JP2001356043A - Combined metering device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate setting and detaching hoppers to a housing of a combined metering device. SOLUTION: The metering device is designed so that the hoppers can be set and detached to supporting arms projecting outward from the housing while the hoppers are viewed at side parts thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a combination weighing device.

[0002]

2. Description of the Related Art For example, articles such as potato chips, peanuts, fruits, sausages, and the like, each of which has a non-uniform mass, are packed into a predetermined mass or a mass close to the predetermined mass, and packed in a bag. A weighing device is used.

In this combination weighing apparatus, a large number of radiating feeders are provided radially around a central dispersion table, and stock hoppers, weighing hoppers and the like are vertically arranged below the tip of each radiating feeder. A circular collecting chute is provided below the hopper, and the objects to be weighed are supplied to the dispersion table by a conveyor or the like,
The objects to be weighed supplied from the dispersion table are supplied to each stock hopper by a number of radiation feeders, and the mass of the objects to be weighed supplied from each stock hopper is weighed for each weighing hopper. Then, the masses of the objects to be weighed in the plurality of weighing hoppers are combined and added, and a predetermined mass or a combination close to the predetermined mass is selected, dropped on a collecting chute to collectively, and sent to the next process such as a packaging machine.

A conventional combination weighing apparatus having such a structure, as shown in FIG. 21, for example, includes a large number of stock hoppers 1 and weighing hoppers 2 arranged in a circumferential direction, and the like. A bracket 4 projecting from the outer periphery,
5 is an engaging member 1 provided on the back of the hoppers 1 and 2 respectively.
It is removably supported by 7a, 17b and 18a, 18b and is frequently hung and removed for cleaning the hoppers 1, 2 and for maintenance.

Each of the hoppers 1 and 2 has an opening / closing lid 6 and 7 for opening and closing a lower outlet, respectively.
A movable body which is provided with opening / closing link mechanisms 8, 9 and restoring springs 10, 11 for opening / closing the opening 7 on the outer surfaces of the walls of the hoppers 1, 2, respectively, and which is driven by a driving source arranged in the housing 3. The movable bodies 12 and 13 are provided to protrude outward from holes (not shown) of the housing 3.
Drives the opening / closing link mechanisms 8, 9 of the hopper to open / close the lid 6,
7 is opened and closed by the recovery springs 10 and 11. (Note that in FIG. 19, 14 is a central dispersion table, and 15 is a radiation feeder.)

[0006]

However, in the conventional combination weighing device having such a structure, a mechanism for attaching and detaching the hoppers 1 and 2 to and from the casing 3 is provided on the rear surfaces of the hoppers 1 and 2 so that the work is performed. Since the person must frequently carry out the work of removing and mounting many hoppers 1 and 2 on a high table without being visible, the work of removing and attaching the hoppers 1 and 2 is very difficult.

Further, since the mounting structure of the hoppers 1 and 2 and the opening / closing drive structure of the opening / closing lid are separated, the entire structure is extremely complicated. An object of the present invention is to provide a combination weighing device that solves such a disadvantage.

[0008]

According to a first aspect of the present invention, there is provided a combination weighing apparatus, comprising:
On a support arm protruding outward from the housing,
It is detachably supported on the side of the hopper body.
Therefore, the operator can attach and detach the hopper while looking at the side of the hopper with his or her eyes.

In the combination weighing device according to a second aspect of the present invention, a hook is fixed to a side wall of the hopper, and the hopper is supported by the support arm by locking the hook to the support arm. So that it can be easily removed by hook.

[0010] In the combination weighing device according to the third aspect of the present invention, the hook is a leg supported from below by the support arm, and a rotation restricting means for restricting rotation of the hopper relative to the support arm by gravity. Therefore, the rotation of the hopper around the lower end of the leg of the hook due to gravity can be reliably supported in a state where the rotation of the hopper is prevented by the rotation restricting means.

In the combination weighing device according to a fourth aspect of the present invention, the hook has a leg supported from below by the support arm, and a rotation restricting device that restricts rotation of the hopper relative to the support arm by gravity. Means, and the support arm has a movement restricting means for restricting the movement of the leg in the axial direction of the support arm, so that the hopper does not come off even if the support arm is provided inclined from the horizontal. .

