JPH11190656A - Measurering device and combined balance with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combined balance which is easy to additionally have a first measuring unit for measuring the weight of a cup and which is compact and inexpensive by providing a constitution enabling articles to be measured to be transfered mutually between a receiving means and a placement base through an elevation means to elevate the base. SOLUTION: An unoccupaied cup 20 is received by a transfer conveyer 66, then an elavator 1 is driven to raise a placement base 2 to a raised position to thereby transferring cups 20 received by a transfer conveyer 66 by e.g. 4 pieces onto the base 2. The total weight of 4 pieces of unoccupied CUP 20 are measured by a first measurement unit 1, then the measured cup 20 is delivered out by a pusher 70 for an unoccupied cup, and during the movement onto a throwin stage 61 an article or substance to be measured is thrown in the cup 20. The cup 20 charged with the measurement article is measured by a second measurement unit, and the measured cup 20 is delivered out to a residence conveyer. As a measurement value, the weight of substance charged in each cup 20 is calculated after an average value is computed by an average value computation means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weighing device for automatically weighing articles to be weighed while being conveyed.

[0002]

2. Description of the Prior Art As shown in a partial cross-sectional front view of FIG. 8, this weighing device receives four empty cups 20 (four) by a transfer conveyor 66 ', and receives four empty cups 20 by the transfer conveyor 66'. First cup 20 in the raised position
The empty cup pusher 70 feeds it onto the elevating table 48. Then, when the first drive cylinder 51 is shortened, the first elevator 48 moves to the lowering position, and the first elevator 48 moves to the first position.
The four empty cups 20 on the elevator 48 of the four
Measuring instrument 49 (49-1, 49-2, 49-3, 49-
4) Can be replaced on top. Each first measuring device 49
Weighs the weight of each corresponding empty cup 20, and when the weighing is completed, the empty cup pusher 70 is moved to the transfer conveyor 6.
The next four empty cups 20 on 6 'are fed out onto the first lift 48 in the raised position. As a result, the four weighed cups 20 this time are sent out onto the loading stage 61, and move forward in the advancing direction 97 with the front and rear cups 20 in the state of pressing and pressing on the loading stage 61. While moving forward on the stage 61, the worker puts the articles to be weighed into the cups 20. Then, the cup 20 into which the articles to be weighed has been fed is sent out onto the lift table 50 at the raised position, and the lift table 50 is driven downward by the drive cylinder 60 of the second lift device 58. The four cups 20 accommodating the items to be weighed are four second weighing devices 62 (62-1, 62-
2, 62-3, 62-4)
The weights of the four cups 20 containing the articles to be weighed are weighed by the respective second measuring devices 62, and thereafter, the cups 20 containing the weighed articles to be weighed are sent out onto the staying conveyor 63. Each of the measured values W _G1 , W _G2 , W _G3 , and W _G4 obtained by weighing with the four second weighing devices 62, respectively.
(Total weight of the cup 20 and the article 21)
Weighing values W _H1 , W _H obtained by weighing
_H2, W _H3, W _H4 subtractor (weight values of cups 20) by weight of each of the objects to be weighed articles put into the cup 20 by (not shown) subtracts _{W B1, W B2, W B3} , W _B4 can be calculated. As described above, since the weight of the empty cup 20 is measured in advance by the first measuring device 49, even if a part of the article to be weighed last time adhered to the cup 20 remains, The weight of the article to be weighed which has been put into the cup 20 this time can be accurately measured. Thereafter, the weighed article can be removed from the cup 20 and packaged.

[0003]

By the way, depending on the properties of the article to be weighed, the amount of the article to be weighed adhered to the cup 20 is substantially constant, so that the first weighing device 49 is not required. Therefore, some weighing devices include the first weighing device 49 and some do not. Then, in this type of weighing device, from the viewpoint of reducing the price and shortening the manufacturing period, the first and second weighing devices for weighing the weight of the cup 20 may or may not be provided with the first weighing device 49. It is necessary that the structure other than the components such as the weighing device 49 and the first drive cylinder 51 be the same.

Therefore, in the conventional weighing device shown in FIG.
When the first measuring device 49 is unnecessary, the first measuring device 49 is used.
And the first lift platform 4 omitting the first drive cylinder 51.
8 may be fixedly provided at the raised position and otherwise be the same as that shown in FIG. However, when the first weighing device 49 is not required, the fixedly provided first lifting platform 48 itself is originally unnecessary, but the first lifting platform 48 is provided. There is a problem that the volume of the weighing device is increased by the space of the first elevating table 48 and the installation space of the weighing device is widened.

In the conventional weighing device shown in FIG.
Since four first measuring instruments 49 are provided for measuring the weight of each of the four cups 20 arranged in one horizontal line perpendicular to the traveling direction 97, the cost of the first measuring instrument 49 is provided. However, there is a problem that the bulk increases.

An object of the present invention is to provide a weighing device and a combination weigher which are compact and inexpensive, and in which a first weighing device for weighing a cup can be easily added.

[0007]

A weighing device according to a first aspect of the present invention has a receiving means for receiving an article to be weighed, and a weighing table, and weighs the article to be weighed placed on the weighing table. The first load detecting means, the article to be weighed on the receiving means is mounted on the table by raising the table to the raised position, and the table is lowered to the lowered position by lowering the table to the lowered position. It is characterized by comprising lifting / lowering means for changing the article to be weighed on the receiving means, and sending means for sending the article to be weighed on the receiving means to a subsequent stage.

A weighing device according to a second aspect of the present invention has a receiving means for receiving an article holding means, and a first load detecting means for measuring a weight of the article holding means mounted on the mounting table. The article holding means on the receiving means is placed on the above table by raising the table to the raised position, and the article holding means on the table is lowered by lowering the table to the lowered position. Lifting means for reloading on the receiving means, and sending means for sending out the article holding means received by the receiving means onto the following charging stage,
The article holding means on the receiving means, which is provided at the subsequent stage of the receiving means and is sequentially sent out by the sending means, is received, and each of the received article holding means is conveyed in contact with each other in the front-rear direction. An input stage for inputting an article into each of the article holding means on the way, and an article provided at a subsequent stage of the input stage and receiving the article holding means into which articles sequentially sent out by the sending means are inserted and receiving the article. It is characterized by comprising a holding means and a second load detecting means for measuring the total weight of the articles put into the article holding means.

