Conveying device, article supplying method and weighing system

Abstract

To make a long article a lump and efficiently supply it to the later stage.SOLUTION: A conveyance device 3 is equipped with a continuously-operated supply conveyor 10, a first shutter 21, a second shutter 22 and control means, and makes a long article W a lump and supplies it to a combination weighing device 2. In such a state that the closed first and second shutters 21, 22 hold the lump article W (immediately after Fig. 2d), the conveyance device opens the first shutter 21 for a predetermined period of time, supplies the lump article W to the weighing device (Fig. 3a), opens the second shutter 22 for a predetermined period of time after the first shutter 21 is closed, conveys the lump article W to the downstream side (Fig. 3b), does not open the first shutter 21 until the prescribed control time elapses, inputs the article W to an input part 14 (Fig. 3C), and makes the second shutter 22 hold the lump article W (immediately after Fig. 2d).SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a conveying device for supplying linear items such as noodles to a downstream device such as a weighing device, and in particular to a conveying device that can supply linear items to the downstream device in the form of blocks, and that allows even an unskilled worker to properly feed the items so that the items are efficiently supplied to the downstream device, and further to a method of supplying items to a downstream device using the conveying device, and a weighing system. [Background technology]

[0002] Patent Document 1 below discloses a combination weighing device. This combination weighing device 1 includes an item supply unit 2 equipped with multiple belt conveyors 6 arranged horizontally at predetermined intervals; a combination weighing unit 7 arranged below each of the multiple belt conveyors 6 and including multiple rows of vertically aligned cups 8 arranged horizontally; a collecting conveyor 13 disposed below the combination weighing unit 7 for transporting the objects W to be weighed so that the combination falls within a target weight range; and a genuine product discharge destination OK disposed near one end of the collecting conveyor 13 for discharging the objects W within the target weight range. Furthermore, a non-genuine product discharge destination NG is disposed adjacent to the genuine product discharge destination OK at a predetermined distance, and one end of the collecting conveyor 13 is movable a predetermined distance so that the objects W can be discharged to the non-genuine product discharge destination NG. According to this invention, when a mixture of multiple types of objects is supplied, non-genuine objects that cannot be used in combination can be separated from genuine objects and discharged by type. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-12760 Summary of the Invention [Problem to be solved by the invention]

[0004] In the combination weighing device 1 described in Patent Document 1, an operator manually loads items into an upstream loading section of the belt conveyor 6. If the items are soft, long items, such as noodles, the noodles must be fed as a single lump to a downstream weighing device. In other words, in a combination weighing device, in order to obtain an item of a target weight from the combination of multiple weighed items, if the noodles were fed to the weighing device in their long form, they would drag backward in the conveyance direction, causing the noodles to protrude from the weighing container of the weighing device, making it difficult to weigh them as a single lump of items.

[0005] A skilled worker might be able to feed the noodles onto the belt in chunks rather than as a straight line. Furthermore, if the belt conveyor is provided with markings at appropriate intervals along the conveying direction to indicate the feeding intervals, it might be possible for a skilled worker to feed the noodles in chunks onto the belt at the specified intervals. However, in reality, the belt conveyor 6 in the feed section 2 of the combination weighing device 1 described above does not operate continuously, but rather intermittently, depending on the item feeding signal output from the combination weighing machine. Therefore, it is unclear when the belt conveyor 6 will start and stop. Furthermore, the noodles on the belt conveyor 6 are often located in a position that cannot be seen due to the mechanism, so even a skilled worker has difficulty maintaining the specified intervals between the noodles in chunks on the belt conveyor 6.

[0006] Furthermore, with the recent labor shortage, it has become increasingly difficult to secure skilled workers, and as a result, users of combination weighing devices are increasingly demanding that manufacturers automate the process.