Further, in the combination weighing device according to the fifth aspect of the present invention, since the support arm includes a pipe portion incorporating driving means for opening and closing an opening and closing lid for opening and closing the discharge port of the hopper, the support arm is provided. However, the structure can be significantly simplified because the hopper serves both to support the hopper and to drive the opening / closing lid.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a combination weighing device according to an embodiment of the present invention. As shown in FIG.
A main body 21 having a polygonal cylindrical shape corresponding to the number of heads which are opened up and down and the lower side has a slightly smaller diameter; an upper lid 22 which is detachably fixed over the upper opening of the main body 21; And a bottom plate 23 in the shape of a polygonal dish with an open top surface, which is detachably fixed with the upper end portion slightly inserted from the lower surface opening.

The main body 21 is composed of a plurality of flat-plate-like side walls 21a, 21a,... Having a narrower lower side constituting a polygon, and the bottom plate 23 has a lower side constituting a polygon having a smaller width. , And a bottom plate 23b in the form of a polygonal flat plate.

As shown in FIGS. 2 and 3, horizontal portions 30 a, 30 a,... Of the upper ends of four vertical columns 30, 30, penetrate into the side wall 21 a of the main body 21 of the housing 20. The main body 21 is supported by the four columns 30, 30,... The four horizontal portions 30a,
Are fixedly connected to each other at right angles to each other in the shape of a cross at the center of the main body 21. Four pillars 30, 30, ...
Are connected and fixed to each other by horizontal frames 31, 32, 33, 34.

A bulged portion 22a at the center of the upper lid 22 of the housing 20
A circular umbrella-shaped dispersion table 25 is provided at the upper part of the table.
26 are provided radially (only one is illustrated in FIGS. 1 and 2).

Each side wall 21a, 21a of the housing body 21
... have horizontal portions 30 at the upper ends of the columns 30, 30,.
a, 30a,..., are provided with upper and lower circular arm insertion holes 27, 28 corresponding to the respective radiation feeders 26, 26,. Further, an arm insertion hole 29 is provided in each side wall 23a of the bottom plate 23.

As shown in FIG. 2, each arm insertion hole 2
Support arms 41, 42, and 43 are provided to project radially outward from 7, 28, and 29, respectively. And
A stock hopper 51, a weighing hopper 52, and a memory hopper 53 are detachably attached to each of the support arms 41, 42, and 43, and an object to be weighed falling from the tip of the radiation feeder 26 is supplied to the stock hopper 51. The data is supplied from the weighing hopper 51 to the weighing hopper 52 and is supplied from the weighing hopper 52 to the memory hopper 53.

Below the housing 20, a circular funnel-shaped collecting chute 55 is attached by the horizontal frames 31 to 34, and a detachable guide chute 56 is attached to each memory hopper 53. The objects to be weighed from the plurality of memory hoppers 53, 53 fall through the guide chutes 56, 56,... To the collecting chute 55 (in FIG. 1, the support arms 41, 42, 43, the stock hopper 51, the weighing hopper 52). , Only one memory hopper 53 and one guide chute 56 are shown.)

The base of the uppermost support arm 41 for supporting the stock hopper 51 is fixed to a base (not shown) provided inside the main body 21 of the housing 20. Lowermost support arm 4 for supporting
3 is fixed to a base (not shown) provided inside the bottom plate 23 of the housing 20, and both arm insertion holes 27, 2
9, a support arm 42 for supporting the intermediate weighing hopper 52 is fixed to a base (not shown) fixed in the main body 21 of the housing 20. Is fixed to the free end side of a fixed measuring instrument (not shown), and the waterproof cover 28a is elastically structured like a bellows structure so as not to hinder the vertical movement in the arm insertion hole 28. Have been.

4 to 8 show a support arm 42 (the other support arms 41 and 43 have the same configuration as this support arm 42). The support arm 42 includes a hollow cylindrical arm 61 having an open base. A mounting flange 62 protrudes from the base.

As shown in FIG. 7, the distal end surface 61 of the arm 61
a screw hole 63 is provided in the center of
And the screw hole 63 is normally closed. An annular recess 63a is provided on the outside of the screw hole 63,
A waterproof ring 65 is fitted into the annular recess 63a. For this reason, when the cover screw 64 is screwed, the waterproof ring 65 prevents water from entering into the inside from the screw hole 63 at the time of washing with water or the like.

