JPH08219859A - Combined measuring device - Google Patents

Abstract

PURPOSE: To reduce the component cost and the maintenance cost of a combined measuring device by maintaining the device hygienic. CONSTITUTION: The conveying base 17 of a circular feeder 16, the conveying bases 21 of respective direct advance feeders 20, the hopper main bodies 26 and the discharge gates 27, 28 of respective intermediate hoppers 25, respective hopper main bodies 71 and discharge gates 75, 76 of respective measuring hoppers 70, a collection chute 100, the hopper main body 106 and the discharge gate 107 of a discharge hopper 105 are formed of synthetic resin containing antibacterial material. Thereby, a whole device can be made light in weight, the noise thereof can be reduced, the costs of respective components can be reduced, and these components are made to obtain sufficient cleaning effect at an ordinary temperature so as to reduce a cleaning cost.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a combination of objects to be weighed which are supplied to a plurality of hoppers and weighed respectively.
The present invention relates to a combination weighing device that selects a combination that is close to a target amount and discharges the selected objects to be weighed from a hopper to collect them.

[0002]

2. Description of the Related Art Conventionally, a combination weighing device has been used in order to efficiently combine foods having different weights (for example, vegetables, sweets, pickles, etc.) into target amounts.

In general, this type of combination weighing device supplies an appropriate amount of the object to be measured to a plurality of hoppers by a plurality of vibrating feeders which vibrate a carrier to convey the object to be measured. Then, the objects to be weighed, which are selected as a combination based on the weight value, are discharged from the hopper, and are collectively discharged from the collecting chute arranged below the hopper.

In such a combination weighing device, parts such as a carrier of the supply device, a hopper, a collecting chute, etc., which come into contact with the object to be weighed, are formed by processing a stainless steel plate, and these parts are arranged to facilitate cleaning. The parts are configured to be detachable from the main body of the device. Then, when changing the type of the object to be weighed, the carrier, hopper, collecting chute, etc. are removed from the main body of the apparatus, washed, and then sterilized by boiling.
It is attached to the device.

[0005]

However, such a conventional combination weighing device has the following problems.

(1) Since most of the parts that come into contact with the objects to be weighed, such as the feeding device, the hopper, and the collecting chute, are made of heavy stainless steel, a combination weighing device that uses many hoppers to increase the accuracy of the combination However, the weight of the entire device is significantly increased.

(2) Since the weight of the carrier table and the gate of the hopper are large, the mechanism for driving the vibration or opening / closing of the gate is large, the driving energy is large, and the noise during driving is large.

(3) Since the stainless steel plate itself is expensive and is bent or welded to form the carrier table, the hopper and the collecting chute, the cost of the entire apparatus cannot be reduced. . In particular, when unevenness is provided on the contact surface with the object to be weighed so as not to adhere the object to be weighed, the processing cost thereof becomes extremely high.

(4) Bacteria propagate only by washing at room temperature, so boiling sterilization is required, and washing costs are high.

For this reason, it is conceivable that these constituent parts are made of synthetic resin, but the synthetic resin is liable to be scratched on the surface, and various bacteria propagated on the scratch are completely disinfected by washing at room temperature. In addition, since the synthetic resin is easily deformed by high heat, it cannot be sterilized by boiling, which causes a serious problem in hygiene.

An object of the present invention is to solve the above-mentioned problems and to provide a combination weighing device which achieves both cost and hygiene.

[0012]

In order to achieve the above-mentioned object, the combination weighing device of the present invention comprises at least one feeding device of the combination weighing device, a plurality of hoppers, or at least one contacting object to be weighed in the collecting device. The parts are made of synthetic resin containing antibacterial material.

[0013]

As described above, in the combination weighing device of the present invention, at least one of the parts constituting the feeding device, the hopper or the collecting device, which comes into contact with the object to be weighed, is made of the synthetic resin containing the antibacterial material. Since it is formed, it is possible to reduce the weight of the entire device, downsize the driving unit, significantly reduce the cost, and reduce the noise during driving. Further, even if various bacteria enter the scratches on the surface, the antibacterial action of the antibacterial material prevents the propagation of the various bacteria, and the cleaning can be sufficiently disinfected even at room temperature, and the cleaning cost is significantly reduced.

[0014]

[First Embodiment] A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the overall configuration of a combination weighing device 10 of the first embodiment. The combination weighing device 10 has a structure in which a plurality of linear feeders, an intermediate hopper, and a weighing hopper are annularly arranged along the circumferential direction of a prismatic casing, and in FIG. 1, they are annularly arranged. Only some of a plurality of linear feeders, intermediate hoppers, and weighing hoppers are shown.

In FIG. 1, the base 11 of the combination weighing device 10 has a substantially square outer shape and is supported by legs 12 attached to the four corners of the lower surface.

An inverted conical support hole 13 for supporting a collecting chute 100, which will be described later, is provided in the center of the base 11, and an inner wall surface of the support hole 13 supports four casings. The body 14 is mounted so as to project upward.