[0007] The present invention has been made in consideration of the problems in the conventional technology described above, and aims to provide a conveying device that can convert linear articles into blocks and supply them to a downstream device in order to overcome the characteristics of soft, long articles that make automation difficult and improve productivity in downstream devices, and that allows even unskilled workers to properly feed articles so that the articles are efficiently supplied to the downstream device, as well as a method of supplying articles to a downstream device using such a conveying device and a weighing system. [Means for solving the problem]

[0008] The conveying device 3 described in claim 1 is A conveying device 3 for supplying a long object W to a subsequent device 2, a continuously operated supply conveyor 10 having an input section 14 for the article W on the upstream side in the conveying direction A and a downstream side in the conveying direction A disposed above the subsequent device 2; a first shutter 21 provided downstream of the supply conveyor 10 to open and close a conveyance path of the article W by the supply conveyor 10; The supply conveyor 10 is provided downstream of the input portion 14 and upstream of the first shutter 21, and the supply conveyor 10 is provided upstream of the first shutter 21. W a second shutter 22 for opening and closing the transport path; The first shutter 21 is controlled so that the articles W input from the input section 13 to the supply conveyor 10 are prevented from being conveyed by the first shutter 21, and are thereby formed into a lump. The first shutter 21 prevents the transport of the lump-shaped article. W The first shutter 21 is opened for a predetermined time to supply the lump-shaped article W to the subsequent device 2, and after the supply, the second shutter 22 is opened for a predetermined time, and the first shutter 21 is not opened until a control time has elapsed that exceeds the time required for the lump-shaped article W present on the upstream side of the second shutter 22 to reach the first shutter 21. a control means for controlling the The present invention is characterized by the following:

[0010] Claim 2 The conveying device 3 described in claim 1 In the conveying device 3 described in The device further includes a sensor 23 for detecting the article W present on the upstream side of the first shutter 21, The control means is characterized in that it opens the first shutter 21 after the sensor 23 detects the article W and the control time has elapsed.

[0011] Claim 3The method of supplying the item W described in Claim 1 A method for supplying an article W using the conveying device 3 described in The conveying device 3 is placed in a standby state in which the first shutter 21 and the second shutter 22 are closed and both of them prevent the conveyance of the lump-shaped article W and hold it there. By opening the first shutter 21 for a predetermined time, the lump-shaped articles W present on the upstream side of the first shutter 21 are supplied to the subsequent device 2, After the supply, the second shutter 22 is opened for the predetermined time to transport the lump of material W downstream, and the first shutter 21 is controlled not to be opened until the control time has elapsed; The method is characterized in that an item W is inserted into the insertion section 13 where no item W is present, and the second shutter 22 prevents the item W from being transported, causing the item W to form a lump, thereby causing the conveying device 3 to return to the standby state.

[0012] Claim 4 The weighing system 1 described in a continuously operated supply conveyor 10 having an input section 14 for the long article W on the upstream side in the conveying direction A and disposed above the downstream device 2 in order to supply the long article W to the downstream device 2; a first shutter 21 provided downstream of the supply conveyor 10 to open and close a conveyance path of the article W by the supply conveyor 10; a control means for controlling the first shutter 21 so that the articles W input from the input section 14 onto the supply conveyor 10 are prevented from being conveyed by the first shutter 21, and thereby the articles W are formed into a lump; Equipped with a conveying device 3; a weighing device 2 as the subsequent device 2 to which the articles W are supplied by the conveying device 3; of Preparation A weighing system 1 having: The control means is characterized by controlling the first shutter 21 in response to a request signal sent from the weighing device 2. The weighing system 1 according to claim 5 is the weighing system 1 according to claim 4, The first shutter 21 is pivotally supported by a swing shaft, The control means is characterized by opening and closing the first shutter 21 in response to the request signal. [Effects of the Invention]

[0013] According to the conveying device of claim 1, when long objects are fed into the feeding section of the continuously operating supply conveyor, the objects are conveyed by the supply conveyor, but because their movement is prevented by the closed first shutter, they gather in contact with the upstream side of the first shutter and become tangled and clumped together. If the objects remain in their original long shape, or if some of them become clumped but still drag the long parts, the long parts can get caught on peripheral devices when they are fed to subsequent equipment, which can cause problems in processing the objects. However, if the objects are clumped, such problems are less likely to occur and they are easier to handle in subsequent equipment. Furthermore, by opening the first shutter, clumped objects that are prevented from being transported by the first shutter can be supplied to a downstream device. After the supply, the second shutter is opened for a predetermined period of time, allowing the clumped objects that were upstream of the second shutter to be sent to the first shutter. The first shutter is not opened until a control time longer than the time required for the clumped objects to reach the first shutter has elapsed. Therefore, the operator can simply input the objects into the input section when the absence of objects is detected as a signal to input the objects, eliminating the need for skill in timing the input of the objects. The input long objects are transported by the supply conveyor, and are blocked from moving by the closed second shutter, causing them to gather and become tangled together into a clump. Because clumped objects have been held in front of the first shutter until this point, the closed first and second shutters each hold clumped objects. By repeating the above operations, long objects that are difficult to handle can be efficiently input into a clump and supplied to a downstream device.

