 7 ₁ , 7 ₃ , 7 ₄ , 7 ₅ , and 7 ₇ forming a pair with 12 ₇ . Then, the control device 20 again executes a new combination calculation, and thereafter, the same operation as described above is repeated.

As described above, when the article (a) is discharged from each of the conveyors 12 _{1 to} 12 ₇ based on the selected combination, the article (a) is horizontally transferred from each of the conveyors 12 _{1 to} 12 _7. It is designed to be discharged onto the collecting conveyors 15 ₁ and 15 ₂ so that the movement (collection) of the article (a) from these conveying conveyors 12 _{1 to} 12 ₇ to the collecting conveyors 15 ₁ and 15 ₂ is extremely difficult. As a result, the item (a) to be combined and weighed becomes an item that requires special handling and is easily damaged or loses its shape, and is combined by the conventional hopper type combination and weighing device. Even articles that have been difficult to weigh can be satisfactorily combined and weighed.

In addition, the collecting conveyors 15 ₁ and 15 ₂ are the transfer conveyors 12
_{1 to} 12 ₃ , 12 _{5 to} 12 _{7 at} the discharge end side of these conveyors 12
Since traveling to _{1-12 3,} 12 _{5-12 7} direction perpendicular to the article discharge direction by was delivered to the collection conveyor 15 _1, 15 ₂ from the conveyor 12 ₁ to 12 _3, 12 ₅ to 12 ₇ Goods (a) ...
The item (a) is collected while maintaining the posture at the time of delivery, which is particularly effective in the case of combining and weighing articles for which directionality is required at the time of collection.

Furthermore, each transport conveyor 12 ₁ based on the selected combination
When from 12 ₇ article (A) is discharged, that the distribution feeder 3 is controlled article (A) is automatically article on the conveyor that is discharged (a) is supplied becomes, thereby, every time any more articles each conveyor 12 ₁ to 12 ₇ (b) is discharged, in each case, troublesome operations such as the operator supplies the articles (a) on its conveyor Is unnecessary, workability is further improved, and automation in this kind of combination weighing can be further promoted. Furthermore, by connecting the supply unit A at one end of the introduction conveyor 25 to the production line side of the article (a) to be combined and weighed, it is possible to fully automate from the production of the article (a) to the combination and weighing. It will be possible.

Further, the collecting conveyors 15 ₁ and 15 ₂ are arranged so as to collect the articles (a) discharged from the respective conveying conveyors 12 _{1 to} 12 ₃ and 12 _{5 to} 12 ₇ in a direction orthogonal to the discharging direction. By doing so, it becomes possible to configure the entire weighing machine main body 2 in a more compact manner.

In the present embodiment, the conveyors are arranged on the same plane, but in the case where there is a risk that the article may bite between the front and rear conveyors when conveying a short article, the downstream conveyor is It is advisable to provide a step between the front and rear conveyors so that the lower step is provided. Alternatively, the conveyors may be arranged in two rows in abutment with each other and the collecting conveyors arranged in the center of the conveyors may collect the articles laterally.

Further, instead of the collecting chute 18, the collecting conveyor 1
5 _1, 15 by providing a set plate planar shape受支an article (A) collected by _2, with the damage or shapeless of article (A) at the time of collection can be more effectively prevented, It is possible to collect the articles (a) discharged from each of the conveyors 12 _{1 to} 12 ₇ in a more directional manner. Further, the introduction conveyor 25 may be always driven, but it is also possible to configure the introduction conveyor 25 so that its operation is controlled in association with the operation of the distribution supply device 3 controlled by the control device 20. .

(Effects of the Invention) As described above, in both the first and second inventions, articles are discharged from the weighing machine corresponding to the selected combination based on the selected combination. Since the articles are conveyed in the horizontal direction by the conveyer constituting the machine and are also transferred from each conveyer to the collecting conveyor that also conveys the article in the horizontal direction, the movement or collection of the articles from the conveyer to the collecting conveyor is performed. Therefore, the items to be combined and weighed are treated as items that require special handling and that are easily damaged or lose their shape. Even articles that have been difficult to do can be satisfactorily combined and weighed.

Furthermore, since the collecting conveyor travels in the direction orthogonal to the article discharge direction by these transport conveyors on the discharge end side of each transport conveyor, the articles transferred from each transport conveyor to the collection conveyor are in the posture at the time of delivery. Will be collected and maintained, and this is particularly effective in the case of combining and weighing articles for which directionality is required at the time of collection.

Further, in particular, according to the second invention, by the distribution supply device,
The goods are automatically distributed and supplied to the weighing machine from which the goods have been discharged, whereby the worker supplies the goods to the weighing machine each time the goods are discharged from the weighing machine. This eliminates the need for troublesome work, and further improves workability and further facilitates automation in combination weighing. Furthermore, by connecting one supply unit for supplying the articles to the distribution supply apparatus to the production line side of the articles to be combined and weighed,
It is possible to fully automate from the production of the article to the combination weighing.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is an overall perspective view of a combination weighing device according to this embodiment, FIG. 2 is an enlarged sectional view of an essential part of the combination weighing device, and FIG. It is a control system figure of a weighing device. 1 ...... combination weighing apparatus, 3 ...... distribution feeder, 10 ₁ to 10 ₇
…… Weighing machine (weighing conveyor), 12 _{1 to} 12 ₇ …… Conveying conveyor, 13 _{1 to} 13 ₇ …… Weight detecting means (weighing machine), 15 ₁ , 15 ₂ …
… Collection conveyor, A… Supply section, (ii) …… Articles.

Claims (2)

[Scope of utility model registration request] 1. Articles are respectively supplied to a plurality of weighing machines, and a combination operation is performed based on the weights of the articles weighed by each weighing machine to select a combination having a target weight or a value closest to the target weight. Along with the combination weighing device adapted to discharge the articles from the weighing machine corresponding to the combination, each of the plurality of weighing machines was fed onto the conveyor and a conveyor for horizontally feeding the articles fed thereto. And a weight detecting means for detecting the weight of the articles, and these weighing machines are arranged in parallel in the same direction, and the articles are discharged by the conveyors on the discharge end side of the conveyors in each of the weighing machines. Combination weighing, characterized in that a collecting conveyor is arranged to travel in a direction orthogonal to the direction and collect the articles discharged from each conveying conveyor. Location. 2. Articles are respectively supplied to a plurality of weighing machines, and a combination operation is performed based on the weights of the articles weighed by the respective weighing machines to select a combination having a target weight or a value closest to the target weight. Along with the combination weighing device adapted to discharge the articles from the weighing machine corresponding to the combination, each of the plurality of weighing machines was fed onto the conveyor and a conveyor for horizontally feeding the articles fed thereto. It is composed of a weight detection means for detecting the weight of the article, and these weighing machines are arranged in parallel in the same direction, respectively, and are arranged on the discharge end side of the transport conveyor in each weighing machine. And a collecting conveyor that travels in a direction orthogonal to the article discharging direction and collects the articles discharged from the respective conveying conveyors, and is arranged near one side of each of the weighing machines. And a distribution supply device for branching the articles supplied from one supply section to the supply end side of the conveyor in each weighing machine and distributing and supplying the articles to the weighing machine from which the articles have been discharged. A combination weighing device characterized in that