JP3723192B2 - Combination weighing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a combination weighing device that selects a combination within a target weight range from a combination of objects to be weighed that are put into a plurality of hoppers, and collects and discharges the selected objects to be weighed. In particular, it is possible to perform maintenance work such as cleaning without removing the hopper into which the object to be weighed is completely removed from the main body of the equipment, shortening the maintenance work time, and placing the hopper when the hopper is removed. The present invention relates to a combination weighing device that can fundamentally solve the problem.
[0002]
[Prior art]
In general, the combination weighing device measures the objects to be weighed supplied from the article supply device by a weighing unit including a plurality of hoppers, and selects a combination in the target weight range from the combinations of the objects to be weighed. A plurality of hoppers storing the selected objects to be weighed are opened, and objects to be weighed from each hopper are collected by a chute or the like and discharged.
[0003]
A plurality of hoppers attached to the main body of the combination weighing device are usually detachable from the main body, and are removed from the main body after completion of the combination weighing work at an appropriate frequency for cleaning, etc. Maintenance work is performed. In particular, when the object to be weighed is food, from the viewpoint of hygiene, the hopper is removed from the apparatus main body and cleaned after completion of daily weighing work. For example, in the combination weighing device shown in Patent Literatures 1 to 3 below, a plurality of hoppers are detachably attached to the device main body of the combination weighing device, and the hopper is removed from the device main body for maintenance such as cleaning. It is configured to be able to.
[0004]
FIG. 10 shows a hopper attachment / detachment structure in the combination weighing device disclosed in Patent Document 1. As shown in the figure, a supply device 100 for conveying an object to be weighed is provided at the top of the device. Three types of hoppers, an intermediate hopper 101, a weighing hopper 102, and a memory hopper 103, are arranged in the vertical direction in the vertical direction below the tip of the supply device 100. On the back side of each hopper, a pair of side plates 104, 104 and two support bars 105, 105 provided between the pair of side plates 104, 104 are provided. A pair of claw portions 106 are attached to the apparatus main body 200, and each claw portion 106 is formed with two inclined concave portions 107, respectively. Each hopper has two support rods 105, 105 on the back side thereof inserted into and engaged with the respective concave portions 107 of the pair of claw portions 106, 106 on the apparatus main body 200 side, thereby engaging the apparatus. It is attached to the main body 200.
[0005]
Although not shown in the drawings, the hopper mounting / dismounting structure disclosed in Patent Document 2 also has a locking member on the back side of the hopper, and this is provided with a locking projection that protrudes forward on the apparatus main body side. The tool is detachably engaged with the tool. Further, in the hopper attachment / detachment structure disclosed in Patent Literature 3, if the weighing mechanism is substantially regarded as the apparatus main body, there is a locking member on the back side of the hopper, and this protrudes toward the weighing mechanism side. It is configured to detachably engage with a provided locking tool.
[0006]
[Patent Document 1]
No. 5-3950
[Patent Document 2]
Japanese Utility Model Publication No.59-54826
[Patent Document 3]
Japanese Utility Model Publication No. 1-227060
[0007]
[Problems to be solved by the invention]
However, in the conventional combination weighing device, the hopper can be attached to or detached from the device main body in a state where it can be completely used or removed completely. Therefore, during maintenance of the device, for example, when cleaning the hopper, the hopper is removed from the device body, and the removed hopper is temporarily placed on the floor, which is the installation surface of the device. I had to carry it.
[0008]
However, the combination weighing device has a stage on which an operator can put, and if it stands on this, the hopper can be attached and detached by approaching the hopper, but the combination weighing device is provided with a number of hoppers. Since the stage is also small, there is virtually no space for placing it on the floor of the stage during cleaning, and there is a problem that even if it is placed, it will interfere with the walking of workers. Further, when the object to be weighed is food, it is not preferable from the viewpoint of hygiene to place the hopper on the floor even if it is temporarily before cleaning.
[0009]
In addition, as described above, the hoppers to be cleaned are collectively transported to the cleaning place using a cart or the like, but in order to transport the hoppers to be cleaned to the cart, the bottom of the platform on which the combination weighing device is installed. It was necessary to carry out the troublesome and troublesome work of stopping the trolley, removing the hopper to be cleaned from the main body, and placing it on the trolley by reciprocating the stairs of the gantry.