[0009] In a weighing device according to a third aspect of the present invention, in the first or second aspect, the first load detecting means includes a plurality of articles to be weighed or article holding means (hereinafter, referred to as "weighing means"). , Etc.) are weighed and their total weight is measured, and this total weight is divided by the number of weighed articles, etc. placed on the above-mentioned table, and the average value of the weighed articles, etc. Is provided.

According to a fourth aspect of the present invention, in the weighing device according to the first, second, or third aspect, the lifting means is configured to raise and lower both the table and the first load detecting means. It is a feature.

According to a fifth aspect of the present invention, there is provided a combination weigher including a receiving means for receiving the article holding means, and a first load detecting means for weighing the article holding means placed on the mounting table. The article holding means on the receiving means is placed on the above table by raising the table to the raised position, and the article holding means on the table is lowered by lowering the table to the lowered position. Lifting means for reloading on the receiving means, and sending means for sending out the article holding means received by the receiving means onto the following charging stage,
The article holding means on the receiving means, which is provided at the subsequent stage of the receiving means and is sequentially sent out by the sending means, is received, and each of the received article holding means is conveyed in contact with each other in the front-rear direction. An input stage for inputting an article into each of the article holding means on the way, and an article provided at a subsequent stage of the input stage and receiving the article holding means into which articles sequentially sent out by the sending means are inserted and receiving the article. Holding means, second load detecting means for measuring the total weight of the articles put into the article holding means, and a plurality of the article holding means into which the articles weighed by the second load detecting means are put. Various combinations of the weight values of the stagnation means for storing and the articles put in the article holding means stagnating on the stagnation means are provided. A combination calculating means for selecting an article constituting a set having a total weight value within a predetermined weight range among the combinations, and a combination weigher, wherein the delivery means includes a predetermined number or more of articles on the staying means. When the holding means stays, the feeding of the article holding means is paused, and during this pause period, the lifting / lowering means raises / lowers the article holding means on the receiving means to reduce the weight of the article holding means by a first load. The detection means measures the weight.

According to the weighing device of the first invention, the receiving means receives the article to be weighed in a state where the lifting means lowers the mounting table of the first load detecting means to the lowered position, and the lifting means moves the mounting table. Is lifted to the ascending position, the article to be weighed on the receiving means can be replaced on the table, and the first load detecting means weighs the article to be weighed on the table. I do. Next, when the lifting / lowering means lowers the platform to the lowered position and replaces the weighed articles on the platform with the receiving means, the delivery means sends out the weighed articles to the subsequent stage. be able to.
In addition, the lifting means can lift and lower the articles to be weighed received by the receiving means by a predetermined number and place them on the mounting table to measure the weight of the articles to be weighed. The weight of the articles to be weighed can be weighed by replacing all the articles to be weighed on the mounting table.

According to the weighing device of the second invention, the first
The weight of the empty article holding means can be weighed by the first load detecting means and the weighed article holding means can be sent out onto the loading stage. In the loading stage, the article holding means repeatedly move and stop in a state of being in contact with each other in the front-rear direction, and are sent forward, and articles are loaded into each article holding means on this loading stage. Then, the article holding means into which the articles are put is sequentially sent forward by the sending means and received by the second load detecting means, and the article holding means and the articles put into it are received by the second load detecting means. Is weighed. By subtracting the weight of the article holding means measured by the first load detecting means or the average weight thereof from the total weight, the weight of the article or a weight close thereto can be obtained.

According to the weighing device of the third invention, the first load detecting means weighs the total weight of a plurality of articles to be weighed or article holding means (hereinafter, referred to as "articles to be weighed"). The average value calculating means calculates the average value of the articles to be weighed.

According to the weighing device of the fourth aspect, the lifting means can raise and lower both the mounting table and the first load detecting means.

According to a fifth aspect of the present invention, there is provided a combination weigher to which the weighing device according to the second aspect of the present invention is applied, wherein the table is raised to a raised position and the article holding means is replaced on the table. Sometimes, the weight of the empty article holding means is weighed by the first load detecting means, and the weight of the article holding means into which the articles are loaded is weighed by the second load detecting means. However, the receiving means, the elevating means, the sending means, and the charging stage operate in the same manner as in the second invention, and therefore their description is omitted. Then, the plurality of article holding means into which the articles weighed by the second load detecting means are put can be stored in the staying means, and the combination calculating means is put into the article holding means staying on the staying means. The various weight values of the articles are combined in various ways, and the articles constituting the set whose total weight value is within a predetermined weight range are selected from the combinations. This completes the combination weighing. The articles selected for this combination are discharged from each article holding means.

The combination weigher according to the fifth aspect is characterized in that when a predetermined number or more of the article holding means stay on the staying means, the delivery of the article holding means by the delivery means is paused, During this pause period, the lifting means raises and lowers the article holding means on the receiving means, and the first load detecting means weighs the weight of the empty article holding means. The weight of the empty article holding means weighed by the first load detecting means is the total weight of the article holding means weighed by the second load detecting means and the articles put into it. , The weight of the article can be calculated.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a weighing device according to the present invention will be described with reference to the drawings. FIG. 4 is a plan view of the weighing device, and FIG. 5 is a front view of the weighing device. In this weighing device, as shown in the plan view of FIG. 4, an empty cup (article holding means) 20 is received by a transfer conveyor (receiving means) 66, and then the first elevating device (elevating means) 1 is moved. When the table 2 is driven, the table 2 is raised to the raised position, and the cups 20 received by the transfer conveyor 66 are mounted on the table 2 four by four. Then, the total weight W _HG of the four empty cups 20 on the mounting table 2 is measured by the first measuring device 3, and the measured cup 20 is pushed by the empty cup pusher (delivery means) 70. The articles 21 to be weighed are put into each cup 20 by an operator or a putting device while moving in the traveling direction 97 on the feeding stage 61 which is sent out and formed in the shape of a saw. Then, the weight of each of the cups 20 into which the article to be weighed 21 has been placed is 4
Each of the second measuring devices 62 (62-1, 62-2, 62-
3, 62-4), and after that, the cup 20 accommodating the weighed article 21 can be sent out to the staying conveyor (staying means) 63. Then, an average value calculating means (not shown) calculates an average value W _H of the measured values W _HG (total weight value of the four cups 20) obtained by measuring with the first measuring device 49, The respective measured values W _G1 , W _G2 , W _G3 , W _G4 (measured by the cup 20 and the article 2
The average value W _H from the total weight value of 1) the subtractor (weight of the objects to be weighed articles 21 which are put into each cup 20 by not shown) is subtracted _{(W G1 -W H =) W} B1, ( W _G2 -W
_{H =) W B2, (W} G3 -W H =) W B3, (W G4 -W H =)
W _B4 can be calculated. As described above, since the total weight of the four empty cups 20 is measured in advance by the first measuring device 49 and the average value thereof is calculated, the weight of the article 21 previously measured on the cup 20 is calculated. Even when the portion remains attached, the weight of the article 21 to be weighed that has been put into the cup 20 this time can be measured almost accurately. Thereafter, the weighed article 21 can be taken out of the cup 20 and packaged.