In the vicinity of the tip of the arm 61, there is provided an annular groove 66 with which a first leg plate 112 of a hook 111 of the hopper 52 to be described later engages to regulate the axial movement of the arm 61. On both sides of the annular groove 66, hooks 111 of the hopper 52 are provided.
The first leg plate 112 is provided with tapered portions 66a and 66b so as to be easily inserted.

On the arm portion 61, a cylindrical bulging body 67 is provided so as to protrude integrally above the arm portion 61 on the base side of the annular groove 66. This cylindrical expanded body 6
Reference numeral 7 denotes a bottomed cylindrical shape having an open end, which is connected in a lateral direction perpendicular to the arm portion 61. As shown in FIG. The cylindrical portion 67b is on the same plane as the tangent line, and the cylindrical portion 67b projects further outward than the opposite side surface of the arm portion 61.

As shown in FIG. 8, a plurality of studs 68 project from the inner surface of the bottom plate 67a of the cylindrical bulging member 67. First holding plate 70 holding first bearing 69
And a second holding plate 72 holding the second bearing 71
However, the distal end of the long screw 74 is connected to the second holding plate 72 between the first holding plate 70 and the second holding plate 72 via the hollow cylindrical spacer 73.
Are fixed in parallel with each other by screwing into the stud 68 from the hole of the holding plate 72 through the hole of the spacer 73.

A stud 75 having a screw hole is attached to the second holding plate 72, and the hole of the disk lid 76 for closing the opening 67c of the cylindrical portion 67b of the cylindrical bulging member 67 is inserted into the screw hole. The disk cover 76 is attached by screwing the screws 77, 77. The disk lid 76 and the opening 6
A ring-shaped packing 78 is sandwiched between 7c for waterproofing.

The shaft 81 of the opening / closing drive lever 80 for driving the opening / closing lid 125 of the hopper 52 is held rotatably by front first and second bearings 67 and 71. The shaft 81 passes through a hole in the waterproof disk-shaped packing 79 fitted in a hole in the bottom plate 67 a of the cylindrical bulging body 67, and the bottom plate 67 passes through the hole.
a, which is fixed to a band-shaped opening / closing drive lever 80 parallel to the bottom plate 67a. At the lower end of the opening / closing drive lever 80, a longitudinal engagement ridge 80a of the opening / closing drive lever 80 that engages with an opening / closing lid 125 described later protrudes.

The upper end of a crank 82 is fixed to the shaft 81. An operation bar 84 is housed inside the arm 61 with one end protruding outward. The operating bar 84 includes a strip 84a and side plates 84 bent at right angles on both sides thereof.
b and 84c, each having a U-shaped cross section.
As shown in FIG. 7, one end of the band plate 84a is rotatably attached to a pin 85a of a rotating plate 85 which is rotated by an opening / closing drive motor (not shown) provided on the main body 21 of the housing 20.

At the other end of the operation bar 84, as shown in FIGS. 7 and 8, rectangular blocks 86 are provided on both side plates 84b and 8b.
4c, it is accommodated movably in the longitudinal direction along the band plate 84a. A lower end of the crank 82 having an upper end fixed to the shaft 81 is rotatably attached to a pin 87 implanted at one end of the block 86.

As shown in FIG. 7, a screw hole 88 is provided in the longitudinal direction at the other end face of the block 86, and an edge plate 84d is provided at the other end of the operation bar 84.
An adjustment screw 89 inserted through the hole d is screwed into the screw hole 88.

A coil spring 90 is housed in both side plates 84b and 84c of the operating bar 84 so as to surround the adjusting screw 89, and one end of the coil spring 90 is connected to a block 86.
, And the other end urges the block 86 in the direction away from the edge plate 84d by pressing the inner surface of the edge plate 84d. Therefore, the head 8 of the adjusting screw 89
9a is always in contact with the edge plate 84d, and the block 86 is always located at the same position determined by the screwing depth of the adjusting screw 89.

For this reason, as shown in FIG. 5, when the rotating plate 85 is rotated by the open / close drive motor, the operating bar 84 is rotated.
Reciprocates in the arm 61, and the crank 82 rotates integrally with the shaft 81 around the shaft 81 in response to the movement of the operation bar 84. For this reason, the opening / closing drive lever 80 is integrated with the shaft 81 at a predetermined angle by the reciprocating movement of the operation bar 84,
After rotating clockwise, it rotates counterclockwise and returns to the original position. Thus, the opening and closing of the opening / closing lid 125 described later is executed.

