JP3587618B2 - Combination weighing device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for automatically supplying an appropriate amount of viscous material to each measuring section in a combination weighing device that combines and discharges objects to be weighed measured by a plurality of measuring sections.
[0002]
[Prior art]
Among the combination weighing devices, those that automatically supply an appropriate amount of an object to be weighed to a plurality of weighing units are divided into a plurality of paths and supplied in advance to individual supply units for each weighing unit. In addition, the object to be weighed is quickly supplied from the individual supply device to the measuring section from which the object to be weighed is discharged.
[0003]
Conventionally, in order to automatically supply the objects to be weighed to such a weighing unit, the objects to be weighed are supplied on a circular umbrella-shaped vibrating dispersion feeder, and the objects to be weighed dispersed by the dispersion feeder are dispersed. The weighing object is unloaded from the pool hopper to the empty weighing hopper by unloading the objects to be weighed to the empty weighing hoppers. Was to supply.
[0004]
However, in the combination weighing device using such a vibration type dispersion feeder, when the object to be weighed is strongly sticky such as pickles or cooked meat, it can be evenly and smoothly supplied to each straight-ahead feeder. There was a problem that could not be done.
[0005]
In order to solve this, a combination weighing device as shown in FIGS. 18 and 19 has also been proposed.
[0006]
In this combination weighing device, an object to be weighed is supplied to a tank 1 having an open top and a bottom, and a plurality of screw type (or vibration type) supply devices 2 are arranged below the tank 1 so that each supply device 2 The objects to be weighed supplied to the pool hopper 6 are respectively supplied to the weighing hoppers 7 and weighed, a combination is selected based on the weighing results, and the selected objects to be weighed are discharged from the weighing hoppers and collected by the collecting device 8. Discharge.
[0007]
Here, each supply device 2 includes a gutter-shaped guide 3 having one end located below the tank 1 and the other end extending above the pool hopper 6, and a screw 4 rotatably supported in the guide 3. And a motor 5 that rotates the screw 4 from one end of the guide 3 and feeds the object to be weighed in the tank 1 along the guide 3.
[0008]
The pool hopper 6 and the weighing hopper 7 are opened and closed by slide-type bottom plates 6a and 7a so as to reliably discharge an object to be weighed having high adhesiveness. The weighing hopper 7 is supported by the weighing device 10 in the housing 9.
[0009]
According to such a combination weighing device, an adhesive material to be weighed can be supplied to each weighing hopper 7 in an appropriate amount.
[0010]
[Problems to be solved by the invention]
However, when the entire lower surface of the tank 1 is always open as in this combination weighing device, the load of the object to be weighed in the tank 1 is directly applied to the screw 4 of each supply device 2, and the conveyance force of the supply device 2 However, there is a problem that the amount of the object to be weighed fluctuates greatly depending on the amount of the object to be weighed in the tank, the supply amount of the object to be weighed to the weighing hopper greatly fluctuates, and the accuracy of combination decreases. This problem similarly occurs even when a vibrating linear feeder is used as the supply device 2.
[0011]
Also, when the object to be weighed enters the bridge state at a position above the supply device 2, the object to be weighed cannot be supplied from the supply device 2 until the bridge state is broken, and an empty weighing hopper is generated for a long time, There is also a problem that the number of combinations of the objects to be weighed is reduced and the weighing accuracy is reduced.
[0012]
The present invention solves this problem and provides a combination weighing device capable of smoothly and stably supplying an appropriate amount of an object to be weighed strongly to an individual feeder for each weighing unit. The purpose is.
[0013]
[Means for Solving the Problems]
In order to solve the above problem, a combination weighing device according to claim 1 of the present invention is
StickyA plurality of weighing units for weighing the objects to be weighed, and a plurality of individual feeders for supplying the objects to be weighed to each of the weighing units, and the weighed objects weighed by the plurality of weighing units are added to the measurement results. In combination weighing device that discharges combination based on
A weighing object tank formed in a bottomed shape to receive the weighing object from above and house it inside, and a plurality of discharge ports provided at the bottom for discharging the weighing object housed inside downward,
It has a shape that expands downward, and has a bottom surface with an outer shape slightly smaller than each of the discharge ports in the object tank,Each of the outlets is supported at a position above and below the outlet so as to be capable of ascending and descending, and descends to the corresponding outlet to narrow the flow path of the object to be weighed to the outlet.And pushes out the object to be weighed remaining near the discharge port with the bottom surface.Rises and widens the flow path of the object to be weighed to the outletTo stir the object in the object tankMultiple regulatory bodies,
A sensor for detecting an object to be weighed of each of the individual feeders,
Up and down each of the regulatorsThe regulating body corresponding to the individual feeder at which the sensor detects that the object to be weighed has been reduced by at least the sensor is driven up and down, andSupply the weighing object to the individual feederAt the same time, the object to be weighed in the vicinity of the corresponding discharge port in the object to be weighed is stirred.And a driving device.