In the first elevating device 1, the number of times that the empty cup pusher 70 sends out four cups 20 on the transfer conveyor 66 onto the input stage 61 at a predetermined number of times (for example, 10 times). Transfer conveyor 6
The four cups 20 on 6 are replaced on the mounting table 2, and the total weight W _HG of these four cups 20 is measured by the first measuring device 3. However, after the four empty cups 20 already measured and the four empty cups 20 not to be measured on the transfer conveyor 66 are sequentially sent out four by four onto the input stage 61 by the empty cup pusher 70, the input stage The articles 21 to be weighed are put into the respective cups 20 on 61, and the cups 20 into which the articles 21 to be weighed are pushed forward on the input stage 61 in the state of pressing and pressing, and each of these cups 20 is divided into four cups. The cup 20 into which the weighed articles 21 which have been weighed by the second weighing machine 62 and which have been weighed are fed out onto the staying conveyor 63,
The second elevating device 58 is the same as the conventional one shown in FIG.

As shown in FIGS. 4 and 5, the transfer conveyor 66 is a linear conveyor having a terminal portion 69 arranged on one side of one first weighing device 3, and is an object to be weighed (hereinafter, referred to as a "conveyor").
Sometimes simply referred to as "articles". ) Receives the empty cup 20 discharged and transfers it to the terminal end portion 69. The end portion 69 is provided with a stopper 41, and the stopper 41 can lock the cup 20. As shown in the partial cross-sectional side view of FIG. 1, the transfer conveyor 66 includes an annular plastic chain (top chain) 42, and the plastic chain 42 is hung on the sprocket 4. The sprocket 4 is provided on a rotation shaft of a motor 43, and the rotation of the motor 43 causes the plastic chain 42 to rotate.
Travels in a predetermined direction. This plastic chain 42
Are supported by two guide rails 6, 6 and run along the guide rails 6, 6, and the guide rails 6, 6 are fixedly supported by rail support arms 7, 7. The rail support arm 7 is supported by a main body frame 9 via a conveyor frame 8. Then, when the cup 20 is conveyed to the end portion 69 of the transfer conveyor 66, the leading cup 20 is locked by the stopper 41, and the four cups 20 stop on the end portion 69.

The transfer conveyor 66 is always driven to rotate by the motor 43, and each cup 20 on the transfer conveyor 66 is conveyed to the stopper 41 side and the leading cup 2 is moved.
When 0 touches the stopper 41, the subsequent cups 20 are arranged in a line in a state of pressing and pressing in contact with each other, and each cup 20 stops at that position. However, since the transfer conveyor 66 is constantly driven to be conveyed, the cups 20 arranged in a row on the transfer conveyor 66 tend to protrude leftward or rightward in the traveling direction.
And as shown in FIG. 4, the end portion 69 of the transfer conveyor 66.
Is provided with an empty cup pusher 70, and a pad 71 provided at the end of the piston rod of the empty cup pusher 70 allows the cup 20 on the transfer conveyor 66 to be moved.
Is restricted so as not to protrude to the pusher 70 side.
As shown in FIG. 1, a shutter 46 is provided on the input stage 61 side of the terminal end portion 69 of the transfer conveyor 66, and the shutter 46 prevents the cup 20 from protruding to the input stage 61 side of the transfer conveyor 66. Can be regulated. The shutter 46 is driven up and down by the shutter cylinder 5 to move the rail support arm 7.
The cup 20 is moved up and down along the shutter mounting plate 10 fixed to the opening stage 61, and is regulated so that the cup 20 does not protrude toward the loading stage 61 in the state of the rising position shown by the solid line. Pusher 70 for cup 2
0 can be pushed onto the input stage 61.
The shutter 46 is connected to the four cups 2 on the end portion 69.
0 is provided on the side.

At the end portion 69 of the transfer conveyor 66,
As shown in FIG. 4, when four empty cups 20 accumulate and a predetermined supply signal is output from a central processing unit (CPU) (not shown) provided in the weighing device, The stopper 72 constituted by an air cylinder provided at the entrance of the terminal portion 69 is extended, and the pad 45 provided at the tip of the stopper 72 can stop the subsequent cup 20 from entering the terminal portion 69.
Then, the empty cup pusher 70 extends and pushes the four cups 20 of the terminal portion 69 onto the input stage 61 provided in the front, and thereafter the empty cup pusher 70 performs the shortening operation (FIG. 4). (Shortened state shown in FIG. 4), the stopper 72 is opened (shortened state shown in FIG. 4), and plays a role of passing the four cups 20 through the end portion 69.

The mounting table 2 is provided on the load receiving portion 11 of the first measuring device 3 as shown in FIGS. 1 to 3, and as shown by a broken line in FIG. The four empty cups 20 on the transfer conveyor 66 are transferred onto the mounting table 2 in a state where the four empty cups 20 are moved up to the ascending position with the measuring device 3 of the first embodiment. It is measured by the container 3. The mounting table 2 has two mounting plates 2a, 2a which are arranged in parallel in the vertical direction at an interval.
The two mounting plates 2a, 2a are connected to two connecting rods 14, 1
4 and two collars 15 are disposed between them, and two collars 16 and a support portion 17 are disposed on the outer surface of the mounting plate 2a on the first measuring instrument 3 side. It is tightened and joined. This support 1
Reference numeral 7 is fixed to the load receiving portion 11 of the first measuring instrument 3 by bolts. The mounting table 2 is at a lowered position as shown by a solid line in FIG. 1. In this lowered position, the mounting plates 2a, 2a do not come into contact with the rail supporting arms 7, 7, so that the rail supporting arms 7, , 7 are provided with notches 18,.