The cap screw 64 is removed from the screw hole 63 at the tip of the arm 61, and a wrench or the like having a polygonal pillar at the tip is inserted through the screw hole 63 to form a polygonal hole 89a 'of the head 89a of the adjusting screw 89. The crank 82 (and the opening / closing drive lever 80) is adjusted by adjusting the position of the block 86 by adjusting the length of screwing of the block 89 into the screw hole 88 of the block 86 by rotating the adjustment screw 89. Angle can be adjusted. Thereby, the discharge port of the hopper 51 can be adjusted so that the opening / closing lid 125 is reliably closed.

A hole 67b 'is provided at the center of the upper portion of the cylindrical portion 67b of the cylindrical bulging member 67, and a hopper
The lower end portion of the second hook 111 is fixed by caulking so that a cylindrical engaging projection 95 for engaging with the engaging hole 117 of the upper plate 113 projects upward from the hole 67b '.

The cylindrical engaging projection 95 has a notch 96 on the side of the cylindrical bulging body 67 opposite to the bottom plate 67a. Flat tapered portion 96a inclined so as to be depressed
Is provided.

The constructions of the upper support arm 41 and the lower support arm 43 are exactly the same as those of the above-described support arm 42, so that the description will be omitted. 9 to 12 show a weighing hopper 52 (the other hoppers 51 and 53 are completely the same as the weighing hopper 52 except for the extent of the expansion of the upper portion of the hopper body).

The hopper 52 includes a hopper body 100, an opening / closing lid 125 for opening and closing the discharge port of the hopper body 100, and a hook 111 for hanging the hopper body 100 on and off the support arm 42.

The hopper body 100 has a substantially quadrangular pyramid shape in which a front plate 101, a back plate 102, and both side plates 103 and 104 are rounded and continuous, and the front plate 101, the back plate 102, the both side plates 103, 104 is provided with a storage opening 106 at the upper end of the upper half part which gradually expands in a trumpet shape toward the upper side, the side plates 103 and 104 are parallel to each other, and the front plate 101 and the back plate 102 are gradually narrowed with the lower side gradually approaching. A discharge port 108 is provided at the lower end of the lower half.

At the upper part of the lower half of the hopper, a band plate 110 is fixed by appropriate means such as welding so as to be wound around the outer surface along the side plate 103, the back plate 102 and the side plate 104.

As shown in FIG. 10, from the end 110a of the strip 110 on the side of the side plate 104, the support arm 4
A hook 111 for hanging the hook 2 is integrally provided.

The hook 111 has a substantially U-shape. The first leg plate 112 is a vertical flat plate-like leg 112 bent at a right angle from the end 110a of the strip 110.
2 is a flat plate-shaped upper plate 113 which is curved in an arc shape from the upper end of the second leg plate 2 and is provided continuously in the horizontal direction and is orthogonal to the first leg plate 112.
And the second leg plate 1 in the form of a flat plate parallel to the first leg plate 112 and continuously curved in an arc shape downward from the end of the upper plate 113.
14.

At the lower end of the first leg plate 112, FIG.
As shown in FIG. 5, the first and second inclined end surfaces 115a and 115b for abutting from the left and right on both sides above the annular bottom 66c of the annular groove 66 at the tip of the arm portion 61 of the support arm 42. A first engagement recess 115 whose lower side is expanded in a letter shape is provided, and the lower end of the second leg plate 114 is provided with the arm slightly closer to the base side than the cylindrical bulging body 67 as shown in FIG. A second engaging recess 116 having third and fourth inclined end surfaces 116a and 116b for abutting from the left and right on the upper side of the outer peripheral surface of the portion 61 and having a lower side expanding in a "C" shape is provided. ing.

Further, an engaging projection 95 projecting above the cylindrical bulging body 67 is inserted into the upper plate 113 of the hook 111 at a position slightly closer to the second leg plate 114 so as to be engaged. Taper portion 96 of notch 96 of projection 95
An engagement hole 117 having a linear hole edge end face 117a abutting on a is provided.

A tongue piece 114a extending from the second leg plate 114 to the band plate 110 is provided in a protruding manner.
10 is fixed by welding.