[0014]
Further, in the combination weighing device of claim 2 of the present invention,
The bottom plate of the object tank is inclined toward the discharge port,
An outlet corresponding to the regulating body when the regulating body is risingAlong the bottom plate that is inclined towardA plurality of auxiliary bodies that move and assist the outflow of the object to be weighed near the outlet are provided in the object tank corresponding to each outlet.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram schematically showing the entire structure of one embodiment of the present invention, and FIGS. 2 to 13 show the detailed structure of a combination weighing device of one embodiment.
[0016]
As shown in FIGS. 2 to 4, the combination weighing device 20 is supported on a base 22 having four legs 21.
[0017]
On the base 22, a substantially rectangular parallelepiped main housing 23 is supported. At the four corners of the upper surface 23a of the main housing 23, columns 24 are erected, and the frame 25 is supported above the main housing 23 by the four columns 24.
[0018]
The frame 25 is formed in a substantially U-shape when viewed from above with a horizontally long rectangular front plate 25a and side plates 25b and 25c bent backward from both ends of the front plate 25a. , Is fixed to the upper end of the column 24.
[0019]
Rails 26 are horizontally fixed to the inner surfaces of both side plates 25b and 25c of the frame 25. In the center of the upper surface 23a of the main housing 23, columns 27 are erected in front and rear, and the front and rear ends of a rail 28 are supported on the upper ends of the two columns 27.
[0020]
Inside the frame 25, two object tanks 30 are supported side by side. As shown in FIGS. 4 to 6, the object tank 30 includes a front plate 30 a having a substantially oblong rectangular shape as viewed from the front, inverted trapezoidal side plates 30 b and 30 c bent rearward from both ends of the front plate 30 a, and a side plate. An outer peripheral portion is formed by a rear plate 30d which is inclined so as to connect the rear edges of 30b and 30c.
[0021]
The bottom portion of the weighing object tank 30 is constituted by a bottom plate 31 bent so as to be inclined inward and downward from the lower edges of the side plates 30b and 30c, respectively, and four bottom plates 32 bent in a mountain shape when viewed from the front. Five discharge ports 35 opened in a rectangular shape are formed between 31 and 32.
[0022]
Guide plate attachment portions 31a and 32a that are bent in the vertical direction extend from lower edges of the bottom plates 31 and 32, and a guide plate 36 is attached to each of the guide plate attachment portions 31a and 32a.
[0023]
Further, the lower surface of the bottom plate 31 on both ends is slidably contacted with rails 26 and 28 attached to the frame 25 and the support column 27 so as to horizontally move the object tank 30 in the front-rear direction. A body 37 is attached.
[0024]
A handle 38 for gripping the object tank 30 when moving the object tank 30 is attached to the outer peripheral surface of the rear plate 30d of the object tank 30. The front plate portion 30a is locked at a position where the front plate portion 30a overlaps the front plate 25a of the frame 25 by a locking mechanism (for example, a hook mechanism called a pin lock mechanism or a patch lock). Can be done.
[0025]
On the other hand, on the front side of the front plate 25a of the frame 25, a first drive housing 40 is attached. The first drive housing 40 is formed in a horizontally long rectangular shape having substantially the same width as the front plate 25a of the frame 25, and its front side is closed by two covers 41 that can be opened and closed (opening and closing mechanism is not shown). I have.
[0026]
As shown in FIG. 7, a middle plate 42 is provided in the middle of the first drive housing 40 so as to partition the inside vertically. Air cylinders 43 and 44 are attached to the middle plate 42 at positions corresponding to the respective discharge ports 35 of the object tank 30 attached to the back side thereof so as to be arranged in front and rear. The cylinder shafts 43a, 44a of the air cylinders 43, 44 project toward the lower surface of the middle plate 42.