[0015] Claim 2 According to the conveying device described in the above, the shutter can be opened and the held block of object can be supplied to a downstream device only when a sensor detects an object present upstream of the first shutter and the control time has elapsed.

[0016] Claim 3 According to the article supply method described in [2], when both the first shutter and the second shutter are in a standby state holding lump-shaped articles, the first shutter can be opened to supply the lump-shaped articles to a downstream device. After closing the first shutter, the second shutter is opened to transport the lump-shaped articles downstream, and the first shutter is not opened until a control time has elapsed that exceeds the time required for the lump-shaped articles present upstream of the second shutter to reach the first shutter. During this time, an operator can use the absence of articles in the input section as a signal to input the articles into the input section. This causes the second shutter to hold the lump-shaped articles, and the conveying device can return to the standby state. By repeating the above cycle, it is possible to continuously perform the task of efficiently inputting long articles that are difficult to handle into lumps and supplying them to a downstream device.

[0017] Claim 4 andAccording to the weighing system described in No. 5, when long objects are fed into the feed section of the continuously operating supply conveyor, the objects are transported by the supply conveyor, but because their movement is prevented by the closed first shutter, they gather in contact with the upstream side of the first shutter and become tangled and clumped. If the objects remain in their original long shape, or if some of them become clumped but drag the long part, it becomes difficult to weigh them accurately because the long part gets caught on peripheral devices when they are fed to the subsequent weighing device. However, if the objects are clumped, this problem is less likely to occur, and the weighing in the subsequent weighing device can be carried out more accurately and efficiently. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a schematic front view of a weighing system according to an embodiment. [Figure 2] 3A and 3B are schematic side views showing the structure and continuous operation of a conveying device included in the weighing system of the embodiment. [Figure 3] 3A and 3B are schematic side views showing the structure and continuous operation of a conveying device included in the weighing system of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0019] The configuration of a weighing system according to a first embodiment will be described with reference to FIGS. FIG. 1 is a diagram showing a schematic diagram of the overall configuration of a weighing system 1. As shown in FIG. 1, the weighing system 1 includes a combination weighing device 2 and a conveying device 3 provided above the combination weighing device 2. As will be described in detail later, the conveying device 3 is a device that supplies the objects to be weighed to the combination weighing device 2. The combination weighing device 2 is a device that divides and weighs the long objects W supplied from the conveying device 3, appropriately combines the weighed small objects W, and discharges them in an amount that falls within a target weight range. Examples of the long objects in the embodiment include slender and soft food ingredients, such as various types of noodles and shirataki noodles.

[0020] As shown in FIG. 1, a combination weighing unit 4 is provided on the top of the combination weighing device 2. The combination weighing unit 4 is composed of a large number of cups 5. Each cup 5 is hollow and open at the top and bottom, and a closing plate (not shown) is provided at the bottom opening, which can be opened and closed by a drive means (not shown). The cups 5 are arranged in rows of three vertically, and these rows are arranged in eight horizontal rows to form one combination weighing unit 4. Of the cups 5, the top row is a pool cup 5a, the middle row is a measuring cup 5b, and the bottom row is a memory cup 5c. Each of the cups 5a, 5b, and 5c can drop and discharge articles W into the row below by opening and closing the opening plate using the drive means.

[0021] The pool cup 5a stores a predetermined amount of items W before weighing and then discharges them. The measuring cup 5b measures the weight of the stored items W using weighing means such as a load cell. The memory cup 5c temporarily stores the items W after weighing. In combination weighing, multiple memory cups 5c are selected so that the combined weight of the items W stored in the multiple memory cups 5c falls within a desired target weight range. The selection of a combination of multiple memory cups 5c that falls within this target weight range, the driving of the opening and closing plate described above, and the driving control of each of the other parts are all performed by a control means (not shown).

[0022] As shown in Fig. 1, a collecting and discharging section 6 is provided below the combination weighing section 4. The collecting and discharging section 6 includes a collecting conveyor 7 provided below the plurality of memory cups 5c, and a discharging chute 8 into which the articles W transported by the collecting conveyor 7 are dropped.