A prismatic casing 15 having, for example, 12 side surfaces is arranged above the support hole 13 with the lower surface 15a side thereof being supported by the casing support 14.

A circular feeder 16 is arranged at the center of the upper surface 15b of the housing 15, and a plurality of (for example, 12
The straight feeders 20 are arranged radially. The circular feeder 16 is composed of a circular umbrella-shaped carrier 17 and a vibration drive device 18, and a drive shaft 18 a of the vibration drive device 18 is provided.
The conveyor 17 supported on the upper end of the conveyor is reciprocally rotated and vertically vibrated to disperse the objects to be weighed, which are dropped and supplied from above by the article conveyor (not shown) to the top of the conveyor 17 to the peripheral portion thereof. Let

The carriage 17 which is a part of the circular feeder 16 that comes into contact with the object to be weighed is integrally molded in a circular umbrella shape with a synthetic resin such as polypropylene in which an antibacterial material such as silver zeolite is mixed, as shown in FIG. As shown, the hexagonal tip of the drive shaft 18 is received by a bearing 17a provided in the center of the lower surface, and a set screw 17b is screwed onto the drive shaft 18a from the top side of the carrier table 17. , Drive shaft 18
It is connected to a. Therefore, this set screw 17b
The carrier table 17 can be removed from the vibration driving device 18 by loosening.

Each straight feeder 20 has a gutter-shaped carrier table 21.
And a vibration driving device 22, and the transfer table 21 receives the objects to be weighed out from the transfer table 17 of the circular feeder 16, and the transfer table 21 is vibrated along the outer peripheral direction of the case 15 to form the case. The object to be weighed is conveyed straight to the upper side of each side surface of 15.

The carriage 21 which is a part of each linear feeder 20 that comes into contact with the object to be weighed is the carriage 1 of the circular feeder 16.
Similar to 7, it is integrally molded of a synthetic resin such as polypropylene in which an antibacterial material such as silver zeolite is kneaded, and as shown in FIG.
1b and 21c are provided, and the vibration table 2 of the vibration drive device 22 is provided.
The hook 21b is locked to the rear part of 2a, and the hook 21c is locked to the locking tool (patchon lock) 22b attached to the front part of the vibrating table 22a, and is fixed to the vibration drive device 22 at the top. . Therefore, the carrier 21 can be easily removed from the vibration drive device 22 by unlocking the locking tool 22b.

As described above, since the carriages 17 and 21 of the circular feeder 16 and the plurality of linear feeders 20 are integrally formed of synthetic resin such as polypropylene in which an antibacterial material such as silver zeolite is mixed, they are made of stainless steel. It can be configured to be lighter in weight than the carrier table, requires less electric power for vibration driving, and can reduce the size of the vibration driving device.

Further, even if the surface is scratched, the effect of the antibacterial material prevents the growth of various bacteria, so that a sufficient cleaning effect can be obtained only by washing with water.

The upper portion of each side surface 15c of the housing 15 is shown in FIG.
As shown in FIG.
An intermediate hopper 25 is arranged to receive the objects to be weighed out from each and to discharge the objects.

As shown in FIGS. 4 and 5, the intermediate hopper 25 is a hopper having a double-opening structure in which the lower opening surface of a rectangular tube-shaped hopper body 26 that is open at the top and bottom is opened and closed by two discharge gates 27 and 28. The hopper main body 26 and the discharge gates 27 and 28, which are parts that come into contact with the object to be weighed discharged from the straight-line feeder 20, are integrally molded of a synthetic resin such as polypropylene in which an antibacterial material such as silver zeolite is mixed. There is.

The inner wall surface of the hopper body 26 is formed in a corrugated shape in order to prevent the sticky object to be weighed. In addition, the hopper body 26 whose lower portion is formed into an inverted triangle
A rotary shaft 29 is provided on both sides of the front surface 26a and on the both sides of the back surface 26b of each of the two discharge gates 27, 28.
Rotates with both sides supported by the rotating shaft 29 to open and close the inclined lower opening surface of the hopper body 26. The inner wall surfaces of the discharge gates 27 and 28 are also formed in a corrugated shape so that adhesive objects to be weighed do not remain.

At the central portion of the back surface 26b of the hopper body 26, two rectangular locking pieces 30 and 31 are vertically provided so as to face each other. Locking pins 32 and 33 are provided on the upper and lower portions on the tip side of the locking pieces 30 and 31 so as to project outward.

A mechanism support plate 35 is fixed between the two locking pieces 30 and 31. The mechanism support plate 35 prevents the opening and closing of the two discharge gates 27 and 28 from the fixing portion 35a fixed to the back surface 26b of the hopper body 26 by screwing between the locking pieces 30 and 31, and the lower portion of the fixing portion 35a. So as not to exist, it has support portions 36b and 36c which are formed one step higher than the fixed portion 35a and extend to the left and right, and lever shafts 37 and 38 are projected at the tips of the support portions 36b and 36c.

On the lever shafts 37 and 38, pivot levers 40 and 41, which are formed in a dogleg shape, are rotatably supported so that the intermediate portions thereof are symmetrical to each other.

