JPH0142011Y2 - - Google Patents

Description

[Detailed description of the invention] This invention manually supplies the weighing items to the weighing hopper of each weighing machine of the combination weighing machine, performs a combination calculation based on each weighing value, and then combines and selects the goods into an endless strip. The present invention relates to a combination weighing device that loads and carries out loading and unloading on one section.

Previously, this type of application was filed before the present application (Jitsugan Showa).
55-70461, Utility Model Application Publication No. 56-170728), various weighing signals from measuring instruments that weigh objects to be weighed are combined in various ways to obtain a predetermined weight or a combination of weights close to this. A control unit for selecting the measuring instrument and the plurality of measuring instruments mentioned above are arranged in a line, and selection result indicator lights are provided on the sides of each of these measuring instruments so as to correspond to the plurality of measuring instruments. A parallel unloading device is installed.
The objects to be weighed have been manually transported to a transport device by a worker. In addition, since the unloading device does not have a partition plate or the like, it is necessary for the operator to visually check the conveyance status, which is complicated.

The present invention was devised to solve these problems.

Therefore, in order to avoid deforming or damaging soft and easily damaged items, or to ensure that sticky items are fed to the weighing hopper, this invention was developed to manually transfer the items to the weighing hopper of each weighing machine. After combining and weighing these items, the items are discharged from the selected weighing hopper, and the discharged items are once loaded and conveyed on the first conveyor, and on the way they are transferred to the endless belt of the second conveyor. This is a combination weighing device that performs reloading and unloading on one partitioned section, and an embodiment of this invention will be described below with reference to the drawings.

Figures 1 to 3 show schematic diagrams of a combination weighing device. In the figure, 1 is a combination weighing machine installed on the top of a frame 2, and 10 weighing machines 3 are arranged in rows of 5 and facing each other. ..., which weighs in a distributed manner the items 4 that have been input into the weighing hopper 3a... of each weighing machine 3... in a distributed manner, and weighs each weighing machine 3... by an arithmetic control section (not shown). A weighing machine 3 that performs combination addition of the value or measurement value converted into the number of items, selects a combination that matches the set weight or set number of items, and uses the weighing machine 3 corresponding to that combination.
The weighing hopper 3a of... is opened and a set weight or set number of items 4 are discharged. 5 is a link mechanism that opens and closes the weighing hopper 3a, and 6 is a link mechanism 5.
It is an opening/closing claw that drives the. Reference numerals 7 and 7 designate shelves for storing the items 4, which are fixed to side plates 8, 8 on both sides facing each other so as to be located above the input ports of the respective weighing hoppers 3a.

Reference numerals 9 and 9 are input detection devices that detect the moment when the items 4 stored in the storage shelves 7 and 7 are manually loaded into each weighing hopper 3a, and are attached to the side plates 8 and 8 on both sides. It consists of a light projector 10, 10 and its light receiver 11, 11, and the item 4 to be thrown is
When the light is blocked by the light, the input detection signal is sent to the arithmetic control unit as the discharge prohibition signal.

The arithmetic control section performs the arithmetic operation described above in units of milliseconds, and after the calculation, when a discharge start signal to be described later is input, it sends a discharge signal to the weighing hopper 3a of the selected weighing machine 3. , before the start of calculation, while items are being thrown into the weighing hoppers 3a, the calculation operation is not performed even if a calculation start signal, which will be described later, is received, even if the above-mentioned feeding detection signal is received. Also, after the calculation starts, the weighing hopper 3a that has selected the discharge signal...
If the loading detection signal is received before the weighing hopper is sent to the weighing hopper 3a, the calculation operation is invalidated and the discharging signal is not sent to the selected weighing hopper 3a. Then, when a calculation start signal, which will be described later, is input, the calculation is performed again.

Incidentally, during the calculation, a lamp or a chime (not shown) is used to inform the person putting in the item that the calculation is in progress and to stop putting in the item. 12,
12... is the weighing hopper 3a selected by the combination calculation
This is a lamp to display...

Reference numerals 13 and 14 denote a first conveyor and a second conveyor, each of which carries the goods 4 discharged from the selected weighing hopper 3a as a result of the above-mentioned calculation.
are divided into sections for each weighing operation and discharged to the outside.

The first conveyor 13 has each weighing hopper 3a...
It consists of an endless belt 15 stretched along the aligned weighing machines at a lower position of conveyor 14 to the input end 18 of the conveyor 14.

The second conveyor 14 has an inlet end 18 and an outlet end 1
It is continuously driven by the geared motor 17, and the carry-in end 18 is arranged below the carry-out end 21 of the first conveyor 13 so as to overlap with it. be done.

A large number of partition plates 22 are provided at predetermined pitches on the endless belt 20 of the second conveyor 14, and
The speed ratio of the reduction gear 16 is set appropriately, and the first conveyor 1 is moved during one pitch movement of the partition plate 22.
3 runs for half a cycle. In other words, the items 4 discharged during each weighing operation are once loaded onto the first conveyor 13 and conveyed, and then transferred to the partition plate 2.
It is transferred onto one section 23 of the endless belt 20 divided by 2 and discharged to the outside.

A packaging device (not shown) is provided at the discharge end 19 of the second conveyor 14, or if no packaging device is provided, a worker who performs the packaging can stand and
The articles 4 loaded on the compartments 23 are packaged.