[0027]
Further, intermediate shafts 45 and 46 are respectively supported on the sides of the air cylinders 43 and 44 so as to be able to move up and down. The intermediate shafts 45 and 46 are supported such that their lower portions project toward the lower surface of the middle plate 42 and their upper portions project toward the upper surface of the upper plate 40 a of the first drive housing 40. Is connected to a cylinder shaft 43a of the air cylinder 43 via a connecting member 47, and a lower portion of the intermediate shaft 46 is connected to a cylinder shaft 44a of the air cylinder 44 via a connecting member 48. For this reason, when the air cylinders 43 and 44 are driven and their cylinder shafts 43a and 44a move up and down, the intermediate shafts 45 and 46 connected thereto also move up and down.
[0028]
The elevation of the intermediate shafts 45, 46 is guided by guides 49, 50 attached to the upper plate 40a of the first drive housing 40 and guides 51, 51 attached to the middle plate 42. . The guide body 49 guides a vertical movement of an intermediate portion of a shaft 57 of a regulating body 56 to be described later at its tip.
[0029]
Connecting members 53 and 54 are attached to the upper portions of the intermediate shafts 45 and 46, respectively. One end of the connecting member 53 is locked to the intermediate shaft 45, and the other end extends to a position above the discharge port 35 of the object tank 30. The connecting member 54 is formed in a substantially U-shape when viewed from above, and its intermediate portion 54a is locked to the intermediate shaft 46, and two arms 54b projecting in parallel from both ends of the intermediate portion 54a. Extends to a position above the inclined surface of each of the bottom plates 31 and 32.
[0030]
The intermediate shafts 45, 46 and the connecting members 53, 54 are locked by an eccentric locking mechanism so that attachment and detachment can be easily performed. That is, as shown in FIG. 8, the small diameter portions 45a, 46a are provided slightly below the ends of the intermediate shafts 45, 46, and the rings 45b, 46b are loosely fitted to the small diameter portions 45a, 46a, and the small diameter portions 45a, 46a are loosely fitted. Spring members 45c, 46c are attached between the outer circumferences of the parts 45a, 46a and the inner circumferences of the rings 45b, 46b, and the rings 45b, 46b are biased so as to be eccentric with respect to the intermediate shafts 45, 46, The connecting members 53 and 54 are supported between the lower ends of the rings 45b and 46b and the large diameter portions 45d and 46d of the intermediate shafts 45 and 46 so as to sandwich the connecting members 53 and 54. Then, if the rings 45b and 46b are pushed so as to be concentric with the intermediate shafts 45 and 46 and the connecting members 53 and 54 are pulled up, the connecting members 53 and 54 can be removed from the intermediate shafts 45 and 46.
[0031]
Slots 53a and 54c are provided at the tip of the connecting member 53 and the tip of the arm 54b of the connecting member 54, and the slit gap is narrowed or widened by tightening or loosening the screw 55. Accordingly, the support height of the later-described regulating body 56 and the auxiliary body can be set at an arbitrary position.
[0032]
As shown in FIGS. 10 and 11, a restricting body 56 is supported on the other end of each connecting member 53. The regulating body 56 is integrally formed by a round bar-shaped shaft 57 and a trapezoidal regulating block 58 provided at the lower end of the shaft 57, and the upper portion of the shaft 57 is fixed to the other end of the connecting member 53. The restricting block 58 is supported at a position above each of the discharge ports 35 of the tank 30 to be weighed so as to be able to move up and down while sliding its front surface against the inner peripheral surface of the front plate 30 a of the tank 30 to be weighed. .
[0033]
A plurality of vertical grooves 59 are formed on the front side of the regulating block 58 so that the contact area with the inner peripheral surface of the front plate 30a of the object tank 30 can be reduced and the container can be moved up and down smoothly. Also, the bottom surface of the regulating block 58 does not bite the weighing object between the bottom plate 31 and the edge of the weighing object tank 32 when the lower end is lowered to the lowermost end, and the weighing object does not fall off. , Is formed in a closed rectangular shape slightly smaller in outer shape than the discharge port 35. The lower limit position of the restricting body 56 is set in advance so that the bottom surface of the restricting block 58 is substantially at the same height as the discharge port, and its lifting stroke is adjusted by a stopper mechanism (not shown) according to the type of the object to be weighed. The length is set in advance so as to have a predetermined length.