[0010]
For this reason, even if the hopper is transported to the carriage, it takes time, the setup for cleaning is poor, and a series of cleaning operations require time and effort. Moreover, the hoppers that have been cleaned must be transported to the bottom of the gantry again with the carriage and attached to the main body of the equipment one by one by going back and forth through the stairs of the gantry. There was a problem that time was required and efficiency was poor.
[0011]
Therefore, the present invention has been made in view of the above problems, and is a combination weighing device capable of shortening a series of cleaning times including a hopper transport time and reducing labor and labor required for a cleaning operation. It is the first purpose to provide.
[0012]
Further, in the general combination weighing device, as shown in FIG. 10 as an example, there is no room between the plurality of hoppers 101, 102, and 103 that are vertically arranged on the device main body 200 side, and in particular, the supply unit. The space between 100 and the intermediate hopper 101 is narrow. Therefore, in the structure in which the support rod 105 protruding from the rear side of the hopper is engaged with the recess 107 of the claw 106 provided on the apparatus main body 200 side from above, the vicinity of the engagement position is the operator's eyes. There was a problem that it was difficult to reach the work and difficult to work. Further, with this structure, the hopper easily interferes with the apparatus main body when the hopper is attached / detached, which also has a problem in workability.
[0013]
Accordingly, the present invention has been made in view of the above problems, and a second object of the present invention is to provide a combination weighing device that can easily perform an operation of moving a hopper from a use position for maintenance such as cleaning. .
[0014]
[Means for Solving the Problems]
The combination weighing device according to claim 1 is configured to store a supply trough 3 for supplying an object to be weighed and a predetermined amount of the object to be weighed that is disposed below the supply trough 3 and supplied from the supply trough 3. And a weighing hopper 5 that is arranged below the stock hopper 4 and that measures the material to be weighed supplied from the stock hopper 4 and discharges it. The stock hopper 4 or the weighing hopper 5 is a combination weighing device 1 configured to be detachable from the device main body 1a.
An upper rear engagement protrusion 42B and a lower front engagement protrusion 42A provided to protrude from a pair of side surfaces of either the stock hopper 4 or the weighing hopper 5, respectively;
An upper rear engagement groove 44B and a lower front engagement groove 44A, respectively, and a pair of support members 43 provided in the apparatus main body 1a;
The upper and rear engagement protrusions 42B are engaged with the upper and rear engagement grooves 44B, and the lower front engagement protrusions 42A are engaged with the lower front engagement grooves 44A. Use position and
The upper and rear engagement protrusions 42B engage with the lower front engagement grooves 44A, and the lower front engagement protrusions 42A and the upper and rear engagement grooves 44B are not involved in the engagement. 5 maintenance work position
The detachable stock hopper 4 or the weighing hopper 5 is configured to be selectable as an attachment position with respect to the apparatus main body 1a.
[0015]
The combination weighing device 1 described in claim 2 is the combination weighing device 1 according to claim 1, wherein the support member 43 is inclined toward the lower front engagement groove 44A from the upper rear engagement groove 44B. A first guide portion 45 provided, and a second guide portion 49 provided curvedly in front of the lower front engagement groove 44A are formed,
When either one of the detachable stock hopper 4 or the weighing hopper 5 is moved along the support member 43 between the use position and the maintenance work position, the stock hopper 4 or The upper and rear engagement protrusions 42B of the weighing hopper 5 are guided by the first guide portion 45, and the lower front engagement protrusions 42A of the stock hopper 4 or the weighing hopper 5 are guided by the second guide portion 49. It is characterized by being configured.
[0016]
The combination weighing device 1 according to claim 3 is the combination weighing device 1 according to claim 2, wherein the stock hopper 4 has a plurality of storage portions 32 for storing a predetermined amount of the objects to be weighed in a horizontal row. It is characterized by being an integrated hopper arranged side by side.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS.
First, the overall configuration of the combination weighing device according to the present example will be described mainly with reference to FIGS. FIG. 1 is a side view showing the overall configuration of the combination weighing device according to the present invention, FIG. 2 is a plan view of the combination weighing device, and FIG. 3 is a side view of the combination weighing device, taken along line AA in FIG. FIG. 4 is a view showing an example of an installation state of the combination weighing device.