As shown in FIG. 1, the first measuring device 3
A table is provided. The first weighing device 3 has a weight detector such as a load cell, and when four empty cups 20 are transferred onto the mounting table 2 connected to the load receiving portion 11 of the load cell, four The total weight of each empty cup 20 can be measured. Then, an arithmetic control unit (not shown) constituted by a central processing unit (CPU) provided in the weighing device stores the total weight value W _HG of these cups 20 in a storage unit (not shown). I do. The first
The weight detector of the weighing device 3 is housed in the box 24.

The total weight W _HG of the four cups 20 obtained by weighing with the first measuring device 3 is calculated by the average value calculating means of the arithmetic control unit provided in the weighing device. The average value W _H of the cup 20 is calculated.
Metric husband obtained by weighing people by the second weighing instrument 62 of the base W _G1, W _G2, by W _G3, W the average value W _H subtractor from _G4 (not shown) subtracts weight of the objects to be weighed articles 21 which are put into each cup 20 (W _G1 -W _H =)
_{W B1, (W G2 -W H} =) W B2, (W G3 -W H =) W B3,
(W _G4 −W _H =) W _B4 is calculated.

In the first elevating device 1, the number of times that the empty cup pusher 70 sends out four cups 20 on the transfer conveyor 66 onto the loading stage 61 at a predetermined number of times (for example, 10 times). Transfer conveyor 6
In this configuration, the total weight W _HG of the four cups 20 is weighed by the first measuring device 3 by replacing the four cups 20 on the mounting table 2 with the four cups 20.
The four cups 20 are weighed on the total weight W _HG of the four cups 20 each time it is transported to calculate the average value W _H, using the average value W _H obtained by the present calculation it may be configured to calculate the weight W _B1 to _W-B4 of the article 21 which is put into each cup 20.

The first lifting device 1 includes a spring mechanism 12 and a lifting drive cylinder 13. Spring mechanism 12
Has an upper spring 19 and a lower spring 22 which are arranged in parallel and spaced apart from each other in the horizontal direction, as shown in FIG. ,... Are provided. The right end of the upper spring 19 is connected to a support plate 29 provided on the lower surface of the box 24 accommodating the first measuring instrument 3, and is connected to the lower spring 22.
Is connected to a support plate 29 provided on the lower surface of the box 24 via a vertical member 25. The left end of the upper spring 19 is connected to the substrate 27 via a vertical member 26, and the left end of the lower spring 22 is connected to the right end of the substrate 27 via a vertical member 28. The board 27 is fixed to a mounting plate 35 provided on the main body frame 9 by bolts. In the spring mechanism 12, the interval between the two notches 23 provided in the upper spring 19 and the interval between the two notches 23 provided in the lower spring 22 are made equal to each other.
7 is a fixed side portion, and the support plate 29 is a free end side portion, thereby constituting a Roberval mechanism. The first measuring device 3 and the mounting table 2 are elastically supported by the support plate 29 on the free end side so as to be able to move up and down.

As shown in FIG. 1, the lifting drive cylinder 13 has a base end rotatably connected to a bracket 30 provided on the box 24 via a connection pin 31, and a distal end of the piston rod has a base plate. It is rotatably connected to a bracket 32 provided on 27 via a connecting pin 33. The lifting drive cylinder 13 is, as shown in FIG.
In this configuration, the platform 2 is supported in the lowered position in a shortened state, and the platform 2 is supported in a raised position in an extended state (not shown). In the state where the lifting drive cylinder 13 supports the mounting table 2 at the lowered position in the shortened state, the mounting plates 2a, 2a
Is located below the upper surface of the plastic chain 42, and the four cups 20 can be received in the end portion 69 of the transfer conveyor 66. At this time, the end portion of the empty cup pusher 70 is extended to operate. 6
The four pre-measured cups 20 or the non-measured cups 20 on 9 can be sent out onto the input stage 61. In a state in which the lifting drive cylinder 13 extends and supports the mounting table 2 in the raised position, the upper edges of the mounting plates 2a and 2a are raised to a position above the upper surface of the plastic chain 42, and By replacing the four empty cups 20 on the mounting table 2, the first weighing device 3 can measure the total weight.

A comparison between the conventional weighing apparatus shown in FIG. 8 and the conventional weighing apparatus shown in FIG. 8 comparing the weighing apparatus having the first weighing device 3 having the mounting table 2 configured as described above and the first elevating device 1 with each other is shown. The first measuring device 49 and the first elevating table 48 for measuring the empty cup 20 are transported by the transfer conveyor 6
Since it is provided between the transfer stage 66 'and the charging stage 61, a space for measuring the cup 20 is required between the transfer conveyor 66' and the charging stage 61, which increases the bulk of the measuring device and increases the volume of the measuring device. There is a problem that the installation space is widened. On the other hand, in the weighing device of the above-described embodiment, since the weight of the cup 20 is measured by moving the cup 20 on the transfer conveyor 66 up and down, the first weighing device 3 and the first lifting device 1 are connected. Because of the provision, the bulk of the weighing device does not increase, and the installation space does not increase.

According to the weighing device of the above embodiment, the main body frame 9 of the weighing device provided with the first weighing device 3 and the first lifting / lowering device 1 is the main body of the weighing device not provided with these devices. The first measuring device 3 having the mounting table 2 can have the same size as the frame 9.
When the first elevating device 1 is added to a weighing device not provided with these devices, it is not necessary to change the main body frame 9, so that it can be added simply and at low cost.

That is, for example, even if a part of the article 21 to be weighed may adhere to the cup 20 without being discharged from the cup 20, when the variation in the amount of adhesion is small, the
May not significantly affect the weighing accuracy of the articles 21 to be weighed, and in this case, the first weighing device 3 may not be required. In this case, the first weighing device 3 is provided. There is no model. If the first weighing device 3 is required due to a large variation in the weight of the articles 21 to be weighed adhered to the cup 20, a model provided with the first weighing device 3 is used.