Rollers 42 and 43 are attached to the lower ends of both rotating levers 40 and 41. The lower ends of link plates 44 and 45 are rotatably connected to the upper ends of both rotating levers 40 and 41. The upper ends of the link plates 44 and 45 are rotatably connected to the upper ends of the side portions of the discharge gates 27 and 28, and the intermediate portions of the link plates 44 and 45 are attached by springs 48 in a direction to attract each other. It is energized. When the discharge gates 27 and 28 are closed, the intermediate portions of the link plates 44 and 45 come into contact with the locking pieces 30 and 31, and at this time, the link plates 44 and 45 and the rotation levers 40 and 41 are in contact with each other. The dimensions of each part are set so that the upper part and the upper part are aligned.

Therefore, for example, when the roller of one turning lever is pushed upward, the upper part of the turning lever is
Since it moves downward to the outside, the link plate connected to this rotating lever is pulled downward, and the discharge gate connected to this link plate opens. In addition,
Since the mechanism support plate 35, the rotation levers 40 and 41, and the link plates 44 and 45 supported by the mechanism support plate 35 do not normally contact the object to be weighed, either synthetic resin containing antibacterial material or metal is used. However, if these parts are also made of a synthetic resin containing an antibacterial material, the entire hopper except the spring 48 can be washed at room temperature at once. When these parts are made of metal, the mechanism support plate 35 may be removed from the hopper body 26 and the hopper body 26 and the discharge gates 27 and 28 may be washed at room temperature.

The intermediate hopper 25 thus formed is
It is detachably locked to the upper part of the side surface of the housing 15.

That is, as shown in FIG. 6, a U-shaped locking plate 50 is attached to the upper portion of the side surface 15c of the housing 15. The gap size between the facing pieces 51 and 52 of the locking plate 50 is formed to be slightly wider than the distance between the outer surfaces of the locking pieces 30 and 31 of the intermediate hopper 25, and at the upper part thereof,
Grooves 53 and 54 for receiving the upper locking pins 32 of the locking pieces 30 and 31 are formed, and the locking pieces 30 and 54 are formed in the lower part.
Stepped portions 55 and 56 that contact the locking pin 33 on the lower side of 31 are formed.

In the intermediate hopper 25, the upper locking pins 32 of the locking pieces 30, 31 are inserted into the upper grooves 53, 54 of the locking plate 50, and the lower locking pins 33 are stepped on the locking plate 50. Parts 55, 5
It is supported by the housing 15 so as to be in contact with the housing 6. A drive lever 57, which is rotationally driven by a drive device (a motor, an air cylinder, or the like) in the housing 15, is attached below the locking plate 50, and the intermediate hopper 25 is rotated by the rotation of the drive lever 57. The rotary levers 40 and 41 are selectively driven, and the discharge gates 27 and 28 are selectively opened and closed.

Below the drive lever 57, a locking plate 58 for supporting a weighing hopper 70 described later,
Drive levers 65 and 66 for opening and closing the weighing hopper 70
Is protruding. The locking plate 58 projects to the side surface of the housing 15 in a state of being connected to a weighing device (not shown) fixed in the housing, and, just like the locking plate 50, the facing plate 5 thereof.
Grooves 61 and 62 are provided in the upper portion of 9, 60, and step portions 63 and 64 are provided in the lower portion.

The objects to be weighed discharged from each of the intermediate hoppers 25 are accommodated and weighed in a weighing hopper 70 arranged below them.

In the weighing hopper 70, as shown in FIGS. 7 and 8, the inside of the hopper body 71 is divided into left and right accommodating portions 73 and 74 by a partition 72 that is erected at the center. Except for this, the intermediate hopper 25 is configured almost the same.

That is, the weighing hopper 70 is a hopper having a double-opening structure in which the lower opening surfaces of the accommodating portions 73 and 74 of the rectangular tube-shaped hopper body 71 that is open at the top and bottom are independently opened and closed by the two discharge gates 75 and 76. And the hopper body 71 and the discharge gates 75 and 76 as parts that come into contact with the object to be weighed are
They are integrally molded with synthetic resin such as polypropylene mixed with antibacterial material such as silver zeolite.

The inner wall surface of the hopper body 71 is formed in a corrugated shape in order to prevent the sticky object to be weighed. In addition, a hopper body 71 whose lower portion is formed in an inverted triangle
Rotating shafts 77 are provided on both sides of the front surface 71a and on the both sides of the back surface 71b of each of the two discharge gates 75 and 76, respectively.
Rotates with both sides supported by the rotating shaft 77 to open and close the lower opening surfaces of the accommodating portions 73 and 74. The inner wall surfaces of the discharge gates 75 and 76 are also formed in a corrugated shape so that sticky objects to be weighed do not remain.

At the central portion of the back surface 71b of the hopper body 71, two rectangular locking pieces 80, 81 are vertically provided so as to face each other. Locking pins 82 and 83 are provided on the upper and lower portions of the locking pieces 80 and 81 on the front end side so as to project outward.