[0018]
As shown in FIGS. 1 to 3, the combination weighing device 1 is disposed below a tank 2, a supply trough 3 serving as a supply means for an object to be weighed disposed below the tank 2, and the supply trough 3. A stock hopper 4, a weighing hopper 5 disposed below the stock hopper 4, a memory hopper 6 disposed below the weighing hopper 5, and a collecting chute 7 disposed below the memory hopper 6. It is provided as a main component. Among these, the supply trough 3, the stock hopper 4, the weighing hopper 5, and the memory hopper 6 constitute a so-called channel 8 arranged in the vertical direction.
[0019]
The tank 2 has a rectangular tube shape in which substantially rectangular openings 2a and 2b communicate in the vertical direction. The opening 2b on the bottom side of the tank 2 is located on a rear end 3a of each supply trough 3 to be described later. As shown in FIG. 4, in the tank 2, an object to be weighed is input from an opening 2 a on the upper surface by a transport device 21 such as a transport conveyor or a transport bucket, and stores the object to be weighed.
[0020]
The supply trough 3 vibrates and sends an object to be weighed (not shown) downstream (left and right sides in FIG. 1), and is arranged so that the upstream rear end portion 3a is back-to-back. As shown in FIG. 2, a pair of supply troughs 3 with the downstream end portion 3b facing outward are arranged in parallel in the vertical direction of the figure in a plurality of pairs (five pairs in the illustrated example). ing. That is, five supply troughs 3 arranged in a straight line are arranged back to back, and a total of ten supply troughs 3 are arranged. The number of supply troughs 3 arranged in parallel is not limited to this.
[0021]
The supply trough 3 has a rear end 3 a inserted into the tank 2 from the bottom of the tank 2. Therefore, when the supply trough 3 vibrates, the objects to be weighed in the tank 2 are directly conveyed from the tank 2 to the stock hopper 4 by the supply trough 3.
[0022]
The supply trough 3 forms an overlap portion 17 in which one of the rear end portions 3a inserted into the tank 2 and back to back is overlapped with the other. In addition, a pair of adjacent supply troughs 3 is formed with a gap for preventing the vibrating supply troughs 3 from interfering with each other, and this gap also serves as a side of one supply trough 3 for the other supply trough. It is closed by forming an overlap portion 18 that overlaps the side portion of the trough 3. Since the supply troughs 3 vibrate, it is necessary to dispose them with a predetermined gap. The object to be weighed may fall from this gap, but in this combination weighing device 1, the gap between the supply troughs 3 and 3 inserted in the tank 2 is covered by the overlap portions 17 and 18. The object to be weighed does not fall from the top.
[0023]
The supply trough 3 is inclined in the tank 2 with the rear end 3 a side facing upward. Therefore, the rear end portion 3a of the supply trough 3 is inclined upward, so that the rear end portion 3a of the supply trough 3 that vibrates in the tank 2 extends obliquely upward. So-called bridges in which the objects to be weighed are bridged across the opposing inner wall surfaces 2c, 2c are less likely to occur.
[0024]
Further, a protrusion 19 protruding into the tank 2 is provided upright at the overlap portion 17 at the rear end portion 3 a of the supply trough 3. By providing the projections 19 on the supply trough 3, the above-described bridge of the objects to be weighed in the tank 2 is less likely to occur.
[0025]
The stock hoppers 4 are arranged in a back-to-back manner and are disposed below the front end portions 3 b of the supply troughs 3, and store objects to be weighed supplied from the supply troughs 3. The stock hopper 4 includes an integrated hopper 31 as shown in FIG. 5, for example. Although this integrated hopper 31 will be described in detail later, its structure has storage portions 32 corresponding to the number of supply troughs 3, and the objects to be weighed supplied from the supply troughs 3 are placed on the bottom surfaces of the individual storage portions 32. It is possible to discharge from the discharge port 34 by opening and closing the provided shutter 33. The shutter 33 is driven to open and close by the driving means 51 provided in the apparatus main body 1a corresponding to each.
[0026]
The weighing hoppers 5 are back-to-back and are arranged below the discharge ports of the respective stock hoppers 4 (individual storage portions 32 of the integrated hopper 31), and weigh the objects to be weighed discharged from the stock hoppers 4. . The weighing hopper 5 has an opening 5a in the upper portion and a discharge port 5b in the lower portion, and the object to be weighed supplied from the stock hopper 4 can be discharged from the discharge port 5b by opening and closing a shutter 5c provided on the bottom surface of the housing portion. It is said. The shutters 5c are driven to open and close by the driving means 51 provided in the apparatus main body 1a correspondingly. In addition, the objects to be weighed supplied to the respective weighing hoppers 5 are respectively weighed by a weighing device (not shown).