As shown in FIG. 9, mounting shafts 120 and 121 are planted at the same linear position of the end 110a on the side plate 103 and the end 110b on the side plate 104 of the hopper body 100 of the strip plate 110. The mounting shafts 120, 1
21, plate-shaped parallel rotating arms 122 and 123 are rotatably attached to each other.

The mounting shafts 120 and 12 which are the centers of rotation are
Reference numeral 1 is on the same line as the axis of the shaft 81 of the opening / closing drive lever 80 of the support arm 42 in a state where the hook 111 is mounted on the support arm 42.

The rotating arms 122 and 123 are perpendicular to the bottom plate 12.
4, an opening / closing lid 125 for closing the outlet 108 of the hopper body 100 is fixed to the upper surface of the bottom plate 124 by an appropriate means such as welding.

An adjusting plate 127 having a rectangular slit 126 (FIG. 16) at the lower end thereof, on which the engaging ridge 80a of the opening / closing drive lever 80 is inserted from below, is superimposed on the outer surface of the rotating arm 123. Stud 121 as well as rotating arm 123
Is mounted to be rotatable.

The adjusting plate 127 has an elliptical cam hole 128 on the side of the engaging slit 126 as shown in FIGS.

A shaft 129b of a bolt 129 having a head 129a fixed to the back surface of the rotating arm 123 by appropriate means such as welding.
Are projected outward through the hole 123a of the rotating arm 123, and further project outward through the hole 131 of the cam body 130 accommodated in the cam hole 128 of the adjusting plate 127. ing.

The cam body 130 has an elliptical cam hole 12.
8, for example, a regular hexagonal plate-like base 1 having a dimension larger than the minor axis
A circular disk 13 having a diameter slightly smaller than the short axis and a thickness slightly smaller than the thickness of the adjusting plate 127
0b is projected, and the hole 131 is located at a position eccentric from the center of the perfect circle of the disk 130b. Then, a cap nut 132 is screwed onto a screw surface at the tip of the shaft portion 129b of the bolt 129 on the outer surface of the base 130a, and the adjusting plate 127
Of the cam body 130 and the back surface of the outer edge of the base 130a of the cam body 130.

Therefore, when the cap nut 132 is loosened and the cam body 130 is rotated, the cam body 130 rotates around the hole 131 at the eccentric position, that is, the shaft portion 129b of the bolt 129 fixed to the rotating arm 123. Around the disk 130
Pressing the hole end face of the elliptical cam hole 128 at the periphery of b,
As shown in FIG. 18, the adjustment plate 127 can be rotated about the mounting shaft 121 with respect to the rotating arm 123. Therefore, by adjusting the rotational position of the adjusting plate 127 with respect to the rotating arm 123 and retightening the cap nut 131 in this manner, the mounting angle of the adjusting plate 127 with respect to the rotating arm 123 can be changed, and the opening / closing lid 125 can be opened and closed. Outlet 1 sure
08 can be adjusted by the cam body 130 to close.

As shown in FIG. 16, on the outer surface of the adjusting plate 127, a plate-like spacer 140 is fixed by welding or other appropriate means so that the notch 141 overlaps the slit 126.

The notch 141 of the spacer 140 corresponds to the entrance 1
41a and a circular portion 141b at the back thereof. Notch 1 of slit 126 of spacer 127 and spacer 140
The entrance 141a of the opening 41 is set to be considerably wider than the engagement ridge 80a so that the engagement ridge 80a of the opening / closing drive lever 80 does not coincide with the linear direction of the slit 126 and can pass even slightly obliquely.

Circular portion 1 of notch 141 of spacer 140
A rotating body 150 that is in the shape of a disc that can rotate in contact with the inner peripheral surface of the circular portion 141b and that has a thickness slightly smaller than the spacer 140 is accommodated in the 41b.

The rotating body 150 includes the slit 12
6 and a diametrically engaging slit 151 into which the engaging ridge 80a of the opening / closing drive lever 80 entering from the entrance 141a is inserted and engaged. This engagement slit 1
Tapered portions 151a, 151a are provided on both sides of the entrance of 51 so that the engaging ridge 80a can be easily inserted.

On the outer surface of the spacer 140, a rotating body 150
The cover plate 160 is fixed by appropriate means such as welding so as not to come off. The cover plate 160 has a rectangular notch 16 having tapered portions 161a on both sides of the entrance.
1 is provided. A plate-shaped stopper 162 that is bent inward is provided at the back of the notch 161.