A mechanism support plate 85 is fixed between the two locking pieces 80, 81. The mechanism support plate 85 prevents the opening and closing of the two discharge gates 75 and 76 from the fixed portion 85a which is fixed to the back surface 71b of the hopper body 71 by screwing between the locking pieces 80 and 81 and the lower portion of the fixed portion 85a. In order not to have it, it has supporting portions 85b and 85c which are formed one step higher than the fixed portion 85a and extend to the left and right, and lever shafts 87 and 88 are provided at the tips of the supporting portions 85b and 85c so as to project.

On the lever shafts 87 and 89, pivot levers 90 and 91 formed in a dogleg shape are rotatably supported in an intermediate direction.

Rollers 92 and 93 are attached to the lower ends of both rotating levers 90 and 91. Further, the lower ends of the link plates 94 and 95 are rotatably connected to the upper ends of the rotating levers 90 and 91. The upper ends of the link plates 94 and 95 are rotatably connected to the upper ends of the side portions of the discharge gates 75 and 76, and the intermediate portions of the link plates 94 and 95 are attached by springs 98 in the directions to attract each other. It is energized.

In the weighing hopper 70, the locking pin 82 on the upper side of the locking pieces 80, 81 is connected to the groove 6 on the upper side of the locking plate 58 of the housing 15.
It is supported by the locking plate 58 such that the locking pin 83 on the lower side is abutted on the stepped portions 63 and 64 of the locking plate 58 after being put in the first and the second 62. At this time, when the discharge gate 27 is opened, the object to be weighed in the intermediate hopper 25 is stored in the accommodating portion 73 of the weighing hopper 70.
The discharge gates 27, 2 of the intermediate hopper 25 are discharged so that the objects to be weighed in the intermediate hopper 25 are discharged into the accommodating portion 74 of the weighing hopper 70 when the discharge gate 28 is opened.
8 is located directly above the partition 72 of the weighing hopper 70, and the rollers 92 and 93 of the rotating levers 90 and 91 of the weighing hopper 70 are located above the drive levers 65 and 66, respectively.

Weighing hopper 70 supported by each locking plate 58
The weight of the object to be weighed stored in is detected by each weighing unit by the weighing device connected to each locking plate 58, and the combination of the detected weights is selected. Drive lever 65, 66
Among the above, when the drive lever corresponding to the housing portion that houses the objects to be weighed selected for the combination rotates, the discharge gate corresponding to the housing portion is opened and closed, and the objects to be weighed selected for the combination are Will be discharged. The intermediate hopper 2
5, the mechanism support plate 85, the rotating levers 90 and 91, and the link plates 94 and 95 of the weighing hopper 70 do not come into direct contact with the object to be weighed. When cleaning the weighing hopper, it is sufficient to select whether to clean the entire hopper or only the hopper body and the gate at room temperature when cleaning the weighing hopper.

As described above, the hopper bodies 26, 71 and the discharge gates 27, 28, 75, 76, which are parts that come into contact with the objects to be weighed of the intermediate hoppers 25 and the weighing hoppers 70, respectively.
Since it is integrally molded with a synthetic resin such as polypropylene mixed with antibacterial material such as silver zeolite, it can be made significantly lighter than a stainless steel hopper body or a hopper with a gate, and noise when opening and closing the gate Also, the load on the measuring instrument is small and a small measuring instrument can be used. Further, even if the surface is scratched, the effect of the antibacterial material prevents the growth of various bacteria, so that a sufficient cleaning effect can be obtained only by cleaning at room temperature.

The objects to be weighed discharged from the respective weighing hoppers 70 are received by the collecting chute 100 attached to the support holes 13 of the base 11 and discharged from the lower discharge port of the base 11.

As shown in FIG. 9, the collecting chute 100 is formed into a funnel shape by four chute plates 101 which are divided so as to be inserted into the support holes 13 while avoiding the supports 14 standing upright in the support holes 13. Is formed in.

Each chute plate 101 has the above-mentioned intermediate hopper 2
5. Like the weighing hopper 70, it is integrally formed of a synthetic resin such as polypropylene in which an antibacterial material such as silver zeolite is mixed. For this reason, it becomes much more weighing than the conventional chute plate made of stainless steel, and it is easy to remove and install a chute plate that is very large as a component of the device.
Further, like the carrier table and the hopper, since the growth of various bacteria is prevented by the action of the antibacterial material, sufficient cleaning effect can be obtained only by cleaning at room temperature.

On the other hand, a discharge hopper 105 is detachably supported by the discharge hopper support 103 on the lower surface side of the base 11. The objects to be weighed discharged from the collecting chute 100 are accommodated in the discharge hopper 105 and then discharged to the packaging machine (or the packaging line or the like).

