JPH0645857Y2 - Trough mounting structure for automatic weighing device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for detachably attaching a trough for supplying an object to be weighed to an exciter in an automatic weighing device.

[0002]

2. Description of the Related Art Among automatic weighing devices, known as a combination weighing device is to supply the objects to be weighed to a plurality of weighing hoppers to detect the weights of these objects and to measure their weights. A combination calculation is performed based on the values to find an optimum combination for which the combined addition value is the target weight, and only the objects to be weighed in the weighing popper that correspond to this combination are discharged and collected, whereby the objects to be weighed are The target weight or a weight close to this is measured. As a structure for this, usually, a trough for supplying the object to be weighed, which is supported by an exciter, is arranged around the dispersion table, and the dispersion table and the trough are vibrated at predetermined timings respectively, and the object to be weighed is A structure is adopted in which, after being supplied onto a dispersion table and dispersed in each trough, the troughs are fed to the above-mentioned weighing hopper through a pool hopper. In that case, for example
In the '08 publication, a pair of front and rear positioning members are provided on the upper surface of the vibration exciter, the trough is engaged with the positioning member, and the trough is clamped and fixed by the toggle mechanism provided on the upper surface of the vibration exciter. The technology is disclosed.

According to this, the trough can be attached to and detached from the vibrator by moving the toggle mechanism by operating the lever.

[0004]

However, the mounting structure using the above toggle mechanism requires two procedures, that is, the operation of engaging and disengaging the trough with respect to the positioning member and the operation of the lever of the toggle mechanism. I don't like it. Further, in the above combination weighing device,
Due to dust proofing, design, and other reasons, it is desirable to cover the vibrating machine and the pedestal that support the dispersion table and trough with a cover. However, when the cover structure is used, the toggle mechanism and the like described above are also covered by the cover, so that it is necessary to remove the cover one by one in order to attach and detach the trough.

Therefore, the present invention provides a trough mounting structure for an automatic weighing device in which the trough can be attached / detached by one-touch operation, and even if the vibrating machine is covered by a cover, the trough can be attached / detached without being obstructed by the cover. The challenge is to provide.

[0006]

That is, in the device according to claim 1 of the present invention (hereinafter referred to as the first device), a trough for supplying an object to be weighed to a weighing machine can be attached to and detached from a vibrating machine. In the structure to be attached to, a locking member having a locking portion, and a lever member rotatably supported vertically by a support shaft and biased upward by a biasing member are mounted on the upper surface of the vibration exciter. On the lower surface of the trough, the first engaging pin engaged with the engaging portion of the engaging member and the first engaging pin are engaged with the engaging portion while being arranged with a required space. And a second engaging pin that pushes down the lever member as the trough is pushed from the above state, and the second engaging pin is pushed down beyond the line connecting the first engaging pin and the support shaft of the lever member. Sometimes, the second engaging pin is in the engaging direction of the first engaging pin. Characterized in that a locking recess to be fitted while under pressure to the lever member.

Further, the invention according to claim 2 (hereinafter referred to as the second invention) covers the vibration exciter with a cover, and an opening for inserting the first and second engaging pins into the cover from outside the cover. It is characterized by having a section.

[0008]

According to the first aspect of the invention described above, if the lever member is pushed down by the second engaging pin from the state where the first engaging pin is engaged with the locking member, the first engaging pin and the lever member As the second engaging pin descends beyond the line connecting with the support shaft, the pin is pressure-fitted into the locking recess provided in the lever member. The trough is fixed because the upward return is blocked.
If a force in the pulling direction is applied to the trough from the fixed state, the force overcomes the fixing force and the second engaging pin is pulled up, and the trough can be removed.

Further, according to the second invention, the first and second engagement pins provided on the trough are adapted to be engaged with the locking member and the lever member through the opening of the cover. , The trough can be attached and removed without being disturbed by the cover covering the shaker.

[0010]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 shows a schematic structure of a combination weighing device according to the present invention.
Dispersion table 3 on the upper center surface of the
And a plurality of troughs 5 and 5 for supplying the objects to be weighed are radially arranged around the table 3 via a vibrator 4 (shown in FIG. 2). In addition, an unillustrated charging chute is provided above the dispersion table 3, and a plurality of pool hoppers 6 are provided around the pedestal 2 below the tips of the troughs 5 and 5.
6 are arranged, and weighing hoppers 7, 7 are arranged below the pool hoppers 6, 6, respectively.