The plate-like stopper 162 is in a state of entering the deep portion of the engaging slit 151 of the rotating body 150, and the engaging slit 151 of the rotating body 150 rotates more than necessary to This is for restricting the rotation range of the rotating body 150 so as not to be disengaged from the entrance 141a and prevent the engagement ridge 80a from entering.

In the system in which the opening / closing lid of the hopper is closed by the urging force of the recovery spring, the collision sound when closing is a loud noise. For this reason, in the method of closing the opening / closing lid by driving the motor, if the engagement of the opening / closing drive lever 80 with the engagement ridge 80a is loose, it cannot be completely closed. For this reason, in order to make the engagement between the slit and the engaging ridge 80a in a completely close state without rattling, it is necessary to make the width of the engaging slit as narrow as possible. However, if the width of the engagement slit is reduced, the engagement ridge 8 may be required when the hopper is mounted on the support arm.
It is difficult to smoothly insert Oa into the engagement slit.

However, in the above embodiment, the adjustment plate 127
The slit 126 has a wide width and is provided with a rotating body 150, and the rotating body 150 is provided with an engaging slit 151 which is engaged with the engaging ridge 80a without looseness.
Even if the engaging ridge 80a is in the same direction as the slit 126 as shown in FIG. 9 or is oblique as shown in FIG.
The engagement ridge 80a is guided by the tapered portion 151a and advances to the engagement slit 151 of the rotating body 150, and the engagement ridge 80a
The rotating body 150 rotates so as to be in the same direction in accordance with the approach of the vehicle, so that even if the slit 126 and the engaging ridge 80a are slightly inclined from the same straight line, the rotating body 150 absorbs this inclination. It can be smoothly inserted and engaged.

When removing the hopper, the rotating body 1
When the engaging ridge 80a starts to come off from the engaging slit 151 of the opening 50, the rotating arm 123 starts to rotate by its own weight of the opening / closing lid 125 and starts to tilt with respect to the engaging ridge 80a. Since it rotates in accordance with the inclination, the engaging ridge 80a can be removed smoothly.

As described above, the support arm 42 and the hopper 52
In order to attach the hopper 52 to the support arm 42, the opening / closing lid 12 is closed so that the outlet 108 is closed.
5 while holding the hopper body 100 with the other hand while supporting it with one hand from below,
The upper end of the engagement ridge 80a at the lower end of the hopper 52 is aligned with the slit 126 (notch 14
1 inlet portion 141a, notch 161 of cover plate 160)
, While passing through the engagement hole 117 of the upper plate 113 of the hook 111 through the engagement protrusion 95 projecting upward from the cylindrical bulging body 67 of the support arm 42,
The first leg plate 112 of the hook 111 is tapered into the annular groove 66 at the tip of the arm portion 61 of the support arm 42.
And insert the second leg plate 114 into the arm portion 61.
Put it on the base side of the cylindrical bulging body 67 and release the hand.

In this manner, the engagement ridge 80 a of the opening / closing drive lever 80 is engaged with the engagement slit 151 of the rotating body 150.
If the engaging ridge 80a and the engaging slit 151 do not coincide on the same straight line, the rotating body 150
Are rotated in the circular portion 141b of the notch 141 of the spacer 140 so that the engagement ridge 8 fits the engagement ridge 80a.
Oa enters the engaging slit 151 of the rotating body 150 and is engaged therewith.

The first and second inclined end surfaces 115a and 115b on both sides of the first engaging concave portion 116 of the first leg plate 112 which are cut out in the shape of a letter "C" form the cylindrical groove bottom 66a of the annular groove 66. The third and fourth sides of the second engaging recess 116 which is in contact with the upper sides of the
The inclined end surfaces 116a and 116b of the hopper main body 100 abut on both upper sides of the cylindrical arm portion 61, and a clockwise (in FIG. 14) rotational moment due to the mass of the hopper main body 100 causes the hopper main body 100 of the engaging hole 117 of the upper plate 113 to move. The hopper 52 is supported by the support arm 42 in a state where the linear hole edge end surface 117a on the side away from the support arm 42 is in contact with the upper tapered portion of the notch 96 of the engagement projection 95 of the support arm 42. Is held.