As shown in FIG. 10, the discharge hopper 105 is a one-sided open type consisting of a rectangular tube-shaped hopper body 106 and a discharge gate 107. The hopper body 106 and the discharge gate 107 are made of an antibacterial material such as silver zeolite. Are formed integrally with each other by a synthetic resin such as polypropylene in which is kneaded, and the inner wall surfaces of the hopper main body 106 and the discharge gate 107 are formed in a corrugated shape so that an adhesive object to be weighed does not remain. Therefore, this discharge hopper 105 is
The intermediate hopper 25 and the weighing hopper 70 are larger than the intermediate hopper 25 and the weighing hopper 70 in order to accommodate the objects to be weighed discharged from the plurality of weighing hoppers 70. However, since the hopper body 106 and the discharge gate 107 are made of synthetic resin, they are made of conventional stainless steel. Compared to other hoppers, it can be easily attached and detached,
Further, as described above, the cleaning can be easily completed by the action of the antibacterial material.

Locking pieces 108 protruding outward are provided on both side surfaces of the hopper body 106. A locking hole 109 is provided in the locking piece 108. Discharge hopper 105
Inserts both locking pieces 108 into the support groove 103a of the discharge hopper support 103, and a locking pin (not shown) biased to advance into the support groove 103a has a locking hole 10a.
In the state of being locked to 9, the object to be weighed discharged from the collecting chute 100 is fixed to a position for receiving it inside. The locking by the locking pin can be released by strongly pulling out the discharge hopper 105.

Rotation shafts 110 are provided on the front and back surfaces of the hopper body 106, and the discharge gate 107 is rotatably supported at its side by the rotation shaft 110 to open and close the lower opening surface of the hopper body 106. .

The shafts 111 and 11 are provided on the intermediate portion of the side of the discharge gate 107 and the front surface of the hopper body 106, respectively.
2 is provided in a protruding manner, and a spring 113 is hooked between the shafts 111 and 112. Therefore, the discharge gate 107 is always biased in the direction of closing the lower opening surface of the hopper body 106.

As shown in FIG. 1, the drive arm 1 of the opening / closing drive device 115 is attached to the shaft 112 on the discharge gate 10 side.
The leading end of 16 is locked. The opening / closing drive device 115 fixed to the lower surface of the base 11 rotatably supports the other end of the drive arm 116 at the edge of the rotary plate 117 so that the rotary plate 1 can rotate.
By driving 17 to rotate, the drive arm 116 is reciprocated in a substantially horizontal direction, and the discharge gate 107 of the discharge hopper 105 is opened and closed to discharge the objects to be weighed inside to a packaging machine or packaging line (not shown).

As described above, in the combination weighing device 10, the conveyors 17 and 21 of the circular feeder 16 and the linear feeder 20, the intermediate hopper 25, the weighing hopper 70, the hopper body of the discharge hopper 105, the discharge gate, and the collecting chute. Since 100 is made of synthetic resin containing antibacterial material, the entire device can be remarkably reduced in weight, its drive unit can be downsized, and processing for preventing adhesion of an adherent object to be weighed is required. Can be made inexpensive, and the cost of the entire device can be significantly reduced. Also, since the main body of each hopper and the discharge gate are made of synthetic resin, noise during opening and closing operations can be reduced, and even if bacteria enter the scratches on the surface, the antibacterial action of the antibacterial material prevents the propagation of the bacteria. Even if it is washed at room temperature, it can be sterilized sufficiently, and the cleaning cost is significantly reduced.

[0057]

[Second Embodiment] In the first embodiment, the present invention is applied to a combination weighing device in which a plurality of feeding devices and hoppers are annularly arranged along the outer periphery of a prismatic casing. The invention is
Not only the combination weighing device having such a structure, but also a combination weighing device in which a plurality of feeding devices and hoppers are arranged in a line can be similarly applied.

11 to 16 are views showing the external appearance and the main parts of the combination weighing device 120 of the second embodiment in which the present invention is applied to the combination weighing device in which a plurality of feeding devices and hoppers are arranged in a horizontal row. is there. The second embodiment will be described below with reference to these drawings.

This combination weighing device 120 is used for weighing an object to be weighed having a particularly strong adhesiveness, and its base 1
A case 122 having a substantially rectangular parallelepiped shape is supported on 21. An electromagnetic vibrating device 123 is provided on the top of the housing 122.
A plurality of (10 in this example) are arranged side by side in a row in the width direction of the housing 122, and the vibrating shaft 123 a of each vibrating device 123 is arranged.
Protrudes from the upper surface 122a of the housing 122.

At the upper end of each vibrating shaft 123a, a trough-shaped carrier table 124 is attached so as to face the front of the housing 122. Each carrier 124 is integrally formed of a synthetic resin in which an antibacterial material such as silver zeolite is kneaded, and is mounted on the vibration device 123 by a locking mechanism (not shown) similar to that of the first embodiment. It is detachably supported. An object to be weighed is supplied to each of the conveyors 124 by a chute (not shown), a bucket conveyor, or manual insertion.

Each of the vibrating devices 123 vibrates each carrier table 124 back and forth toward the front side of the casing 22 by energizing for a predetermined time, and vibrates and conveys the object to be weighed on the carrier table 124 to the front end side. Then, the objects to be weighed are supplied to the empty pool hoppers 125 arranged below the front ends of the respective conveyors 124.