[0027]
The memory hoppers 6 are back-to-back and are disposed below the discharge ports 5a of the respective weighing hoppers 5, and temporarily store the objects to be weighed discharged from the weighing hoppers 5. The memory hopper 6 is composed of an integrated hopper 31 as shown in FIG. The integrated hopper 31 in this case has the same number of accommodating portions 32 as the number of the weighing hoppers 5, and the objects to be weighed supplied from the weighing hoppers 5 are opened and closed by opening and closing shutters 33 provided on the bottom surfaces of the individual accommodating portions 32. It is possible to discharge from the discharge port 34. The shutter 33 is driven to open and close by the driving means 51 provided in the apparatus main body 1a corresponding to each. The objects to be weighed discharged from the memory hopper 6 are collected together by the collective chute 7.
[0028]
As shown in FIG. 4, the combination weighing device 1 configured as described above is installed on a gantry 22 supported by a pillar 22 a having a predetermined height. In a space portion below the gantry 22, a packaging machine 23 for packaging the weighed objects to be discharged from the collective chute 7 of the combination weighing device 1 is installed.
[0029]
In the combination weighing device 1, an object to be weighed is accommodated in the tank 2 from the transport device 21, and the object to be weighed accommodated in the tank 2 is supplied to each stock hopper 4 by each supply trough 3. Each stock hopper 4 stores a predetermined amount of objects to be weighed and discharges the objects to be weighed to a lower weighing hopper 5. Each supply trough 3 supplies a new object to be weighed to the stock hopper 4 when the object to be weighed below the stock hopper 4 is exhausted. Each weighing hopper 5 stores the objects to be weighed from the respective stock hoppers 4 and weighs these objects to be weighed by the weighing machines. Next, after weighing, each stock hopper 4 discharges the object to be weighed to the lower memory hopper 6.
[0030]
The measurement signal of each measuring instrument is input to a combination selection unit (not shown). The combination selection means stores the weight of the object to be weighed supplied to each weighing hopper 5 based on the weighing signal of each weighing instrument. When receiving the discharge request signal from the packaging machine 23, a combination within the target weight range is selected from the combinations of the weight values of the objects weighed by the weighing hoppers 5, and the objects to be weighed selected for the combination are selected. A selection signal corresponding to the weighing hopper 5 and / or the memory hopper 6 that stores the hopper is output to open the shutter of the weighing hopper 5 and / or the shutter of the memory hopper 6. As a result, the objects to be weighed combined so as to have a weight within the target weight range are collected by the collecting chute 7 and discharged to the packaging machine 23.
[0031]
There are a plurality of methods for selecting the objects to be weighed by the combination selection means. For this purpose, a combination is selected from the objects to be weighed stored in the weighing hopper 5, and only the selected objects to be weighed are temporarily stored in the memory hopper 6 and then discharged to the collecting chute 7. The weighing object weighed in step (b) is stored in the memory hopper 6 and a combination is selected from the weighing objects stored in the memory hopper 6, the weighing object in the weighing hopper 5 and the weighing object in the memory hopper 6 There is a method of selecting a combination from among the methods. In the present combination weighing device 1, any of the above methods may be adopted.
[0032]
Next, a more specific configuration of the integrated hopper 31 employed in the stock hopper 4 and the memory hopper 6 of the combination weighing device 1 of this example will be described with reference to FIGS. FIG. 5 is a perspective view showing an engagement relationship between the hopper and the support member in the combination weighing device, FIG. 6 is a schematic front view of the hopper, and FIG. 7 is a side view showing an engagement relationship between the hopper and the support member in a use state. 8 is a side view showing the engagement relationship between the hopper and the support member at an intermediate position between the use state and the maintenance state, and FIG. 9 is a side view showing the engagement relationship between the hopper and the support member in the maintenance state.
[0033]
Since the weighing hoppers 5 need to individually weigh the objects to be weighed, they are configured separately one by one as before. For this reason, the hopper excluding the weighing hopper 5, in this example, the stock hopper 4 and the memory hopper 6 are constituted by the integrated hopper 31.