When manufacturing these two types of weighing devices, the first weighing device 3 is not provided, and the weighing device provided with the second weighing device 62 is replaced with a standard weighing device. When the first weighing device 3 and the first lifting / lowering device 1 are required, the first weighing device 3 and the like are added to the standard weighing device, so that the two types of weighing devices can be used. The components of the device can be shared, and as a result, the cost of the measuring device can be reduced, and the cost for adding the first measuring device 3 and the like can be reduced.
In this case, as shown in FIG. 1, the standard weighing device is provided with a notch 18 in the rail support arm 7, a through hole 34 for passing the collar 16 through the conveyor frame 8, and a main body frame 9. A screw hole 36 is provided in the mounting plate 35 provided in advance. Thereby, the first measuring device 3 having the mounting table 2 and the first elevating device 1 can be easily added to the standard measuring device.

Further, since the total weight of the four empty cups 20 is measured by the first measuring device 3, the measuring time is reduced as compared with the conventional case where the cups 20 are measured one by one. Since the measurement time can be reduced without increasing the number of the first measuring devices 3, the cost of the first measuring device 3 can be reduced as compared with the related art. That is, when the weighed articles 21 put into the cup 20 are discharged from the cup 20, the weight of the weighed articles 21 which are not discharged from the cup 20 and adhere and remain are large, so that the conventional Even if the weight of the empty cup 20 is accurately weighed one by one as described above, the weight of the article 21 discharged from the cup 20 may not be accurately known. By adopting the configuration, it is economical to measure the total weight W _HG of these four cups 20 and divide this total weight value by the number of cups 20 to obtain the average weight W _H as the weight of the cup 20. Excellent.

Further, the first elevating device 1 of the above embodiment
Is configured to support and raise and lower both the mounting table 2 and the first weighing device 3, so that the mounting table 2 can be fixedly provided on the load receiving portion 11 of the first weighing device 3. Accordingly, it is not necessary to employ a complicated mechanism such as a link mechanism for coupling the mounting table 2 and the first measuring instrument 3, and a simple structure can be achieved. Since the mounting table 2 and the first measuring device 3 are supported by the spring mechanism 12, the mounting table 2 and the first measuring device 3 can be smoothly moved up and down. It is possible to prevent the occurrence of a measurement error due to the raising and lowering.

Next, a second embodiment will be described with reference to FIGS. In this embodiment, the weighing device of the first embodiment is applied to a combination weigher. This combination weigher
As shown in the plan view of FIG. 6, the weighing device of the first embodiment includes a transport conveyor 64, a discharge device 65, and a transfer conveyor 6.
6 is provided with an operation control unit for performing a combination operation.
The weighing device, the transport conveyor 64, the discharge device 65, and the transfer conveyor 66 connect the large number of cups 20 to each other as shown in FIG.
The combination weigher can be conveyed clockwise on the combination weigher as shown by arrows. According to this combination scale,
When these cups 20 pass on the loading stage 61, for example, they have adhesive properties, such as cut vegetables, pickles, and muscles.
Or weighing articles 21 having adhesiveness worker was poured by hand (filled) into each cup 20, the calculation control unit of the metering apparatus in the same manner as in the first embodiment the weight W _B of each article 21 The combination is calculated, and a combination of the articles 21 having a total weight within a predetermined weight range is selected from the weighed articles 21, and the cup 20 accommodating each of the selected articles 21 is transported to the discharge device 65. Then, the discharging device 65 conveys the cups 20 containing the articles 21 selected in the combination to a predetermined discharging position 88, and at this discharging position 88,
Is inverted and the articles 21 are discharged from each cup 20 to perform combination weighing of the articles 21 having a total weight within a predetermined weight range. Then, the empty cup 20 is sent out by the sending-out conveyor 92, passes through the cup inverting device 96, is inverted by the cup inverting device 96, and moves on the transfer conveyor 66 with the opening directed upward. I do. Next, the empty cups 20 are conveyed by the transfer conveyor 66, and thereafter move to the input stage 61, and the operator inserts a new article 21 into each empty cup 20 in the same manner as described above. The above weighing is repeated. Each cup 20 is formed to have the same weight.

Reference numeral 101 shown in FIGS. 6 and 4 is an input table. The input table 101 has twelve circular article input ports 102 of the same size, and the operator stops on the fixed base 67 by inputting the articles 21 into the respective article input ports 102. The article 21 can be put into each of the cups 20.

Reference numeral 118 shown in FIG. 6 denotes a storage container for storing the articles 21 to be weighed. The operator holds the articles 21 on the storage containers 118 by hand and places them in the cups 20 on the input stage 61. The article 21 can be put in,
The article 21 is easily put into each cup 20.

Next, the stay conveyor 63, the pusher 84, the combination calculating means, the transport conveyor 64, the discharge device 65 and the like provided in the combination weigher will be described. When the weight of the articles 21 put into each cup 20 is calculated and stored by the weighing device shown in FIG. 6, the four cups 20 into which the weighed articles have been put are placed on the stagnating conveyor 63 at the subsequent stage. When the number of 20 becomes eight or less, it is conveyed to the staying conveyor 63. This is because the staying conveyor 63
It is a length that allows the cups 20 to stay,
In order to receive the four weighed cups 20, the number of the cups 20 on the staying conveyor 63 is eight (= 12−
4) It is necessary that:

The staying conveyor 63 is the same as that of the first embodiment, and receives the cups 20 discharged from each of the four second measuring devices 62 as shown in FIG. Can be transported. A stopper 73 is provided at the left end portion, and the cup 20 can be locked by the stopper 73. Although not shown in the figure, ten shutters are provided on the left edge of the staying conveyor 63 in the transport direction, which are slightly protruded above the transport surface of the plastic chain 74. With this shutter, the cup 20 on the stagnation conveyor 63
Can be regulated so as not to protrude toward the conveyor 64 side.