[0023] As shown in FIG. 1, a conveying device 3 is provided above the combination weighing device 2. The conveying device 3 is equipped with a supply conveyor 10 that supplies articles to the combination weighing device 2. The supply conveyor 10 is disposed above each pool cup 5a for every three cups 5 (5a, 5b, 5c) aligned vertically in the combination weighing device 2, and is therefore arranged at a predetermined interval in the left-right direction parallel to the plane of FIG. 1. The direction in which the supply conveyor 10 conveys the articles W is perpendicular to the plane of FIG. 1.

[0024] 2 and 3 are schematic side views showing the structure and continuous operation of the conveying device 3. Below, the structure of the conveying device 3 and its positional relationship with the combination weighing device 2 will be explained with reference to these figures. The supply conveyor 10 of the transport device 3 is composed of a drive roller 11, a driven roller 12, and a belt 13 wound around the drive roller 11 and the driven roller 12, and transports the articles W along a horizontal transport direction A. The supply conveyor 10 is continuously operated at a predetermined speed under the control of a control means (not shown) while the combination weighing device 2 is in operation.

[0025] An article input section 14 is provided at the upstream end of the supply conveyor 10 in the conveying direction A. The input section 14 is open at its top, allowing an operator to visually check whether or not an article is present in the input section 14. As shown in FIG. 3(a), the downstream end of the supply conveyor 10 in the conveying direction A is located above the opening of the pool cup 5a of the combination weighing section 4, and the article W conveyed by the supply conveyor 10 drops from the downstream end of the supply conveyor 10 in the conveying direction A and enters the pool cup 5a.

[0026] A first shutter 21 is provided above the downstream end of the supply conveyor 10 to open and close the path of transport of articles by the supply conveyor 10. The first shutter 21 has an upper end pivotally supported by a horizontal swing shaft so that it can swing, and a control means (not shown) controls a drive means (not shown) to fix the shutter in a closed position of the transport path shown in each sub-diagram in Fig. 2, and the shutter can be opened and closed at will between the closed position and a position where the transport path is open as shown in Fig. 3(a).

[0027] The gap between the lower end of the first shutter 21 and the belt in the closed position is so small that the articles W cannot pass through, so when the supply conveyor 10, which has begun continuous operation after the system is started, conveys long articles W to the first shutter 21 in the closed position as shown in Figures 2(a) to (c), the articles W are prevented from moving by the first shutter 21, are gathered in contact with the upstream side surface 21a of the first shutter 21, and become tangled (curled up) into a clump. Also, when the supply conveyor 10, which is already in continuous operation, conveys clumped articles W to the first shutter 21 in the closed position as shown in Figures 3(a) to (c), the articles W are prevented from moving by the first shutter 21, and are held in contact with the upstream side surface 21a of the first shutter 21.

[0028] A second shutter 22 that opens and closes the conveyance path of the articles W by the supply conveyor 10 is provided on the supply conveyor 10 at a position upstream of the first shutter 21 and downstream of the input section 14, generally above the center of the conveyor length. The structure and opening / closing mechanism of the second shutter 22 are similar to those of the first shutter 21. That is, the second shutter 22 can be fixed at a closed position of the conveyance path shown in Figures 2(b) to (d) and Figure 3(a), and can be opened and closed as desired between the closed position and an open position of the conveyance path shown in Figures 2(a) and 3(b).

[0029] In the closed position, the gap between the lower end of the second shutter 22 and the belt is so small that an item W cannot pass through. Therefore, when a long item W is fed into the feeding section 14 of the supply conveyor 10, which has begun continuous operation after the system is started, the long item W is prevented from moving by the second shutter 22 in the closed position, as shown in Figures 2(c) and (d), and is gathered in contact with the upstream side 22a of the second shutter 22, and becomes tangled and forms a clump, as shown in Figure 3(a).

[0030] A sensor 23 that detects the presence of the article W is provided adjacent to the upstream side of the first shutter 21 in a position that does not interfere with the article W. The sensor 23 can detect that the article W has reached the upstream side of the first shutter 21, and can also detect that the article W has formed a predetermined mass on the upstream side of the first shutter 21.