[0034]
The integrated hopper 31 shown in FIG. 5 constitutes a rectangular tubular hopper body 31 a having a plurality of accommodating portions 32 by a front plate 35, a back plate 36, both side plates 37, and a plurality of partition plates 38. As shown in FIGS. 5 and 6, the front plate 35 and the back plate 36 are formed with a plurality of notches 35a and 36a reaching the bottom side at a predetermined interval L1 from the end portion. As shown in FIG. 5, the front plate 35 and the back plate 36 are disposed to face each other with a predetermined distance L2, and the short side between the front plate 35 and the back plate 36 is inclined at the upper end. Side plates 37, 37 having 37a are arranged to face each other. And each junction part of the front plate 35, the back plate 36, and the both side plates 37 is fixed by welding, for example, and a rectangular tubular hopper body 31a having openings on the upper surface side and the bottom surface side is formed.
[0035]
In the opening of the hopper body 31a, a plurality of partition plates 38 having an inclined surface 38a at the upper end portion are arranged between the side plates 37, 37 with a predetermined interval. Each partition plate 38 is disposed between the front plate 35 and the back plate 36 so that the tip portions of the adjacent inclined surfaces 38a are joined in a mountain shape, and the joined portion is located between the notches 35a and 36a. The joining portion between the front plate 35 and the back plate 36 is fixed by, for example, welding. As a result, a plurality of accommodating portions 32 (five in the illustrated example) having inclined surfaces whose upper end portions spread outward are formed in the opening of the hopper body 31a.
[0036]
A shutter 33 made of a flat plate is provided in a freely openable and closable manner at the opening on the bottom surface side of each accommodating portion 32 of the hopper body 31a. The shutter 33 is attached to the opening on the bottom surface side of each housing portion 32 via the attachment member 41. The shutter 33 is rotatable about an attachment shaft (rotation shaft) 41 a of the attachment member 41. The mounting member 41 is fixedly provided with an arm centered on the mounting shaft 41a, and a shutter roller (shutter opening / closing member) 41b as an engaging portion is provided at the tip of the arm. In order to rotate the shutter 33, a driving means (described later) provided on the apparatus main body side is engaged with the shutter roller (shutter opening / closing member) 41b as the engaging portion.
[0037]
Two support shafts 42 (42A, 42B) for detachably supporting the hopper main body 31a with respect to the apparatus main body 1a are provided on both side plates 37, 37 which are side surfaces of the integrated hopper 31. The first support shaft 42 </ b> A and the second support shaft 42 </ b> B are suspended from both side plates 37, 37 so as to be located diagonally across the rotation center of the shutter 33. More specifically, the first support shaft 42A is a lower front engagement protrusion located on the front side of the shutter 33 at the lower front side of the hopper body 31a (lower front of the apparatus) and outward from the side plates 37, 37. It extends and is suspended. The second support shaft 42 </ b> B is an upper rear engagement protrusion positioned on the rear end side of the shutter 33 in the upper rear side of the hopper body 31 a (upper and rear of the device), and extends outward from the side plates 37 and 37. It is suspended.
[0038]
A hopper support member 43 that supports the integrated hopper 31 protrudes forward from the apparatus main body 1a and is suspended. The hopper support member 43 includes a support piece 43a for supporting the integrated hopper 31, and a fixing piece 43b for fixing the support piece 43a to the apparatus main body 1a by a fixing means such as a screw. Two sets of support shafts 42 (first support shaft 42A and second support shaft 42B) of the integrated hopper 31 are engaged with the support piece 43a, and two sets of engagements for horizontally supporting the integrated hopper 31 are provided. Joint grooves 44 (44A, 44B) are formed. The first engagement groove 44A (lower front engagement groove) is formed in a key shape at the front side lower position (lower front of the apparatus) of the support piece 43a and opens upward. The second engagement groove 44B (upper / rear engagement groove) is formed at the upper end position on the back side of the support piece 43a (upper / rear side of the apparatus) and opens upward.
[0039]
Further, an inclined first guide portion 45 (guide edge) is formed at the edge portion of the support piece 43a between the first engagement groove 44A and the second engagement groove 44B. The first guide portion 45 of this example has an inclination angle of about 45 degrees, and the shape of the inclined edge is linear. The first guide portion 45 has a front lower end continuous with an obtuse angle to a vertical edge 46 connected to the first engagement groove 44A, and a rear upper end thereof is an arc-shaped curved portion 47. And smoothly continues to the second engagement groove 44B. Further, a second guide portion 49 (guide edge) curved through a horizontal edge portion 48 is formed at the front lower end edge of the support piece 43a that is in front of the first engagement groove 44A. The second guide portion 49 of the present example has a smooth shape in which a circular circumferential portion obtained by dividing a circle into four at a central angle of 90 degrees is directed downward and forward.