That is, in the weighing apparatus 1, the vibrating machine vibrates the dispersion table 3 and the troughs 5 and 5 at a predetermined timing, and the objects to be weighed are supplied from the charging chute to the dispersion table 3. By
The object to be weighed passes through the troughs 5 and 5 and the pool hoppers 6 and 6
After being supplied to the weighing hoppers 7 and 7 from the pool hoppers 6 and 6, respectively. Then, the weights of the objects to be weighed in the respective weighing hoppers 7 and 7 are detected, a combination calculation is performed on these weight values, and the combined addition value matches a predetermined target weight or is closest to the target weight. The control is performed so that the optimum combination of the values is obtained.

By the way, in FIG. 1, in the weighing device 1, except for the dispersion table 3 and the troughs 5 and 5, a vibrating part for supporting them is covered with a cover 8. In that case, the shaker 4 for the trough is mounted on the pedestal 2 while the main body frame 10 to which the shaker main body 9 is attached is supported by the base plate 11 via the spring members 12, 12. A trough support plate 13 is provided on the upper end of the frame 10. And
A locking member 15 having a locking hole 14 is fixed on the upper surface of the support plate 13 and at a position near the dispersion table 3. The locking hole 14 of the locking member 15 is provided from the upper end of the member to the dispersion table 3
And has a substantially L-shaped hole shape that descends in a radial direction (a lever member side direction described later) away from

A guide groove 16 (see FIGS. 3 and 4) in the radial direction with respect to the dispersion table 3 is provided on the upper surface of the support plate 13 at a position farther from the dispersion table 3 with respect to the locking member 15. It is provided and the guide groove 1
Openings 17 and 17 (see FIG. 3) are formed on both sides of the bearing 6, and a bearing block 18 is fitted into the guide groove 16 so as to be movable in a direction toward and away from the locking member 15.
Through the long hole 19 provided in the guide groove part of the bolt 2
By fastening 0 to the bearing block 18, the bearing block 18 is fixed at an arbitrary position in the guide groove 16.

A reaction force receiving means 21 is provided between the bearing block 18 and the locking member 15. The reaction force receiving means 21 comprises an angle member 23 fixed to the support plate 13 with bolts 22 and 22, and a backup bolt 24 attached to the angle member 23. The backup bolt 24 has its tip shown in FIG. The bearing nut 18 is fixed to the angle member 23 by the adjusting nut 25 and the lock nut 26 while being pressed against the end surface of the bearing block 18.
In that case, when the position of the bearing block 18 is adjusted as described above, the backup bolt 24 is adjusted accordingly.
Adjusting and moving, the bolt tip always bearing block 1
It shall be contacted to 8.

Further, between the angle member 23 as the reaction force receiving means 21 and the support plate 13, a leaf spring 27,
One end of 27 is sandwiched and fixed. This leaf spring 27,
27 are provided in a pair so as to sandwich the bearing block 18 described above, and the other ends of these leaf springs 27, 27 extend to the left and right of the bearing member 18 and are positioned above the openings 17, 17 described above. At the same time, a push-up protrusion 28 is attached to the upper surfaces of the other ends of these leaf springs 27, 27.

On the other hand, a support shaft 29 passing through the bearing block 18 in the left and right directions is inserted through and supported by the above-mentioned bearing block 18.
The lever members 30 and 30 are respectively rotatable at both ends of the lever.
Can be installed. In that case, the above leaf springs 27, 27
Push-up protrusions 28, 28 of the lever member 30,
Located below 30 and contacting the lever member,
These lever members 30, 30 are pushed up and urged by the force of 7, 27 to the positions indicated by the solid lines in FIG. Also, the lever members 30, 3
0 has a substantially bifurcated shape when viewed from the side, and the upper claw 30a
Is shorter than the lower claw 30b, and a locking recess 31 is formed between both claws. Further, in the bearing block 18, a portion through which the support shaft 29 is inserted is vertically divided into two parts, and these divided pieces 18a and 18b are formed.
Are connected by an adjusting bolt / nut 39, and the gripping force with respect to the support shaft 29 can be adjusted by changing the fastening force of the split pieces 18a, 18b by the adjusting bolt / nut 39. In addition, the top surface of the bearing block 18 is in contact with the bottom surface of the trough 5 and
A stopper bolt 32 for positioning is screwed.

The cover 8 is provided with an opening 33, an upper portion of the locking member 15 and the lever members 30, 30.
34 are provided respectively, and these cover openings 33, 3 are provided.
4, the locking member 15 and the lever members 30, 30 are exposed to the outside of the cover, and the stopper bolt 3
The upper end of 2 is projected outward through the cover opening 34. Then, the first and second engaging pins 35, 36 are attached to the lower surface of the trough 5 by suspending members 37, 38 at intervals corresponding to the length connecting the locking member 15 and the lever member 30.