[0031] Although not shown, the weighing system 1 is equipped with a control means for controlling the combination weighing device 2 and the conveying device 3. The control means controls the supply conveyor 10 and the drive means for the first shutter 21 and the second shutter 22 in accordance with a pre-loaded program and based on arbitrarily determined setting values ​​for operation and signals from sensors, etc., thereby efficiently supplying lump-shaped articles to the combination weighing device 2 and controlling the combination weighing device 2 to perform combination weighing of the articles.

[0032] Hereinafter, the control of the transport device 3 by the control means will be described with reference to FIGS. As shown in FIG. 2(a), when the weighing system 1 is started, the supply conveyor 10 of the conveying device 3 begins continuous operation at a predetermined speed. When the system is started, there are no articles W in the input section 14 of the supply conveyor 10. After visually confirming that there are no articles W in the input section 14, an operator manually inputs an appropriate amount of articles W in the form of long objects. The amount of articles W to be input is approximately 1 / 3 to 1 / 4 of the target value for combination weighing in the combination weighing device 2, and is input by the operator's visual estimation. When articles W are input into the input section 14, a sensor (not shown) detects the articles W, and the control means opens the second shutter 22 based on this detection signal. The second shutter 22 is opened in response to the input of articles W only when the system is started. The second shutter 22 may be opened automatically in response to the input of articles W when the weighing system 1 is started and the supply conveyor 10 of the conveying device 3 begins continuous operation at a predetermined speed.

[0033] 2(b), when a long article W reaches the first shutter 21, the sensor 23 detects the article W, and based on the detection signal of the article W, the control means operates the drive means to close the second shutter 22. At this point, the insertion section 14 is in a state where no article W is present. Note that, without using the sensor 23, the second shutter 22 may be closed after a predetermined time has elapsed since an insertion sensor (not shown) detects the insertion of the article W.

[0034] 2(c), the preceding articles W are transported by the supply conveyor 10, but are prevented from moving by the closed first shutter 21, so they gather together in contact with the upstream side surface 21a of the first shutter 21, become tangled together, and gradually expand into a larger mass. The input section 14 is once again in a state where there are no articles W present, so the worker takes this as a signal to input the long article W into the input section 14.

[0035] As shown in Figure 2(d), at the first shutter 21, the item W that was inserted first is in the form of a complete block that does not drag any long objects, but the item W that was inserted later in front of the second shutter 22 is in the form of a relatively small block with a long object extending backward, and is not in the form of a complete block.

[0036] 3(a), the closed first shutter 21 and second shutter 22 are holding and preventing the transport of the complete block of articles W, i.e., a standby state is realized, which is the stage before the two blocks of articles W are transported and supplied downstream. The operating time required for the supply conveyor 10 to reach the initial standby state can be determined in advance, taking into account various conditions.

[0037] As shown in Figure 3(a), after the initial standby state is realized, the first shutter 21 is opened for a predetermined time, thereby depositing the clumped articles W present upstream of the first shutter 21 into the pool cup 5a of the combination weighing unit 4. The opening and closing of the first shutter 21 is performed in conjunction with a control signal from the combination weighing device 2 that operates the opening and closing plate of the pool cup 5a, and the time for which the first shutter 21 is open is set to be slightly shorter than half the weighing cycle of the combination weighing device 2. For example, if the weighing cycle is 1.2 seconds, setting the first shutter 21 to 0.5 seconds, which is slightly shorter than half of that cycle, will ensure that the articles W are held upstream of the first shutter 21 for a sufficient period of time, making it easier for the articles W to form clumps.

[0038] 3(b), after the first shutter 21 is closed, the second shutter 22 is opened for a predetermined time, and the lump article W is conveyed downstream through the second shutter 22. If the opening time of the first shutter 21 is set to 0.5 seconds, it is preferable that the opening time of the second shutter 22 is also set to 0.5 seconds. In addition, taking into consideration the time required for transporting the article W from the second shutter 22 to the first shutter 21, the second shutter 22 may start opening before the first shutter 21 is completely closed.

[0039] As shown in Figure 3(c), the first shutter 21 is controlled not to open until a control time has elapsed that exceeds the time required for the lump-shaped article W to reach the first shutter 21. Therefore, the lump-shaped article W waits for a short time at the first shutter 21. During this control time, the loading section 14 is in a state where no article W is present, so an operator takes this as a signal to load the long article W into the loading section 14.