[0040]
In addition, although the hopper support member 43 of this example is comprised with two members, the support piece 43a and the fixed piece 43b, you may comprise with one member.
[0041]
As shown in FIGS. 7 to 9, the driving means 51 that opens and closes the shutter 33 of the integrated hopper 31 linearly moves the driving shaft (driving shaft) 52 back and forth by, for example, a linear motion mechanism linked to the motor. A U-shaped hook 53 as an engaging member is provided at the tip of the drive shaft. A shutter roller 41 b of the shutter 33 is engaged with the hook 53. In the driving means 51, the shutter 33 is closed with the driving shaft 52 fully extended. On the other hand, when the drive shaft 52 contracts by driving the motor, the shutter roller 41b engaged with the hook 53 of the drive shaft 52 is pulled toward the apparatus main body 1a. In conjunction with the movement of the shutter roller 41b, the shutter 33 is rotated by a predetermined angle about the attachment shaft 41a and opened. The apparatus main body is provided with the driving means for each housing portion of the integrated hopper 31 and is linked to each shutter.
[0042]
Next, the attaching / detaching operation of the integrated hopper 31 with respect to the apparatus main body will be described.
As shown in FIG. 7, the upper and rear second support shafts 42B are engaged with the upper and rear second engagement grooves 44B, and the lower front first support shafts 42A are engaged with the lower front first engagement grooves 44A. The combined state is the use position of the integrated hopper 31. This position is an attachment position for the integrated hopper 31 to be used for the purpose of weighing an object to be weighed in the combination weighing device 1.
[0043]
In this state, the integrated hopper 31 is engaged with the apparatus main body side with two shafts provided on both side surfaces thereof, and the hook 53 of the driving means 51 is engaged with the shutter roller 41b. Here, the lengths of the two perpendiculars dropped from the first support shaft 42A and the second support shaft 42B to the line of action of the drive shaft 52 are substantially the same. Therefore, when the driving unit 51 is operated to open and close the shutter 33, the moments acting on the first support shaft 42A and the second support shaft 42B by the operation of the driving unit 51 are equal in magnitude and opposite in direction. The hopper 31 does not swing and the position does not change. Therefore, the shutter 33 can be opened and closed smoothly.
[0044]
As shown in FIG. 9, the upper and rear second support shafts 42B are engaged with the lower front first engagement grooves 44A, and the lower front first support shafts 42A and the upper rear rear engagement grooves. 44B is a maintenance work position of the integrated hopper 31 where 44B is not involved in the engagement between the integrated hopper 31 and the hopper support member 43. In this position, the integrated hopper 31 is suspended from the combination weighing device 1 so as to be swingable by only one shaft and groove (the second support shaft 42B and the first engagement groove 44A). The hook 53 of the driving means 51 is detached from the shutter roller 41b. In this position, the integrated hopper 31 is tilted so that the upper surface side thereof is directed to the front of the apparatus, so that the inside of each housing portion 32 can be easily seen by an operator standing in front of the apparatus. Therefore, the inside of each accommodating portion 32 of the integrated hopper 31 can be easily cleaned. Further, since the hook 53 of the driving means 51 is disengaged from the shutter roller 41b, the shutter 33 is in an open / close free state, and cleaning can be performed more easily. Further, since the integrated hopper 31 is below the use position, there is a margin above it, and the operator can easily approach a portion (for example, driving means described later) behind the integrated hopper 31 in the apparatus. Work is easy.
[0045]
The use position shown in FIG. 7 and the maintenance position shown in FIG. 9 can be selected from each other via the movement state shown in FIG. 8, and the operator manually moves the integrated hopper 31 between the two positions. Can do.
First, an operation for setting the integrated hopper 31 in the use position shown in FIG. 7 to the maintenance position will be described. Pull the integrated hopper 31 forward while lifting it from the use position. The first and second support shafts 42A, 42B move upward along the first and second engagement grooves 44A, 44B, and the second support shaft 42B gets over the curved portion 47, and the first support shaft 42A Ride on the horizontal edge 48.