The drive shaft 24 on the carry-in end 18 side of the second conveyor 14 is connected to the drive shaft of the deceleration device 16, and a discharge start signal is sent to the drive shaft 24 to the arithmetic control unit. A cam (not shown) and a cam (not shown) for starting a calculation which sends a calculation start signal to the calculation control section, for example, operating a micro switch, are provided. The partition plate 22 on the carry-in end 18 side is the first
When the conveyor 13 approaches the discharge end 21 of the first conveyor 13, a calculation start signal is sent to the calculation control section from the micro switch activated by the calculation start cam, and the partition plate 22 is moved to the first When it reaches just before the discharge end 21 of the conveyor 13, a discharge start signal is sent to the arithmetic control unit from the micro switch operated by the discharge cam. The arithmetic control section causes each weighing hopper 3a to perform a discharging operation only after the combination computation is completed and the discharging start signal described above is received. That is, the discharge operation of each weighing hopper 3a is controlled by the first conveyor 1 according to the discharge signal.
The articles 4 are loaded onto the sections 23 in synchronization with the movements of the conveyor 3 and the second conveyor 14.

Next, the operation of this combination weighing device will be explained. First, the items 4 on the storage shelf 7 are manually loaded into each weighing hopper 3a in small amounts with variations, and each weighing value or each weighing value is converted into the number of pieces by the arithmetic control section. When each piece value is memorized and the calculation start signal is input, the set weight value or the set weight value or the combination of piece values that is equal to or closest to the set weight value is selected, and the corresponding weighing hopper is selected. 3a... is made to wait for discharge. During this time, the partition plate 22 of the second conveyor 14
reaches just before the discharge end of the first conveyor 13,
One section 23 of the endless belt 20 on which the article 4 is loaded subsequently reaches just before the discharge end 21, and the arithmetic control section receives a discharge start signal from the discharge start microswitch that has detected the position at this time. In response, a discharge signal is sent to the weighing hopper 3a, which is waiting for the above-mentioned discharge, to discharge the article 4. Discharged items 4
are once randomly loaded onto the endless belt 15 of the first conveyor 13, conveyed to the discharge end 21, transferred onto one division 23 of the endless belt 20 of the second conveyor 14, and carried out to the outside. Ru.

Thereafter, the articles 4 are placed in the empty weighing hopper 3a and weighed repeatedly in the same manner, but the calculation has already been started by the calculation control section, and by the time the discharge signal is sent out based on the calculation result, Furthermore, when the item 4 is thrown into the weighing hopper 3a..., it is detected by the feeding detection device 9, and as a result, the above-mentioned discharge signal is not sent to the selected weighing hopper 3a..., but at the same time it is detected by a lamp or a buzzer ( (not shown) to notify the person making the input and to stop the input. Then, it waits for the input of the next calculation start signal, performs a new calculation, and sends out a new ejection signal, but at this time, the previous ejection timing has already passed, so the item is placed on the next section 23, which is one pitch away. is loaded and unloaded.

As explained above, in the combination weighing device of this invention, items are manually loaded into the weighing hopper of each weighing machine, and after the items are combined and weighed, they are discharged from the selected weighing hopper. Therefore, if the item is soft and easily damaged, it is possible to avoid deformation or damage to each other before being put into each weighing hopper, and it is possible to avoid reducing the commercial value of the item. Alternatively, in the case of sticky items, it is possible to avoid the problem of residual adhesion until the items are placed in each weighing hopper.

In addition, since the items discharged from the weighing hopper for each weighing operation are divided and loaded into sections on the endless belt partitioned by the partition plate of the second conveyor, the items discharged from the weighing hopper for each weighing operation are loaded. Items do not get mixed up before being packaged.

Furthermore, the loading detection device detects the articles to be loaded into each weighing hopper, and when this detection signal is sent out after the start of the combination calculation, discharging the articles from the weighing hopper selected in combination is prohibited, and after recalculation,
Even at the next discharge timing, the item is discharged from the weighing hopper selected by recalculation, so that the highly accurate weighing that is a feature of combination weighing can be maintained.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the combination weighing device according to this invention, with Figure 1 showing its front view, and Figure 2 showing a cross-sectional view taken along line A-A in Figure 1. , FIG. 3 shows a top view. DESCRIPTION OF SYMBOLS 1... Combination weighing machine, 3... Weighing machine, 4... Article, 9... Insertion detection device, 13... First conveyor, 14... Second conveyor, 15, 20...
... Endless band, 22 ... Partition plate, 23 ... 1 division.

Claims (1)

[Scope of utility model registration request] The combination weighing machine is composed of n weighing machines arranged in a line, and means for detecting an article to be put into the weighing hopper of each of the weighing machines by installing an article loading detection device and stopping the calculation; A first conveyor formed of an endless belt is disposed at a lower position, and a second conveyor formed of an endless belt with a plurality of partition plates attached at predetermined pitches is disposed further below, and a combination calculation is performed. The items to be weighed from the selected weighing machine are discharged onto a first conveyor synchronized with the second conveyor, and the items discharged onto the first conveyor are separated by a partition plate of the second conveyor for each weighing operation. A combination weighing device characterized by comprising means for carrying out reloading and unloading into one partitioned section.