[0040] 2(d), at the first shutter 21, the article W inserted first is in the form of a complete lump without dragging any long object, but at the second shutter 22, the article W inserted later is in the form of a relatively small lump with a long object extending rearward, and then enters the first standby state followed by a second standby state. Thereafter, the same procedure is repeated, and two lump-shaped articles W are produced on the belt as needed, and these can be sequentially supplied to the pool cup 5a of the combination weighing unit 4.

[0041] The shapes of the first shutter 21 and the second shutter 22 are not limited to these, and as long as they can turn long objects into a block, they do not need to have a contact surface that completely covers the conveying path. The operation is also similar, and for example, the shutters may be ones that open and close by moving up and down.

[0042] According to the conveying device 3 of the embodiment described above, the long articles W to be supplied to the combination weighing device 2 can be made into a single lump that does not drag the long articles, and two lumps of articles W can be prepared and supplied at any time with an appropriate gap between them on the supply conveyor 10 by simply adding an article W to the input section 14 whenever it becomes empty. Therefore, when supplying the long articles W to the combination weighing device 2, problems such as the long article portion getting caught on peripheral devices are unlikely to occur, and the articles W can be weighed smoothly, and higher productivity than before can be achieved even by unskilled workers or with a small number of workers. [Explanation of symbols]

[0043] 1. Weighing system 2...Combined weighing device 3...Transportation device 10...Feed conveyor 14…Insertion section 21...1st shutter 22...Second shutter 23...Sensor A...Transport direction

Claims

1. A conveying device (3) for supplying a long object (W) to a downstream device (2), a continuously operated supply conveyor (10) having an input section (14) for the articles on the upstream side in the conveying direction (A) and a downstream side in the conveying direction disposed above the subsequent device; a first shutter (21) provided downstream of the supply conveyor for opening and closing a path for conveying articles by the supply conveyor; a second shutter (22) provided downstream of the input portion of the supply conveyor and upstream of the first shutter, for opening and closing the path of transport of the articles by the supply conveyor; a control means for controlling the first shutter so that the articles fed from the feed section onto the supply conveyor are prevented from being conveyed by the first shutter and become lumped, supplying the lumped articles prevented from being conveyed by the first shutter to the subsequent device by opening the first shutter for a predetermined time, and after the supply, opening the second shutter for a predetermined time, and controlling so as not to open the first shutter until a control time has elapsed that exceeds the time required for the lumped articles present upstream of the second shutter to reach the first shutter; A conveying device (3) characterized by comprising:

2. The apparatus further includes a sensor (23) for detecting the article present upstream of the first shutter, 2. The conveying apparatus according to claim 1, wherein the control means opens the first shutter after the sensor detects an article and the control time has elapsed.

3. A method for supplying articles using the conveying device (3) according to claim 1, comprising: The conveying device is placed in a standby state in which the first shutter (21) and the second shutter (22) are closed and both of them hold the lump-shaped article (W) while preventing it from being conveyed; By opening the first shutter for a predetermined time, the lump-shaped articles present on the upstream side of the first shutter are supplied to the subsequent device (2); After the supply, the second shutter is opened for the predetermined time to transport the lump of material downstream, and the first shutter is controlled not to be opened until the control time has elapsed; A method for supplying goods, characterized in that goods are input into the input section (14) where no goods are present, and the second shutter prevents the goods from being transported, causing the goods to form clumps, thereby causing the conveying device to return to the standby state.

4. A continuously operated supply conveyor (10) having an input section (14) for the long-shaped article (W) on the upstream side in the conveying direction (A) and an upper side of the downstream side in the conveying direction in order to supply the long-shaped article (W) to a subsequent device (2), a first shutter (21) provided downstream of the supply conveyor for opening and closing a path for conveying articles by the supply conveyor; a control means for controlling the first shutter so that the articles fed from the feeding section onto the supply conveyor are prevented from being conveyed by the first shutter, thereby forming a lump; a conveying device (3) comprising: a weighing device (2) as the downstream device to which the article (W) is supplied by the conveying device; A weighing system (1) comprising: The weighing system (1) is characterized in that the control means controls the first shutter (21) in response to a request signal sent from the weighing device.

5. The first shutter (21) is pivotally supported by a swing shaft, 5. The weighing system (1) according to claim 4, characterized in that the control means opens and closes the first shutter in response to the request signal.

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