[0046]
As shown in FIG. 8, the integrated hopper 31 moves downward due to its own weight while being supported by an unillustrated worker, and the second support shaft 42 </ b> B moves downward along the first guide portion 45. At the same time, the first support shaft 42A moves along the second guide portion. In the movement during this time, the total weight of the integrated hopper 31 does not become a burden on the worker, and a part of the weight is added to the hopper support member 43 via the guide portion 45. Compared with the case where the hopper is removed from the apparatus main body, the work becomes easier and less dangerous. When the second support shaft 42B enters the vertical edge 46 at the front lower end portion of the first guide portion 45, the integrated hopper 31 is supported by the operator, and at once, in the first engagement groove 44A by its own weight. The maintenance work position shown in FIG. 9 is set.
[0047]
Next, an operation for setting the integrated hopper 31 in the maintenance work position in FIG. 9 to the use position in FIG. 7 will be described. The operator lifts the integrated hopper 31 in the maintenance work position so that the second support shaft 42B is slightly pressed against the vertical edge 46, and the second support shaft 42B is guided to the first guide portion 45. Furthermore, the integrated hopper 31 is pushed up by moving the second support shaft 42 </ b> B obliquely upward along the first guide portion 45. During this time, the first support shaft 42 </ b> A can move smoothly along the second guide portion 49. In the movement during this time, the integrated hopper 31 is pushed up along the oblique guide portion 45, and the first support shaft 42A moves smoothly along the second guide portion 49 and has little resistance. Compared with the case where the operator manually attaches the hopper completely removed from the apparatus to the apparatus main body, the work becomes easier and less dangerous.
[0048]
When the first support shaft 42A rides on the horizontal edge 48 and the second support shaft 42B gets over the curved portion 47, the first and second support shafts 42A and 42B are respectively in the first and second engagement grooves 44A. , 44B and engages. At the same time, the shutter roller 41b of the integrated hopper 31 engages with the hook 53 of the driving means 51, and the driving means 51 and the shutter 33 enter an interlocking relationship. Thus, the integrated hopper 31 is set to the use position shown in FIG.
[0049]
Thus, in the combination weighing device 1 of this example, the horizontal hoppers excluding the weighing hopper 5, that is, the stock hopper 4 and the memory hopper 6 are constituted by the integrated hopper 31. As a result, when cleaning the hopper, the stock hopper 4 and the memory hopper 6 that are conventionally individually configured are removed from the main body of the device one by one and placed on the floor or the like. Although it was transported, if the stock hopper 4 and the memory hopper 6 are each changed to the maintenance position by one mounting change operation, the maintenance work inside the apparatus main body hidden behind the hopper and the hopper can be facilitated with less labor. In addition, the hopper need not be placed on the floor or transported to another place for cleaning or the like. As a result, the maintenance work time of the hopper and the like can be greatly shortened, the maintenance work can be set up smoothly, the work time can be shortened, and labor and labor can be reduced, and a series of work can be performed efficiently.
[0050]
Since the integrated hopper 31 is attached to the apparatus main body 1a and moves between the use position and the maintenance position, the posture is maintained so that all the shutters 33 are closed. Then, each shutter roller 41b is appropriately engaged with the hook 53 of the corresponding drive shaft 52. Moreover, when changing the mounting of the integrated hopper 31 from the use position to the maintenance position, it is only necessary to pull the integrated hopper 31 upward and pull it lightly toward the front. The integrated hopper 31 is mounted on the apparatus main body 1a. It can be set as the suspended state which is easy to clean as it is. Further, since all hoppers including the integrated hopper 31 do not require a biasing means such as a spring for biasing the shutter to the closed state, the number of parts is reduced by that amount, and the cost can be reduced by a simple structure. Can be planned.
[0051]
In the example described above, as a hopper that can be arbitrarily replaced between the use position and the maintenance position, a combination weighing device in which units with so-called channels arranged in a horizontal row are arranged back to back is used as a stock hopper. Although the body type hopper has been exemplified, it is of course not limited thereto. That is, the combination weighing device may have a channel only on one side. Further, the hopper is not limited to an integrated hopper having a plurality of storage units, and may be a single hopper in which one storage unit is one hopper. Moreover, as a use of a hopper, regardless of the name, all hoppers that can be used in the combination weighing device are targeted.