In the state where the hopper 52 is supported by the support arm 42, the hopper main body 10 shown in FIG.
As described above, the clockwise moment A due to the mass of zero is applied to the tapered portion 96a of the notch 96 of the engaging projection 95 by the hole edge end surface 11 of the engaging hole 117 of the upper plate 113 of the hook 111.
7a is pressed, and the first inclined end surface 115a of the first leg plate 112 on the hopper main body 100 side is pressed against the groove bottom 66a of the annular groove 66 of the arm 61, and the second leg plate 11 is pressed.
The fourth inclined end face 116 a of the hopper body 100 on the side of No. 4 is supported by being pressed against the outer peripheral surface of the arm portion 61.

When a counterclockwise moment B shown in FIG. 13 is applied by driving the opening / closing lid or other external force, the lower end of the first leg plate 112 (the first engagement recess 115 Are pressed against the groove wall on the distal end side of the annular groove 66 of the support arm 42, and the third and fourth inclined end surfaces 116 of the second leg plate 114 are
a and 116 b are supported by being pressed against the outer peripheral surface of the arm portion 61.

In the case where a clockwise moment C acts reversely in FIG. 13, the edge of the engaging hole 117 of the upper plate 113 of the hook 111 is pressed against the engaging projection 95 of the support arm 42, and The first and second inclined end surfaces 115a and 115b of the one leg plate 112 are supported by being pressed against the groove bottom 66a of the annular groove 66 of the leg 61.

The axial movement of the arm portion 61 of the support arm 42 is such that the first leg plate 112 is restricted by the groove walls on both sides of the annular groove 66, and the edge of the engagement hole 117 of the upper plate 113 and the support arm It is regulated by the engaging projections 95 of 42.

Therefore, even if the support arms 41, 42, and 43 have different downward inclinations on the distal end side of the support arms, they are supported irrespective of this. Although the hopper 52 can be attached to the support arm 42 very easily in this manner, the hopper 52 can be reliably supported without moving or rattling even if it receives the above-mentioned force in all directions. Can be

As described above, the first and second inclined end surfaces 115a and 115b of the first leg plate 112 abut on the groove bottom 66a of the annular groove 66 of the support arm 42 at any two points. Also, since the third and fourth inclined end surfaces 116a and 116b of the second leg plate 114 abut on the outer peripheral surface of the arm portion 61 at any two points, even when the dimensional accuracy of these components is not high, Since the dimensional error is absorbed, even if there is a slight dimensional error, it can be supported without rattling without being affected.

A part of the height of the tapered portion 96a in which the notch of the engaging projection 95 is gradually deepened is formed on the linear hole edge end face 117a of the engaging hole 117 of the upper plate 113 of the hook 111. Therefore, even if the dimensional accuracy of these components is not high, the dimensional errors are absorbed, so that even if there are some errors, they can be supported without any backlash without being affected by the errors.

The rotating plate 8 is driven by a motor (not shown).
5, the open / close lid 125 is opened and closed.
Is in the closed position and the discharge port 108 of the hopper body 100 is
So that the opening and closing lid 108 is firmly closed,
The relative angle between the adjusting body 127 and the rotating arm 123 by the rotation of the cam body 130 can be adjusted, and the cover screw 64 at the tip of the arm portion 61 of the support arm 42 is removed and a tool is inserted to adjust the angle. Rotate screw 89 to block 86
By changing the position on the operation bar 84, the opening / closing lid 108 can also be adjusted so as to be firmly closed.

In the above description, the intermediate support arm 4
2 and the weighing hopper 52, the upper and lower support arms 41, 43, the stock hopper 51, and the memory hopper 53 have the same configuration, and the support arms can be attached and detached in exactly the same manner.

[0074]

As described above, according to the first aspect of the present invention,
In the combination weighing device, the hopper is detachably supported on a side of the hopper main body by a support arm provided to protrude outward from the housing. Therefore, the operator can attach and detach the hopper while looking at the side of the hopper with his eyes.
The work of unscrewing the hopper becomes extremely easy and reliable.

In the combination weighing device according to the second aspect of the present invention, a hook is fixed to the side wall of the hopper, and the hopper is supported by the support arm by locking the hook to the support arm. So that it can be easily removed by hook.

In the combination weighing device according to the third aspect of the present invention, the hook is a leg supported from below by the support arm, and a rotation restricting means for restricting rotation of the hopper relative to the support arm by gravity. Therefore, the rotation of the hopper around the lower end of the leg of the hook due to gravity can be reliably supported in a state where the rotation of the hopper is prevented by the rotation restricting means.