The pool hopper 125 is made of a synthetic resin in which an antibacterial material such as silver zeolite is kneaded, and is formed in a hollow rectangular tube shape whose upper and lower sides are opened in a substantially quadrangular shape. As shown in FIG. The flange portion 126 is formed in a corrugated shape in order to prevent the weighing object from remaining, and a flange portion 126 is provided at the front and rear edges of the lower opening surface that is slightly smaller than the upper opening surface.
6 has two locking holes 127.

Each pool hopper 125 is supported by a frame 128 attached to the left and right of the front surface 122b of the housing 122. That is, inside the front plate 128a of each frame 128, five pin fixing plates 129 are attached at predetermined intervals, and each pin fixing plate 129 has a pool hopper 12
Two locking pins 131 are provided upright at the same intervals as the locking holes 127 of No. 5. In addition, the front plate 128a of the frame 128
And a front surface 122b of the housing 122, a pair of guide shafts 132 are installed in parallel on both sides of the pair of locking pins 131, and the bottom plate 1 is provided on each pair of guide shafts 132.
33 are respectively supported. Each bottom plate 133 engages with one guide shaft 132 on the rear surface side thereof and is supported in a state of being slidable in the front-rear direction.

Each pool hopper 125 has a bottom plate 133 with the locking holes 127 being locked by the pair of locking pins 131.
It is supported so as to be placed on it.

Similar to the pool hopper 125, each bottom plate 133 is made of a synthetic resin such as polypropylene in which an antibacterial material such as silver zeolite is mixed, and is formed into a substantially rectangular shape having a size to close the lower opening surface of the pool hopper 125. The rear side of one of the side portions is detachably connected to the tip of a cylinder shaft 134a protruding from the front surface 122b of the housing 122. Each cylinder 134 provided in the housing 122 draws the bottom plate 133 until its front end is below the rear flange of the pool hopper, and scrapes off the objects to be weighed on the bottom plate with the inner wall of the hopper. Open the lower opening surface of each pool hopper, discharge the objects to be weighed in the hopper, and push out the bottom plate 133 until the front end of the bottom plate 133 comes under the front flange of the pool hopper. The lower opening surface is closed, and the objects to be weighed out from the upper transfer table 124 are stored in the pool hopper.

Below each pool hopper 125, a weighing hopper 135 having the same shape as the pool hopper 125 (a synthetic resin containing an antibacterial material such as silver zeolite) and having the same shape is arranged.

Each weighing hopper 135 is equivalent to the pool hopper 12
5 is supported so that the front and rear directions are opposite to each other.
As shown in FIG. 5, the two locking holes 137 provided in the one flange portion 136 are supported by the respective hopper supports 140 supported by the front surface 122 b of the housing 122.

Two locking pins 141 are projected on the upper surface of the hopper support 140, and both ends of the hopper support 140 are parallel to each other at a distance slightly wider than the distance between the locking pins 141 toward the front. A pair of extending guide shafts 142 are attached, and bottom plates 143, which are guided by the pair of guide shafts 142 and are slidable in the front-rear direction, are supported on the guide shafts 142. Each weighing hopper 135 is supported so as to be placed on the bottom plate 143 with the locking holes 137 being locked by the pair of locking pins 141.

Each of the bottom plates 143 is made of synthetic resin such as polypropylene in which an antibacterial material such as silver zeolite is mixed, just like the bottom plate 133 of the pool hopper 125.
It is formed in a rectangular shape having a size that closes the lower opening surface of 35, and the rear portion side of one side portion thereof is detachably connected to the tip of a cylinder shaft 144 a protruding from the front surface of the housing 122. Each cylinder 144 provided in the housing 122 pushes out each cylinder shaft 144a, moves each bottom plate 143 forward, and opens the lower opening surface of each weighing hopper 135.
Each of the cylinder shafts 144a is pulled in, each of the bottom plates 143 is moved to the housing side, and the lower opening surface of each of the weighing hoppers 135 is closed.

Each hopper support 140 is locked to a disc-shaped connecting plate 145 arranged on the front surface of the housing 122 by a locking mechanism 146.
Are detachably connected to each other. Each connecting plate 145 is supported by each load cell 147 fixed in the housing, and each cylinder 144 is also connected to the connecting plate 145.
The cylinder shaft 144a is fixed to the front side of the housing 122 so as to pass through the connecting plate 145.

Therefore, each load cell 147 has a weighing hopper 135, a hopper support 140, and a guide shaft 14.
2, the load of the bottom plate 143, the cylinder 144, the connecting plate 145, and the locking mechanism 146 is constantly applied, and the load of the object to be measured is added to this steady load. The weight of the object to be weighed accommodated in each weighing hopper 135 is detected from the output of each load cell 147, and a combination close to the target amount is selected from the combination of the weights, and the selected object to be weighed is accommodated. The bottom plate 143 of the weighing hopper 135 being opened is opened, and the objects to be weighed selected for the combination are discharged.

The objects to be weighed discharged from the respective weighing hoppers 135 are stored in the timing hoppers 150 arranged below them.