The first to tenth pushers 84-1 to 84-1 are located on the right side in the conveying direction of the stagnant conveyor 63 shown in FIG.
84-10 are provided, and the cups 20 on the stagnation conveyor 63 are pushed by the pads 85-1 to 85-10 provided at the tip of the piston rod of each pusher.
It can be regulated so that it does not protrude to the side. That is,
The staying conveyor 63 is constantly driven to rotate by a motor, and each cup 20 on the staying conveyor 63 is
When the first cup 20 is conveyed to the side and the leading cup 20 comes into contact with the stopper 73, the subsequent cups 20 are sequentially arranged in a line in a pressing state in contact with each other, and each cup 20 stops at that position. However, since the stagnant conveyor 63 is constantly driven to be conveyed, the cups 20 arranged in a line on the stagnant conveyor 63 tend to protrude leftward or rightward in the traveling direction. 85-10
In addition, the ten shutters facing the respective pads can regulate the cup 20 so as not to protrude outside the staying conveyor 63. As shown in FIG. 6, a guide 112 is also provided behind the tenth pusher 84-10 to prevent the cup 20 from protruding.

Each of the first to tenth pushers 84-1 to 8-8
Reference numeral 4-10 denotes a unit for taking out a desired cup 20 on the stagnant conveyor 63 to the transport conveyor 64 side. These first to tenth pushers 84-1 to 84-10
As shown in FIG. 6, each of the pushers comprises an air cylinder, and each pusher is arranged at an interval of the same length as the diameter of the cup 20. That is, as shown in FIG. 6, in a state where 12 cups 20 are arranged in a line on the stagnant conveyor 63, the first to tenth pushers 84- correspond to the first to ten cups 20, respectively. 1-84-10
Is provided. The pads 85-1 to 85-10 provided on the pushers 84-1 to 84-10 have a planar shape of L
It is shaped like a letter. As shown in FIG. 7, the second, fifth, eighth, and tenth pushers 84-2, 84-5, 84-8, and 84-10 make the pad 85 L-shaped. In the state where the extension operation is performed, each pusher 84-2, 84-5,
This is because the subsequent cup 20 of each cup 20 taken out by 84-8 and 84-10 is locked by the locking plate 86 of the corresponding pad. Thus, when the pushers 84-2, 84-5, 84-8, 84-10 in the extended state are in the contracted state, the pads 85-2, 85-5, 85-
8, 85-10 can smoothly retract and return to the shortened state shown in FIG. 6 with the subsequent cups 20 stopped at their respective locked positions.

Next, the combination calculating means performs a combination calculation by variously combining the weights of the weighed articles 21, and the articles 21 (cups 20) selected for the combination are taken out of the stagnant conveyor 63 and transported. A procedure of moving the sheet onto the conveyor 64 and transporting the sheet into the discharge device 65 will be described.
Although not shown in the figure, the combination calculation means includes a calculation control unit (not shown) constituted by a central processing unit (CPU) and a storage unit (not shown) connected to the calculation control unit.
Is a means for performing a predetermined combination operation. That is, even within a given weight range total weight value of the combination thereof in combination with various respective weight value W _B of the objects to be weighed article 21 obtained by weighing predetermined by the metering device, a predetermined condition , For example, an article that constitutes a set that is equal to or closest to the target weight value.

The combination calculation by the combination calculation means is started when the operator operates the setting display section 87 and the preset combination calculation start memory number reaches K. The number of combination calculation start memories is a condition for the combination calculation means to start the combination calculation, and the condition is the number of cups 20 stopped on the stagnant conveyor 63 (weighing stored in the storage unit). requires the number of weight values W _B of the article) is set to be a, for example, K = 9 or more. That is, if the number of weight values stored in the storage unit is less than 9, even if the combination calculation is performed, there is a low possibility that the combination whose total weight is within the predetermined weight range is low, and therefore the combination calculation is not performed. When the number of values becomes nine or more and the possibility of selecting a combination increases, the combination calculation is performed. When the number of the cups 20 stopped on the staying conveyor 63 becomes less than nine, the empty cup pusher 70 is operated until the number of the cups 20 on the staying conveyor 63 becomes nine or more. Scale 2 of 62
, And transports four cups 20 containing the weighed articles onto the staying conveyor 63 at a time. And the staying conveyor 63
When the number of the upper cups 20 becomes nine or more, the conveyance of the cups 20 from the measuring device is automatically stopped.

As described above, when the number of cups 20 on the staying conveyor 63 becomes nine or more, the conveyance of the cups 20 from the weighing device is automatically paused. This is the pause period described. Then, the central processing unit operates the first lifting / lowering device 1 during the suspension period to measure the total weight W _HG of the four empty cups 20 on the transfer conveyor 66 by the first measuring device 3. Thus, the average weight W _H of the cup 20 is calculated. Then, the average weight W _H of the cup 20 calculated this time is the cup 20 obtained by weighing by the respective second measuring devices 62 and the articles 21 put in the cup 20.
As the weight of the cup 20 to be subtracted from the total weight W _G of, it is used in place of the average weight W _H 'of the cup 20 obtained by calculating the last time.

As described above, when nine or more predetermined cups 20 accumulate on the accumulating conveyor 63, the feeding of the cups 20 by the empty cup pusher 70 is stopped, and the first elevating device is stopped during this pause period. 1 is 4 empty cups 2
0 is moved up and down, and the first weighing device 3 measures the total weight of these four empty cups 20. Therefore, the first weighing device 3 empties without reducing the processing speed of the combination calculation. Can be weighed.

Next, the first to tenth pushers 84-1 to 84-10 for taking out the cup 20 selected for the combination from the staying conveyor 63 and moving it to the transport conveyor 64.
Will be described. These first to tenth pushers 84-1
84-10 can be taken out of the 12 cups 20 staying on the staying conveyor 63 shown in FIG.
Of the ten cups 20 from the top, the weight value of the articles 21 put in the ten cups 20 is also the weight value to participate in the combination.

Then, the cup 2 taken out by the first to tenth pushers 84-1 to 84-10 shown in FIG.
The transport means for transporting 0 to a predetermined discharge position 88 includes a transport conveyor 64 and a discharge device 65 shown in FIG.