In the combination weighing device according to a fourth aspect of the present invention, the hook is a leg supported from below by the support arm, and a rotation restricting device for restricting rotation of the hopper with respect to the support arm by gravity. Means, and the support arm has a movement restricting means for restricting the movement of the leg in the axial direction of the support arm, so that the hopper does not come off even if the support arm is provided inclined from the horizontal. .

Further, in the combination weighing device according to the fifth aspect of the present invention, since the support arm is provided with a pipe portion incorporating driving means for opening and closing an opening / closing lid for opening / closing the discharge port of the hopper, the support arm is provided. However, the structure can be significantly simplified because the hopper serves both to support the hopper and to drive the opening / closing lid.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a front view showing a state where a hopper is removed in FIG. 1;

FIG. 3 is a plan view showing a support structure of the housing.

FIG. 4 is a perspective view showing a support arm according to one embodiment of the present invention.

FIG. 5 is a front view showing the support arm.

FIG. 6 is a right side view showing the support arm.

FIG. 7 is a sectional view showing a main part of the support arm.

FIG. 8 is a sectional view showing a main part of the support arm.

FIG. 9 is a plan view showing a hopper according to an embodiment of the present invention.

FIG. 10 is a perspective view of a main part of the hopper.

FIG. 11 is a plan view of a main part of the hopper.

FIG. 12 is a front view of a main part of the hopper.

FIG. 13 is a front view showing a state where the hopper is supported by the support arm.

FIG. 14 is a right side view of the same state.

FIG. 15 is a left side view of the same state.

FIG. 16 is an exploded perspective view showing a main part of the hopper.

FIG. 17 is a sectional view showing a main part of the hopper.

FIG. 18 is a front view showing the operation of the adjusting body in the hopper.

FIG. 19 is an explanatory view showing an engagement relationship with an engagement ridge.

FIG. 20 is an explanatory view showing an engagement relationship with an engagement ridge.

FIG. 21 is a schematic configuration diagram of a conventional combination weighing device.

[Explanation of symbols]

 Reference Signs List 20 housing 21 main body 22 top lid 23 bottom dish 27, 28, 29 arm insertion hole 41, 42, 43 support arm 51 stock hopper 52 weighing hopper 53 memory hopper 55 collecting chute 56 guide chute 61 arm part 64 cap screw 66 annular groove 66c Groove bottom 67 Cylindrical bulge 80 Opening / closing drive lever 80a Engagement ridge 81 Shaft 82 Crank 84 Operating bar 86 Block 89 Adjusting screw 90 Coil spring 95 Engagement projection 96a Tapered part 100 Hopper body 108 Discharge port 111 Hook 112 First 1 leg plate 113 upper plate 114 2nd leg plate 115 1st engagement concave part 115a 1st inclined end surface 115b 2nd inclined end surface 116 2nd engaging concave surface 116a 3rd inclined end surface 116b 4th inclined end surface 117 Engagement hole 117a Hole edge end face 122, 123 times Arm 125 lid 126 slit 127 adjustment plate 128 the cam hole 130 cam body 140 spacer 141 notch 141a inlet portion 141b circular portion 150 rotating body 151 engages the slit 160 cover plate 162 stopper

Claims (5)

[Claims] 1. A combination weighing device in which a plurality of hoppers are detachably provided outside a housing, wherein the hopper is provided on a support arm projecting outward from the housing to a side portion of a hopper body. A combination weighing device characterized by being detachably supported in the device. 2. A combination weighing device in which a plurality of hoppers are detachably provided outside a housing, wherein a hook is fixed to a side wall of the hopper, and the hook is fixed to the support arm to thereby lock the hopper. The combination weighing device according to claim 1, wherein a hopper is supported by the support arm. 3. The combination weighing device according to claim 2, wherein said hook includes a leg supported by said support arm from below, and rotation restricting means for restricting rotation of said hopper relative to said support arm by gravity. . 4. The hook includes a leg supported by the support arm from below, and rotation restricting means for restricting rotation of the hopper with respect to the support arm by gravity. 3. The combination weighing device according to claim 2, further comprising a movement restricting means for restricting an axial movement of the support arm. 5. The combination weighing device according to claim 2, wherein said support arm includes a pipe section having a driving means for driving an opening / closing lid for opening and closing said discharge opening of said hopper.