[0034]
On the other hand, an auxiliary body for assisting the outflow of the object to be weighed to the discharge port 35 is supported at the tip of the arm portion 54 b of each connecting member 54. As shown in FIG. 10, the auxiliary body has a pair of round bar-shaped support shafts 61 whose upper parts are fixed to the two arms 54 b of the connecting member 54, and the inner periphery of the front plate 30 a of the object tank 30. It is composed of a pair of rotary levers 62 whose upper parts are connected to a support shaft 61 so as to be rotatable on a plane along the surface, and a spring member 63 hung between upper ends 62 a of the rotary levers 62. The lower ends 62b of the pair of rotary levers 62 are bent in a direction perpendicular to the inner peripheral surface of the front plate 30a of the object tank 30.
[0035]
The rotation lever 62 is provided with a stopper pin 64 that abuts on the support shaft 61 so that the lower portion does not open in a C shape due to the urging force of the spring material 63. For this reason, when the air cylinder 44 is driven and the intermediate shaft 46 is lowered, the auxiliary body is lowered, and the lower end 62 b of the rotating lever 62 is discharged on the inclined surfaces of the bottom plates 31 and 32 of the tank 30 to be weighed. It will slide toward 35.
[0036]
A sensor support member 65 is attached to the upper surface of the first drive housing 40, and the tip of the sensor support member 65 optically detects the amount of the object in the object tank 30. A tank sensor 66 is attached. Two tank sensors 66 are provided for each tank, and when one of them detects shortage of the objects to be weighed, the bucket conveyor 10 (see FIG. 1) is driven to replenish the objects to be weighed. A feeder sensor 67 for detecting the amount of the object to be weighed on a rectilinear feeder 71 described below is attached to the lower surface side of the first drive housing 40.
[0037]
A straight feeder 71 is disposed below each discharge port 35 of the tank 30 to be weighed. Each rectilinear feeder 71, together with a pool hopper 73 described later, constitutes an individual feeder of this embodiment, and is fixed to the upper surface of the main housing 23 and a vibrator (not shown) in the second drive housing 68. ) Vibrates the trough 72 obliquely upward and forward, and conveys the objects to be weighed discharged from the discharge port 35 to the front end side of the trough 72.
[0038]
The lower ends of the guide plates 36 attached to both sides of the discharge port 35 are located inside the guide portions on both sides of the trough 72 as shown in FIG. The weighing object is not spilled to the side.
[0039]
A pool hopper 73 is disposed below the leading end side of each linear feeder. As shown in FIG. 12, the pool hopper 73 is composed of a cylindrical body 74 opened up and down with a synthetic resin, and a bottom plate 80 described later. Flanges 74a and 74b are provided on the front and rear edges of the lower portion of the tubular body 74, and two locking holes 75 are provided on one of the flanges 74a.
[0040]
The pool hopper 73 is supported by a frame 76 attached to the left and right sides of the front surface of the second drive housing 68. That is, five pin fixing plates 77 are attached to the inside of the front plate 76 a of each frame body 76 at predetermined intervals, and the pin fixing plates 77 are provided with locking holes for the cylindrical body 74 of the pool hopper 73. Two locking pins 78 are erected at the same interval as 75. A pair of guide shafts 79 are respectively installed between the front plate 76a of the frame body 76 and the front surface of the second drive housing 68 in parallel on both sides of the pair of locking pins 78. Above 79, bottom plates 80 are respectively supported. The bottom plate 80 is engaged with one of the guide shafts 79 on the lower surface side, and is supported so as to be slidable in the front-rear direction.
[0041]
The cylindrical body 74 of the pool hopper 73 faces the flange 74 a on which the locking hole 75 is provided, and the bottom plate 80 with the locking hole 75 locked by the pair of locking pins 78. It is supported so as to be placed on the top.
[0042]
The bottom plate 80 is formed in a substantially rectangular shape large enough to close the lower opening surface of the cylindrical body 74, and the rear side of one side thereof is formed by a cylinder shaft of an air cylinder 81 provided in the second drive housing 68. The air cylinder 81 retracts the bottom plate 80 to open the pool hopper 73, pushes the bottom plate 80 forward, and closes the pool hopper 73.