Each timing hopper 150 is made of an antibacterial synthetic resin and is formed in the same shape as the pool hopper 125.
It is supported on the front side of the housing 122 in the same direction as the pool hopper 125. That is, as shown in FIG. 14, the two locking holes 152 provided in the one flange 151 at the lower end of each timing hopper 150 are provided on the front surface 12 of the housing 122.
2b, the front plate 153a of the frame 153 fixed to the left and right sides of the frame 153 is locked by the locking pin 156 protruding from the pin fixing plate 154 at the inner edge of the front plate 153a. It is mounted on a bottom plate 159 which is supported on a pair of guide shafts 158 installed in parallel and slides back and forth.

Each bottom plate 159 has a timing hopper 150.
It is formed in a rectangular shape having a size that closes the lower opening surface, and the rear side of one side portion is detachably connected to the tip of a cylinder shaft 160a protruding from the front surface of the housing 122.
Each cylinder 160 in the housing 122 has a cylinder shaft 16
0a is pulled in, each bottom plate 159 is moved to the housing 122 side, and the lower opening surface of each timing hopper 150 is opened.
Each cylinder shaft 160a is pushed out, each bottom plate 159 is moved forward, and the lower opening surface of each timing hopper 150 is closed. The bottom plate 159 is also made of a synthetic resin containing an antibacterial material such as silver zeolite.

Thus, the pool hoppers 1 arranged one above the other
Since the weight 25, the weighing hopper 135, the timing hopper 15 and their respective bottom plates are made of synthetic resin containing an antibacterial material to reduce their weight, they are supported at a position relatively distant from the housing 122 as in this embodiment. Even in such a case, it is not necessary to make the strength of the support member particularly strong, and the weight of the entire device can be reduced.

Below the plural (10 in this embodiment) timing hoppers 150, two conveyors 165, 1 are provided.
66 are arranged on the left and right. Two conveyors 165,
The conveyor belts 165a and 166a of 166 are made of synthetic resin containing an antibacterial material in an endless shape, and the left conveyor 165 receives the objects to be weighed discharged from the left five timing hoppers and conveys them to the right end. , Right conveyor 166
Receives the objects to be weighed discharged from the five timing hoppers on the right side and conveys them to the left end. Two conveyors 165, 1
66 is supported by the front surface 122b of the housing 122, and is driven by a motor 167 inside the housing. Two conveyors 16
A funnel-shaped collecting chute 17 is provided below the space between 5,166.
0 is supported.

The plurality of timing hoppers 150 are
Open / close control is performed at different timings. That is, the two timing hoppers at both ends are opened and closed immediately after the objects to be weighed selected for the combination are discharged from the plurality of weighing hoppers 135.
The second two timing hoppers from the outer side are opened and closed at the timing when the objects to be weighed discharged from the timing hoppers at both ends to the conveyors 165 and 166 have come down, and are placed on the objects to be weighed discharged from the timing hoppers at both ends. Try to overlap. Similarly, the inner timing hopper is opened and closed at a later timing, and the objects to be weighed on the conveyors 165 and 166 are discharged from the gap between the conveyors 165 and 166 to the collecting chute 170. The timing hopper may be opened and closed regardless of the presence or absence of the object to be weighed.
You may perform only about the thing in which the to-be-measured object is accommodated.

The collecting chute 170 includes two conveyors 1
65 and 166 form the collecting apparatus of this embodiment, the hopper is made of synthetic resin containing an antibacterial material such as silver zeolite as in the case of the hoppers, and as shown in FIG.
Square-shaped opening surface 1 of the minimum size necessary to receive the objects to be weighed out from the ends of the conveyors 165 and 166.
71 has an upper part and a discharge port 172 is provided in the lower part, and the inner wall surface has a steep slope so that the sticky object to be weighed received at the upper opening face 171 can be discharged from the discharge port 172 without remaining. And is formed in a wave shape.

The collecting chute 170 is the front surface 1 of the housing 122.
22b, a pair of support members 173 provided in parallel and projecting forward
It is supported so that it can be pulled out forward.

Between the left edge of the upper opening surface 171 of the collecting chute 170 and the lower surface of the right end of the conveyor 165, and between the right edge of the upper opening surface 171 and the lower surface of the left end of the conveyor 166, there is a long line. Plate-shaped return regulation plates 175, 176
Are arranged along the width direction of each conveyor.

The return regulating plates 175 and 176 are made of a synthetic resin containing an antibacterial material and are formed in a thin rectangular shape having a length substantially equal to the belt width of the conveyors 165 and 166, and their upper edges 175a and 176a are Conveyors 165, 166
A pair of rotating shafts 180, 1 whose lower edge portions 175b, 176b project in parallel forward from the front surface of the housing 22 in a state of being close to (almost in contact with) the belt on the lower surface side of the casing 22.
It is detachably attached to 81.

The rotating shafts 180, 181 rotate the return regulating plates 175, 176 by a predetermined angle toward the inner side of the collecting chute 170 by the motors 182, 183 provided in the housing 122, and then return to their original positions. Driven back to. The motors 182 and 183 have conveyors 165 and 166.
When the upper object to be weighed is discharged from the end on the collecting chute 170 side, the return regulating plates 175 and 176 are rotated toward the collecting chute 170 side to adhere to the conveyor and wrap around to the lower surface side. The object to be weighed is scraped into the collecting chute 170.