Now, the article (weight value) is calculated by the combination calculating means.
For example, as shown in FIG. 7, the second article 21, the fifth article 21 and the eighth article 21
When the tenth article 21 is selected, the second, fifth, eighth, and tenth pushers 84-2, 84-5, 84-8, and 84-10 are selected as shown in FIG. By extending and driving, the cups 20 containing the second, fifth, eighth, and tenth articles 21 are extruded from the stay conveyor 63 and moved onto the transport conveyor 64. At this time, the shutters corresponding to the second, fifth, eighth, and tenth pushers 84 among the ten shutters (not shown) provided between the stay conveyor 63 and the transport conveyor 64 are lowered. The configuration is such that the cup 20 can be moved down to the position to transfer the cup. Then, the second, fifth, eighth, and tenth pushers 84-2, 84- in the extended state.
5, 84-8 and 84-10 are shortened and each pad 8
5-2, 85-5, 85-8, and 85-10 smoothly return to the original positions shown in FIG. 6 without hooking the subsequent cups 20.

Then, the second, fifth, eighth, and tenth four cups 20 moved on the conveyor 64
Is transported by the transport conveyor 64 and the discharge device 6
5. The second transported to the discharge device 65,
Fifth, eighth, and tenth cups 20 each correspond to article 2
1 are taken out, and these taken out articles 21 are packed by a packaging machine 89. On the other hand, the second, fifth, eighth, and tenth
Pushers 84-2, 84-5, 84-8, 84-1
When 0 is in the shortened state, the first, third,
Six cups 20 accommodating the fourth, sixth, seventh, and ninth articles 21 and two subsequent cups 20 are conveyed by the stay conveyor 63 and move forward. Also, 4
Four cups 20 containing the weighed articles are sequentially supplied to the staying conveyor 63 from the second weighing unit 62 of the table. The four cups 20 and the eight cups 20 on the staying conveyor 63, that is, a total of twelve cups 20 containing the weighed articles are conveyed and the leading cup 20 is moved by the stopper 73 as described above. The first cup 20 and the subsequent cups 20 are stopped on the stagnant conveyor 63 in a state where the first cup 20 and the subsequent cup 20 contact each other in a single row. Thereafter, the following combination operation is performed.

However, when the number of articles (weight values) 21 selected by the combination calculation is four, only eight cups 20 remain on the staying conveyor 63, so the number K of memory for starting the combination calculation is 9 Less than one and therefore four second
The next combination calculation is not performed until the cup 20 in which the next weighed article is put in from the measuring device 62 is discharged to the staying conveyor 63. The transport conveyor 64 is equivalent to the stay conveyor 63 and is a conventionally known plastic chain conveyor.

Next, the discharge device 65 will be described. The discharge device 65 includes an inclined conveyor 91 and a delivery conveyor 92 shown in FIG. The sending-out conveyor 92 is a plastic chain conveyor equivalent to the staying conveyor 63. The inclined conveyor 91 is connected to the transport conveyor 64, and is a cup 2 for storing the articles selected in the combination.
0s can be accepted four by four. These received cups 20 are sequentially conveyed obliquely upward in a state where four cups are arranged in one horizontal row, inverted at the rising end, fall, and stopped at a predetermined discharge position 88. In the discharge position 88, the articles 21 housed inside due to the fact that the cup 20 is inverted and the impact due to the drop of the cup 20 move the cup 2.
It is discharged from 0 and put into a packaging machine 89 provided below the cup receiving plate 93. And four empty cups 2
0 is conveyed by the air cylinder toward the delivery conveyor 92 (in the direction of arrow 95 in FIG. 6). The four empty cups 20 are conveyed by the sending-out conveyor 92, are inverted by 180 ° by the cup inverting device 96, and sent out to the transfer conveyor 66 with the cup 20 facing upward. And the transfer conveyor 66 is
The empty cups 20 are transferred to the terminal end portion 69 of the transfer conveyor 66, and four empty cups 20 accumulate at the terminal end portion 69, and as described above, a predetermined supply signal is output from the central processing unit. Then, the empty cup pusher 70 extends, and the pad 71 provided at the tip of the empty cup pusher 70 can send out the four empty cups 20 on the end portion 69 onto the input stage 61. In this way, the cup 20 can be circulated and the combination weighing of articles can be performed sequentially and continuously.

The order of the cups 20 arranged on the staying conveyor 63 changes each time the cup 20 selected as the combination is transferred from the staying conveyor 63 to the transport conveyor 64. Are stored in the storage unit in correspondence with the order in which the cups 20 are arranged after the order is changed. However, since this storage method is a conventionally known method, detailed description will be omitted.

In the above embodiments, the shape of the cup 20 is a short cylinder having a bottom. However, other shapes such as a polygonal cylinder having a bottom may be used.

In the above embodiments, the first measuring device 3 is configured to measure the total weight of the four cups 20. However, the first measuring device 3 measures the total weight of the plurality of A cups 20 other than four. It is good also as a structure which performs. At that time, the first and second
The number of rows in which the cups 20 of the elevating devices 1 and 58 and the input stage 61 are aligned with the number A. Then, in this case, the cup 20 into which the weighed article has been put is placed.
Indicates that the number of cups 20 on the stagnation conveyor 63 at the subsequent stage is (1
2-A) When the number of pieces becomes equal to or less than the number of pieces, the sheet is conveyed to the staying conveyor 63.

In each of the above embodiments, the cup 2
Although the weight of 0 is weighed four by one by the first measuring device 3, the total weight of the cup 20 is measured by the four measuring devices 49 similarly to the conventional measuring device shown in FIG. The weight may be measured one by one.

[0056]

According to the weighing device of the first invention, the first load detecting means for weighing the weight of the article to be weighed is additionally provided in the apparatus provided with the receiving means for transferring the article to be weighed and the stage. In this case, the lifting and lowering means capable of mutually placing the articles to be weighed between the receiving means and the mounting table without changing the distance between the receiving means and the stage and the installation space between them, and the mounting means on the mounting table. And first load detecting means for measuring the weight of the weighed article. This makes it possible to easily add the first load detecting means and the elevating means as options to an apparatus of a standard model which is not provided with the first load detecting means. Since the optional first load detecting means and elevating means can be easily added to the device of the standard model, the cost for adding the first load detecting means can be reduced, and the time required for the addition can be reduced. Can be reduced.

Then, the platform is moved up and down by the lifting / lowering means so that the articles to be weighed can be exchanged between the receiving means and the platform. Therefore, as in the conventional weighing device shown in FIG. The first elevating table 48 and the first weighing device 49 do not increase the space between the receiving means and the stage or the space for installing them, and a compact weighing device can be provided.