[0043]
Below each pool hopper 73, a weighing hopper 83 is arranged. As shown in FIG. 13, the weighing hopper 83 includes a cylindrical body 84 and a bottom plate 90 having the same shape as the cylindrical body 74 and the bottom plate 80 of the pool hopper 73. The cylindrical body 84 of the weighing hopper 83 is supported in a direction in which the front and rear directions are opposite to the cylindrical body 74 of the pool hopper 73, and one of the flanges 84a and 84b provided at the front and rear lower portions thereof. The two locking holes 85 of 36 a are engaged with two locking pins 88 of a hopper support 87 supported in front of a third drive housing 86 on the front side of the main housing 23.
[0044]
At both ends of the hopper support 87, a pair of guide shafts 89 extending parallel to the front at a slightly wider interval than the locking pin 88 is attached. A bottom plate 90 that is guided by a guide shaft 89 and is slidable in the front-rear direction is supported, and the tubular body 84 is supported so as to be placed on the bottom plate 90. The rear side of one side of the bottom plate 90 is detachably connected to the tip of a cylinder shaft 91 a of an air cylinder 91 in the third drive housing 86.
[0045]
The air cylinder 91 moves the bottom plate 90 forward to open the weighing hopper 83 and retracts the bottom plate 90 to close the weighing hopper 83.
[0046]
The hopper support 87 is detachably connected via a locking mechanism 93 to a disc-shaped connecting plate 92 arranged on the front surface of the third drive housing 86. The connecting plate 92 is supported by each load cell 94 fixed in the third drive housing, and the air cylinder 91 is also fixed to the connecting plate 92, and its cylinder shaft 91a passes through the connecting plate 92. Thus, the third drive housing 86 protrudes forward.
[0047]
Accordingly, the load of the cylindrical body 84, the hopper support 87, the guide shaft 89, the bottom plate 90, the air cylinder 91, the connecting plate 92, and the locking mechanism 93 is constantly applied to the load cell 94, and the load to be weighed is added to the steady load. Will be added.
[0048]
A timing hopper 95 is arranged below each of the weighing hoppers 83. The timing hopper 95 has exactly the same configuration as the pool hopper 73. That is, as shown in FIG. 12, the cylindrical body 96 of the timing hopper 95 has a front side with the flange portion 96 a provided with the two locking holes 97 among the flange portions 96 a and 96 b at the front and rear ends. In this state, the locking hole 97 is locked by a locking pin 100 protruding from a pin fixing plate 99 of a front plate 98a of a frame 98 fixed to the left and right of the front surface of the main housing 23, The frame 98 is mounted on a bottom plate 102 that is supported on a pair of guide shafts 101 laid in parallel between the front plate 98a of the frame 98 and the front surface of the main housing and slides back and forth.
[0049]
The rear side of one side of the bottom plate 102 is detachably connected to a tip of a cylinder shaft 103 a of an air cylinder 103 in the main housing 23. The air cylinder 103 opens the timing hopper 95 by moving the bottom plate 102 backward, and closes the timing hopper 95 by moving the bottom plate 102 forward.
[0050]
Below the timing hopper 95, two conveyors 105 are arranged on the left and right. Both conveyors 105 are supported on the front surface of the main housing 23. The left conveyor 105 receives the objects to be weighed discharged from the five left timing hoppers and conveys them to the right end. The objects to be weighed discharged from the five timing hoppers are received and conveyed to the left end.
[0051]
A cover 107 is provided between the conveyor 105 and the timing hopper 93 to prevent the objects to be weighed discharged onto the conveyor from spilling. The cover 107 is supported by the frame 98.
[0052]
Below the two conveyors 105 and 106, a funnel-shaped collecting chute 108 is supported. The collecting chute 108 is supported so as to be slidable forward by a supporting member 109 attached to a lower front end of the main housing 23.
[0053]
The operation of the combination weighing device 20 thus configured is controlled by a control device (not shown). Hereinafter, the operation of the combination weighing device by the control device will be described.
[0054]
The objects to be weighed are sufficiently stored in the left and right weighing object tanks 30 in advance, and there is an appropriate amount of the weighing objects on the troughs 72 of the respective linear feeders 71. Are stored in an appropriate amount, and the weight of the object to be weighed in the weighing hopper is detected based on the output signal of each load cell 94.