[0052]
【The invention's effect】
As is apparent from the above description, according to the present invention, the use position for engaging the two engagement protrusions provided on the side surface of the hopper with the two engagement grooves of the hopper support member on the apparatus main body side, and the back The hopper can be moved between the maintenance position in which the engagement protrusion on the side is engaged with the engagement groove on the front side of the hopper and the hopper is suspended. The engaging protrusion is guided by the guide portion. Therefore, the movement from the use position to the maintenance position and the movement from the maintenance position to the use position do not require labor, and are simple and safe, and there is no possibility that the hopper is accidentally removed and dropped. Further, since the hopper can be suspended from the apparatus main body, maintenance work such as cleaning can be performed without placing the hopper on the floor.
[Brief description of the drawings]
FIG. 1 is a side view showing the overall configuration of a combination weighing device according to the present invention.
FIG. 2 is a plan view of the combination weighing device
FIG. 3 is a front view of the combination weighing device.
FIG. 4 is a diagram showing an example of an installation state of the combination weighing device
FIG. 5 is a perspective view showing a schematic configuration of an integrated hopper of the combination weighing device according to the present invention.
6 is a schematic front view of the integrated hopper of FIG. 5;
7 is a side view showing an engagement relationship between the integrated hopper of FIG. 5 and a support member in a use state.
8 is a side view showing an engagement relationship between the integrated hopper of FIG. 5 and a support member at an intermediate position between a use position and a maintenance position.
9 is a side view showing an engagement relationship between the integrated hopper of FIG. 5 and a support member in a maintenance position.
FIG. 10 is a diagram showing an example of a schematic configuration of a conventional combination weighing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Combination measuring device, 1a ... Device main body, 3 ... Supply trough, 4 ... Stock hopper, 5 ... Measuring hopper, 6 ... Memory hopper, 31 ... Integrated hopper, 31a ... Hopper main body, 32 ... Storage part, 33 ... Shutter , 41... Attachment member, 41 a... Attachment shaft (rotation shaft), 41 b... Shutter roller (shutter opening / closing member) as an engagement portion provided on the shutter, 42... Support shaft as engagement protrusion, 42 A. First support shaft as an engagement protrusion, 42B ... Second support shaft as an upper rear engagement protrusion, 43 ... Hopper support member, 44 ... Engagement groove, 44A ... First engagement groove as a lower front engagement groove , 44B ... second engagement groove as upper and rear engagement groove, 45 ... first guide portion, 49 ... second guide portion, 51 ... drive means, 52 ... drive shaft (drive shaft), 53 ... hook ( Engagement member).

Claims (3)

A supply trough (3) for supplying an object to be weighed, a stock hopper (4) arranged below the supply trough for storing and discharging a predetermined amount of the object to be weighed supplied from the supply trough, A channel (8) comprising a weighing hopper (5) arranged below and weighing and discharging the object to be weighed supplied from the stock hopper is formed, and a plurality of the channels are arranged side by side, and the stock hopper Alternatively, the weighing hopper is a combination weighing device (1) that is detachable from the device main body (1a),
An upper rear engagement protrusion (42B) and a lower front engagement protrusion (42A) provided to protrude from a pair of side surfaces of either the stock hopper or the weighing hopper,
An upper rear engagement groove (44B) and a lower front engagement groove (44A), respectively, and a pair of support members (43) provided in the apparatus main body;
The stock hopper or the weighing hopper used position where the upper rear engagement protrusion engages with the upper rear engagement groove and the lower front engagement protrusion engages with the lower front engagement groove;
The upper rear engagement protrusion engages with the lower front engagement groove, and the lower front engagement protrusion and the upper rear engagement groove do not participate in engagement, and the maintenance work position of the stock hopper or the weighing hopper But,
A combination weighing device configured to be selectable as an attachment position of the detachable stock hopper or the weighing hopper with respect to the device main body. The support member (43) includes a first guide portion (45) provided to be inclined from the upper rear engagement groove (44B) toward the lower front engagement groove (44A), and a lower front engagement groove. And a second guide portion (49) provided to be curved in front of the
When the hopper of either the stock hopper (4) or the weighing hopper (5) that is made detachable is moved along the support member between the use position and the maintenance work position, the stock hopper An upper rear engaging protrusion (42B) of the hopper or the weighing hopper is guided to the first guide part, and a lower front engaging protrusion (42A) of the stock hopper or the weighing hopper is guided to the second guide part. The combination weighing device (1) according to claim 1, wherein the combination weighing device (1) is configured as described above. The combination weighing according to claim 2, wherein the stock hopper (4) is an integrated hopper in which a plurality of receiving portions (32) for storing a predetermined amount of the objects to be weighed are arranged in a horizontal row. Device (1).

Images