According to the weighing device of the second invention, the first
In the same manner as in the invention of the first aspect, the first load detecting means and the elevating means, which are optional, can be easily added to an apparatus of a standard model which is not provided with the first load detecting means. Thus, the cost of adding the first load detecting means can be reduced. In addition, the mounting table and the first load detecting unit do not increase the space between the receiving unit and the stage and the space for installing both, so that a compact weighing device can be provided. The first
The device without the load detection means is used as a standard model because, for example, even if a part of the article is not ejected from the article holding means and adheres and remains, the variation in the amount of adhesion is small. Does not have a significant effect on the weighing accuracy of the articles put into the article holding means,
This is because the first load detecting means may not be required. Therefore, when there is a large variation in the weight of the articles attached to the article holding means, the first load detecting means and the elevating means can be added to the standard device.

According to the weighing device of the third invention, the total weight of a plurality of articles to be weighed or article holding means (hereinafter referred to as "articles to be weighed") is weighed by the first load detecting means. Therefore, it is possible to reduce the weighing time as compared to weighing the articles to be weighed one by one. in this way,
By increasing the number of articles to be weighed at a time without increasing the number of first load detecting means, the weighing time can be shortened, thereby reducing the cost of the first load detecting means. Can be achieved. In other words, when the articles put into the article holding means are ejected from the article holding means, the weight of the remaining articles which are not ejected from the article holding means and adhere to the article holding means greatly varies. Even if the weight of the article holding means is accurately weighed one by one, the weight of the article discharged from the article holding means may not be known accurately. In this case, the configuration of the third invention Adopting is economically superior.

According to the weighing device of the fourth aspect of the present invention, since the elevating means raises and lowers both the mounting table and the first load detecting means, the mounting table is fixed to the first load detecting means. Thus, the connecting portion between the mounting table and the first load detecting means can have a simple structure. As a result, a decrease in weighing accuracy can be prevented, and the cost can be reduced. .

According to the combination weigher of the fifth invention, when a predetermined number or more of the article holding means stay on the staying means, the feeding of the article holding means by the sending means is stopped, and the lifting / lowering means is stopped during this halt period. Is configured to raise and lower the empty article holding means and weigh the weight of the empty article holding means by the first load detection means, so that the first load detection means can reduce the processing speed of the combination calculation without lowering the processing speed. The weight of the empty article holding means can be measured.

[Brief description of the drawings]

FIG. 1 is a partial sectional view showing a main part of a weighing device according to a first embodiment of the present invention.

FIG. 2 is a front view showing a mounting table of the weighing device according to the first embodiment.

FIG. 3 is a plan view showing a mounting table of the weighing device according to the first embodiment.

FIG. 4 is a plan view of the weighing device according to the first embodiment.

FIG. 5 is a partial cross-sectional front view of the weighing device according to the first embodiment.

FIG. 6 is a plan view of a combination weigher according to a second embodiment of the present invention.

FIG. 7 is a partial plan view showing a state where a pusher of the combination weigher according to the second embodiment pushes out a cup containing a selected article.

FIG. 8 is a partial sectional front view of a conventional weighing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st raising / lowering apparatus 2 mounting base 3 1st measuring device 12 spring mechanism 13 raising / lowering drive cylinder 20 cup 21 article to be measured 61 input stage 62-1 to 62-4 2nd measuring device 63 staying conveyor 66 transfer conveyor 70 Empty cup pusher

Claims (5)

[Claims] A receiving means for receiving an article to be weighed;
A first load detecting unit that has a mounting table and weighs the weight of the article to be weighed mounted on the mounting table; and Lifting and lowering means for replacing the article to be weighed on the table with the receiving means by lowering the table to the lower position, and placing the article to be weighed on the receiving means at a subsequent stage. Sending means for sending on the stage,
A weighing device comprising: 2. A receiving means for receiving the article holding means, a first load detecting means having a mounting table and measuring the weight of the article holding means mounted on the mounting table, The article holding means on the receiving means is replaced on the table by raising the table, and the article holding means on the table is replaced on the receiving means by lowering the table to the lowered position. Means, sending means for sending the article holding means received by the receiving means onto the following loading stage, and article holding means on the receiving means provided at the subsequent stage of the receiving means and sequentially sent out by the sending means. For receiving the articles and feeding the articles to the article holding means in the middle of the conveyance. An input stage, provided at the latter stage of the input stage, receives the article holding means into which the articles sequentially sent out by the sending means have been input, and receives the articles held by the article holding means and the articles input to the article holding means. A second load detecting means for weighing the total weight. 3. The weighing device according to claim 1, wherein the first load detecting means includes a plurality of articles to be weighed or article holding means (hereinafter, referred to as “articles to be weighed”) on the table. ) Is weighed, the total weight of them is weighed, and this total weight is divided by the number of articles to be weighed placed on the above table to calculate the average value of the articles to be weighed. A weighing device comprising a calculation means. 4. The weighing device according to claim 1, wherein said lifting means raises and lowers both said table and said first load detecting means. . 5. A receiving means for receiving the article holding means, a first load detecting means having a mounting table and measuring the weight of the article holding means mounted on the mounting table, and the above-mentioned table being raised to a raised position. The article holding means on the receiving means is replaced on the table by raising the table, and the article holding means on the table is replaced on the receiving means by lowering the table to the lowered position. Means, sending means for sending the article holding means received by the receiving means onto the following loading stage, and article holding means on the receiving means provided at the subsequent stage of the receiving means and sequentially sent out by the sending means. For receiving the articles and feeding the articles to the article holding means in the middle of the conveyance. An input stage, provided at the latter stage of the input stage, receives the article holding means into which the articles sequentially sent out by the sending means have been input, and receives the articles held by the article holding means and the articles input to the article holding means. Second load detecting means for measuring the total weight, staying means for storing the plurality of article holding means into which the articles weighed by the second load detecting means are put, and staying on the staying means Combination calculating means for variously combining the respective weight values of the articles put into the article holding means and selecting an article constituting a set whose total weight value is within a predetermined weight range among the combinations; In the combination weigher, the delivery means suspends the delivery of the article holding means when a predetermined number or more of the article holding means stay on the staying means, and A combination weigher wherein the lifting means raises and lowers the article holding means on the receiving means during a stop period, and the first load detecting means weighs the weight of the article holding means.