[0055]
Here, when there is a combination discharge request, a combination whose combination weight is within a predetermined target weight range is selected from the objects to be weighed contained in each weighing hopper 83, and the selected weighing target is selected. The weighing hopper 83 containing the weighing object is opened, and the objects to be weighed in the weighing hopper are stored in the corresponding timing hoppers 95.
[0056]
The timing hopper 95 that receives the objects to be weighed is opened and closed in order from the one farthest from the collecting chute 108 in accordance with the transport speed of the conveyor 105. For this reason, the objects to be weighed contained in the timing hopper 95 are conveyed while being collected at substantially the same position on the conveyor 105, carried out to the collecting chute 108, and sent to a packaging machine or a packaging line (not shown).
[0057]
During this time, the object to be weighed is supplied to the empty weighing hopper 83 from the corresponding pool hopper 73, and the object to be weighed is supplied to the empty pool hopper 73 from the rectilinear feeder 71 by an appropriate amount.
[0058]
Hereinafter, the same operation is repeated, and the objects to be weighed, which are selected in combination, are sequentially collected and discharged. However, the objects to be weighed W on the trough 72 of the linear feeder 71 are shifted to the positions shown in FIGS. When the decrease is detected by the feeder sensor 67 as shown in FIG. 4), the air cylinder 43 in the first drive housing 40 corresponding to the linear feeder 71 is driven and connected to the air cylinder 43. The regulating block 58 of the regulating body 56 rises away from the outlet 35 as shown in FIG. 14B and FIG. 15B.
[0059]
At this time, the air cylinder 44 is also driven in the reverse direction, and the lower ends 62 a of the pair of rotating levers 62 of the auxiliary body connected to the air cylinder 44 are inclined by the inclination of the bottom plates 31 and 32 of the tank 30 to be weighed. Descend along the surface.
[0060]
Therefore, the flow path to the discharge port 35 is widened, and the objects to be weighed around the restriction block 58 flow toward the discharge port 35 and are discharged from the discharge port 35 onto the trough 72 of the straight feeder 71.
[0061]
Then, as shown in FIG. 14C, when the regulating block 58 is lowered and the flow path of the object to be weighed to the outlet 35 is narrowed, the amount of the object to be weighed discharged from the outlet 35 is reduced. Further, when the regulating block 58 returns to the lowermost position as shown in FIG. 14D and FIG. 15C, the objects to be weighed remaining near the discharge port 35 are pushed out to the bottom surface of the regulating block 58. And falls onto the trough 72, and thereafter, the discharge of the object to be weighed from the discharge port 35 stops. The rotation lever 62 of the auxiliary body is lowered at least once while the restriction block 58 is raised, to assist the flow of the object to be measured to the discharge port.
[0062]
Note that, here, since the stop is performed with a slight gap between the bottom edge of the regulating block 58 and the inner edge of the discharge port 35 in order to prevent the object to be sandwiched from being pinched, the small object to be weighed falls from the gap. However, the amount of the fall is small and the weighing object does not fall directly to the weighing hopper, so that the weighing is not affected.
[0063]
Since such an operation is performed independently for each of the rectilinear feeders, an appropriate amount of the weighing target is supplied to each of the rectilinear feeders, and the supply amount of the weighing target to each of the weighing hoppers is also stabilized.
[0064]
Since each of the restriction blocks 58 moves up and down in the weighing object tank 30 and has a shape that expands downward, the weighing object tank is moved when the restriction block 58 moves up and down. The effect of stirring the object to be weighed in 30 is produced. Therefore, even if a bridge of the object to be weighed temporarily occurs above the discharge port 35, the bridge state can be immediately broken.
[0065]
Also, as the regulating block 58 rises, the lower end 62b of the auxiliary body rotation lever 62 moves toward the discharge port 35 along the inclined surface of the bottom plates 31 and 32, thereby catching the lower end side of the object to be weighed on the bottom plate. The object to be weighed easily flows to the discharge port 35.
[0066]
Further, since the regulation block 58 receives the load of the object to be weighed in the object tank 30, the load of the object to be weighed in the object tank 30 is not directly applied to each linear feeder 71. Variations in the conveying force of the feeder 71 are reduced, the amount of the objects to be weighed supplied to the weighing hopper 83 is stabilized, and the weighing accuracy is improved.