Also in the combination weighing device 120 of this embodiment, among the components of each of the feeding device, the hopper, and the collecting device, at least the part that comes into contact with the object to be weighed is formed of the synthetic resin containing the antibacterial material. The overall weight can be reduced, and these parts can be cleaned only at room temperature.

[0084]

Other Embodiments In the first embodiment, the hoppers are arranged in the upper and lower two stages, and in the second embodiment, the upper and lower three stages are arranged. However, the present invention is also applicable to the combination weighing device having only one hopper. Can be similarly applied.

In the first embodiment, the hopper bodies and discharge gates of the intermediate hopper, weighing hopper and discharge hopper are made of synthetic resin containing an antibacterial material. However, only the hopper body or the discharge gate is made antibacterial. It may be formed of a synthetic resin containing a material.

In the first and second embodiments, all the components of the combination weighing device that come into contact with the object to be weighed, that is, the carrier of the feeder, the hopper body of each hopper and its gate, and the collecting chute. Although the conveyor belt of the conveyor is made of synthetic resin containing antibacterial material, only some of these parts may be made of synthetic resin containing antibacterial material.

In the first and second embodiments, the carrier of the feeder, the main body of the hopper, the discharge gate (bottom plate), the collecting chute, etc. are formed of polypropylene in which silver zeolite is kneaded as an antibacterial material. However, other antibacterial substances such as copper ions and quaternary ammonium salts may be used, and the synthetic resin material is not limited to polypropylene and other materials can be used.

[0088]

As described above, in the combination weighing device of the present invention, at least one component which comes into contact with the objects to be weighed of the plurality of feeding devices, hoppers or collecting devices is formed of the synthetic resin containing the antibacterial material. The entire device can be remarkably reduced in weight, the drive unit can be downsized, the noise during driving can be reduced, and the cost can be significantly reduced. In addition, even if germs enter the scratches on the surface, the antibacterial action of the antibacterial material,
Propagation of the germs is prevented, a sufficient cleaning effect is obtained even at room temperature, the cleaning cost is significantly reduced, and both hygiene and cost can be achieved.

[Brief description of drawings]

FIG. 1 is a schematic side view of a first embodiment of the present invention.

FIG. 2 is a side view of the circular feeder according to the first embodiment.

FIG. 3 is a side view of the straight feeder of the first embodiment.

FIG. 4 is a perspective view of the intermediate hopper of the first embodiment.

FIG. 5 is a perspective view of the intermediate hopper of the first embodiment.

FIG. 6 is a perspective view of an essential part of the first embodiment.

FIG. 7 is a perspective view of the weighing hopper according to the first embodiment.

FIG. 8 is a perspective view of the weighing hopper according to the first embodiment.

FIG. 9 is a perspective view of the chute plate according to the first embodiment.

FIG. 10 is a perspective view of the discharge hopper of the first embodiment.

FIG. 11 is a perspective view of a second embodiment of the present invention.

FIG. 12 is a front view of the second embodiment.

FIG. 13 is a side view of the second embodiment.

FIG. 14 is a perspective view of a pool hopper and a timing hopper according to a second embodiment.

FIG. 15 is a perspective view of a weighing hopper according to a second embodiment.

FIG. 16 is a perspective view of a collecting chute of the second embodiment.

[Explanation of symbols]

 10 combination weighing device 15 housing 16 circular feeder 17 carrier stand 20 straight feeder 21 carrier stand 25 intermediate hopper 26 hopper body 27, 28 discharge gate 70 weighing hopper 71 hopper body 75, 76 discharge gate 100 collecting chute 101 chute plate 105 discharge hopper 106 hopper body 107 discharge gate

Claims (3)

[Claims] 1. A plurality of supply devices for feeding and supplying an object to be weighed, and a plurality of hoppers for respectively accommodating the objects to be weighed out from the supply device and selectively discharging the accommodated objects to be weighed. In the combination weighing device described above, at least one component that comes into contact with the objects to be weighed of the plurality of supply devices is formed of a synthetic resin containing an antibacterial material. 2. A plurality of supply devices for conveying and supplying an object to be weighed, and a plurality of hoppers for respectively accommodating the objects to be weighed out from the supply device and selectively discharging the accommodated objects to be weighed. In the above combination weighing device, at least one component that comes into contact with the objects to be weighed of the plurality of hoppers is formed of a synthetic resin containing an antibacterial material. 3. A plurality of supply devices for conveying and supplying an object to be weighed, a plurality of hoppers for respectively accommodating the objects to be weighed out from the supply device, and selectively discharging the accommodated objects to be weighed. In a combination weighing device having a collecting device that collects the objects discharged from a plurality of hoppers, at least one component that comes into contact with the objects of the collecting device is formed of a synthetic resin containing an antibacterial material. Combination weighing device characterized by.