[0067]
In this way, while the weighing object in the weighing object tank 30 is supplied to the weighing hopper 83 through each of the linear feeders 71 and the pool hopper 73, the weighing object in the weighing object tank 30 decreases. Is detected by the tank sensor 66, the bucket conveyor 10 is driven, and a new object to be weighed is supplied to the object tank 30. The worker may supply the object to be weighed to the object tank 30. In this case, a lamp or a buzzer may be driven by the output of the tank sensor 66 to urge the operator to replenish the object to be weighed.
[0068]
Further, as described above, the regulating body 56 and the auxiliary body can be removed from the intermediate shafts 44 and 45 by a simple operation, and the weighing object tank 30 itself is slid to the rear side of the apparatus so that it can be removed from the apparatus. Since it can be removed, cleaning and maintenance work can be performed easily.
[0069]
In addition, the regulating body 56, the auxiliary body, and the object tank 30 are removed, and the object to be weighed is manually supplied to the linear feeder or the pool hopper, or a hole is provided at a position corresponding to the linear feeder 71. A flat table may be slid and mounted in place of the weighing object tank 30, and the weighing object on the table may be manually sent to each hole and supplied to a linear feeder or a pool hopper.
[0070]
In the above description, the case where the supply of the objects to be weighed from the object tank 30 to the respective linear feeders 71 is performed intermittently has been described. The weighing object is set at a position higher than the discharge port 35 by a predetermined distance so that the weighed material always flows out little by little, and the driving frequency of the straight feeder becomes high, or the flow amount becomes extremely small due to a bridge or the like. The restriction block 58 may be raised only when the object to be weighed extremely decreases. In this case, the auxiliary body may be driven to move up and down at all times to prevent the object from being bridged near the discharge port of the object.
[0071]
[Other embodiments]
In the above-described embodiment, two sets of the weighing object tank 30 having five outlets at the bottom are used. However, the present invention is not limited to this. For example, one weighing object having ten outlets is used. A tank may be used, or three sets of weighing object tanks having four discharge ports may be used.
[0072]
Further, in the weighing object tank 30 of the embodiment, the plurality of discharge ports are provided in a horizontal row. However, for example, as in the weighing object tank 110 shown in FIGS. The restriction members 56 may be provided radially and supported above the discharge ports 111 respectively. In this case, the outer shape of the weighing object tank 110 is formed in a square cylindrical shape or a cylindrical shape, a mountain-shaped bottom plate 112 is provided between the discharge ports 111, and the center 113 of the bottom is formed in a pyramid shape or a conical shape. do it. In FIGS. 16 and 17, reference numeral 40 'denotes a drive housing in which a drive device for driving each of the regulating bodies 56 up and down is housed.
[0073]
Further, in the above-described embodiment, the bottom between the discharge ports of the weighing object tank 30 is formed in a mountain shape so that the weighing object in the tank easily flows to the discharging port. When the strength is not particularly strong or when the distance between the outlets can be reduced, the bottom between the outlets may be flattened.
[0074]
In the above-described embodiment, the lower end of the auxiliary body is slid along the bottom of the chevron between the discharge ports to assist the outflow of the object to be weighed. May be omitted.
[0075]
In the above embodiment, the auxiliary body is driven by the driving device (air cylinder 44) independent of the driving device (air cylinder 43) of the regulating body. However, the auxiliary body and the regulating body are connected via the link mechanism. In addition, the driving device side can be simplified by linking the auxiliary body to the raising / lowering operation of the regulating body.
[0076]
Further, the regulation block, which is the body of the regulation body of the embodiment, is formed in a trapezoidal shape so as to spread downward, but, for example, the regulation body is formed in a cylindrical shape or a rectangular tube shape, and is formed on the outer periphery thereof. A member for stirring the object to be weighed may be protruded.
[0077]
In the above-described embodiment, the weighing object discharged from the weighing object tank is supplied to the weighing hopper 83 via the linear feeder 71 and the pool hopper 73 as individual feeders. The object to be weighed discharged from the object tank may be directly supplied to the pool hopper 73. In this case, the lifting stroke of the regulating body is adjusted according to the type of the object to be weighed, the target weight, or the like, or the time during which the regulating body is raised is set, and an appropriate amount of the object to be weighed is set in each pool hopper. Is supplied.
[0078]
【The invention's effect】
As described above, in the combination weighing device of the present invention, the regulating body is moved up and down at a position above each discharge port in the weighing object tank provided with a plurality of discharge ports on the bottom, so that the measurement The object to be weighed is supplied to each individual supply device by expanding or narrowing the flow path of the object to each discharge port, and the object to be weighed is supplied from each individual supply device to the measuring section.
[0079]
Therefore, the load of the object to be weighed in the object tank is not directly applied to the individual feeder, and the object to be weighed is stably supplied to the weighing unit without greatly affecting the operation of the individual feeder. be able to.
[0080]
In addition, since the regulating body itself moves up and down in the weighing object tank, a bridge of the weighing object is less likely to be generated in the weighing object tank, and the weighing object can be smoothly supplied to the individual feeder. .
[0081]
Also, when the regulating body is raised, the auxiliary body that moves to the discharge side corresponding to the regulating body and assists the outflow of the weighing object near the discharge port is associated with each of the discharge ports. Since it is provided in the tank, the object to be weighed having high adhesiveness can be smoothly discharged.
[Brief description of the drawings]
FIG. 1 is a schematic diagram of an embodiment of the present invention.
FIG. 2 is a front view of one embodiment.
FIG. 3 is a side view of one embodiment.
FIG. 4 is a plan view of one embodiment.
FIG. 5 is a side view of an object tank according to an embodiment;
FIG. 6 is a side view of an object tank according to one embodiment;
FIG. 7 is a perspective view showing the inside of a drive housing of one embodiment.
FIG. 8 is a cross-sectional view showing a locking mechanism between the intermediate shaft and the connecting member according to the embodiment;
FIG. 9 is a perspective view showing a support mechanism of a connecting member, a regulating body, and an auxiliary body according to one embodiment;
FIG. 10 is a perspective view of a regulating body and an auxiliary body according to an embodiment.
FIG. 11 is a perspective view of a regulating body according to one embodiment.
FIG. 12 is a perspective view of a pool hopper and a timing hopper of one embodiment.
FIG. 13 is a perspective view of a weighing hopper according to one embodiment.
FIG. 14 is an operation explanatory diagram of one embodiment.
FIG. 15 is a diagram illustrating an operation according to an embodiment;
FIG. 16 is a plan view of a main part of another embodiment of the present invention.
FIG. 17 is a sectional view taken along line AA of FIG. 16;
FIG. 18 is a schematic front view of a conventional apparatus.
FIG. 19 is a schematic side view of a conventional device.
[Explanation of symbols]
20 Combination weighing device
30 tank to be weighed
31, 32 bottom plate
35 outlet
43, 44 Air cylinder
56 regulatory bodies
58 Regulatory Block
62 Rotating lever
71 Straight feeder
73 Pool Hopper
83 Weighing hopper

Claims (2)

A plurality of weighing units that respectively weigh the objects to be weighed having adhesiveness, and a plurality of individual feeders that supply the objects to be weighed to the respective weighing units, and the weighing objects weighed by the plurality of weighing units. In the combination weighing device that discharges in combination based on the measurement result,
A weighing object tank formed in a bottomed shape to receive the weighing object from above and house it inside, and a plurality of discharge ports provided at the bottom for discharging the weighing object housed inside downward,
It has a shape that spreads downward and has a bottom surface with an outer shape slightly smaller than each of the discharge ports in the weighing object tank. extruding the objects to be weighed that remains Rutotomoni near exhaust port narrows the flow path of the objects to be weighed to the exhaust port is lowered to the discharge port side at the bottom, rise to the articles to the discharge port A plurality of regulators that agitate the object to be weighed in the object to be weighed while expanding the flow path of the object,
A sensor for detecting an object to be weighed of each of the individual feeders,
Wherein is configured to be able to lift each regulating body, at least the regulatory bodies corresponding to the individual supply of the objects to be weighed is low is detected elevation driving to the sensor, the individual supplier to the objects to be weighed And a driving device for stirring the object to be weighed in the vicinity of the corresponding discharge port in the object to be weighed tank . The bottom plate of the object tank is inclined toward the discharge port,
When the regulating body is raised, the auxiliary body that moves along the bottom plate that is inclined toward the discharge port corresponding to the regulating body and assists the outflow of the object to be weighed in the vicinity of the discharge port is provided at each discharge port. 2. The combination weighing device according to claim 1, wherein a plurality of the weighing object tanks are provided corresponding to the outlets.

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