In the vibrator 4, as shown in FIG. 2, a bracket 40 is erected on the base plate 11, and a pair of upper and lower stopper portions 41 and 42 are provided on the bracket 40. Body frame 1 between 42
0 is passed through, and the vertical movement amount of the main body frame 10 is regulated by these stopper portions 41 and 42.

Next, the procedure for attaching and detaching the trough 5 will be described. To attach the trough 5, as shown in FIG. 5, the trough 5 is tilted so that the first engaging pin 35 passes through the cover opening 34 and the locking member. After engaging with the locking hole 14 of 15, the second engaging pin 36 is passed through the cover opening 34,
The lever members 30, 30 are pushed down by the pin 36. At this time of pushing down, the vibrator 4 supporting the main body frame 10 by the spring members 12, 12 sinks, but when the main body frame 10 hits the lower stopper portion 42 of the stopper portions 41, 42 described above, Since the above-mentioned sinking is prevented, thereafter, the above-mentioned pushing-down force reliably acts on the lever members 30, 30 via the second engagement pin 36,
The lever members 30, 30 are rotated to a position where the bottom surface of the trough 5 hits the stopper bolt 32 and is completely pushed down. In that case, the leaf springs 27, 27 that have urged the lever members 30, 30 in the pushing-up direction are bent downward through the above-described openings 17, 17 provided in the support plate 13, so that the lever members 30, Allow rotation of 30.

By the way, at the time of the completion of the pushing down, the second engagement pin 36 includes the first engagement pin 35 engaged with the locking member 15 and the support shaft 29 supporting the lever members 30, 30. The axis line A (see the explanatory diagram of FIG. 6; however, the explanatory diagram is exaggerated for ease of understanding) is lowered to a position beyond a slight angle θ and stopped. The position of the trough 5 is regulated by the stopper bolt 32. Therefore, the position of the bearing block 18 is
If the trough 5 must be pushed down with a slightly strong force when the second engagement pin 36 goes below the line A, and the gripping force of the support shaft 29 by the adjusting bolt 39 is exerted by the above-mentioned strong force. If the support shaft 29 is selected so as to move slightly to the reaction force receiving means 21 side with respect to the bearing block 18, when the second engaging pin 36 crosses the line A, the support shaft 29 moves back. The second engaging pin 36 is prevented from returning upward, and the second engaging pin 36 receives pressure in the engaging direction of the first engaging pin 35 while the locking recess 3 is formed.
It is fitted with 1. Therefore, just like a toggle mechanism, the trough 5 is fixed to the locking member 15 and the lever members 30 and 30, and even if vibration or the like is applied, the fixing is not unexpectedly released.

The trough 5 can be removed by pulling up the trough 5 in the reverse order. At that time,
The shaker 4 tries to be lifted, but the main body frame 10
Since it hits the upper stopper portion 41 and is not further raised, the second engagement pin 36 moves upward from the above-mentioned line A while rotating the lever members 30 and 30 from that point, whereby the fixation is released. Therefore, the trough 5 can be removed by tilting the trough 5 forward and pulling out the first engagement pin 35 from the locking member 15.

As described above, since the trough 5 can be attached and detached by the push-down operation and the pull-up operation for engaging the two engaging pins 35 and 36 with the locking member 15 and the lever members 30 and 30, one-touch operation can be performed. And the opening 33 of the cover 8 covering the vibration exciter 4,
Since the above installation and removal can be done through 34,
It is not necessary to remove the cover 8 for attachment and detachment, and operability is further improved.

It should be noted that when the trough 5 is attached, as shown in FIG.
As shown in FIG. 3, the rubber 43, 43 attached to the trough side is fitted into the cover openings 33, 34 to protect the cover openings 33, 34 from dust.

As another embodiment structure, contrary to the embodiment structure shown in the drawings, the direction of the locking holes 14 in the first locking member 15 is directed toward the dispersion table 3 side, and the lever member 30 is supported. The structure may be such that it rotates on the first locking member 15 side with respect to the shaft 29.

[0026]

As is apparent from the above description, according to the first aspect of the present invention, the lever member is engaged with the second engaging pin from the state in which the first engaging pin is engaged with the locking member. By pushing down, as the second engaging pin descends beyond the extension of the line connecting the first engaging pin and the support shaft of the lever member, the pin is supported in the locking recess provided in the lever member. Since the second engaging pin is tension-supported by the support shaft and is prevented from returning upward, the trough is fixed because the second engaging pin is pressure-fitted toward the shaft. Also,
If a force in the pulling direction is applied to the trough from the fixed state,
The force overcomes the fixed force and the second engaging pin is pulled up, and the trough can be removed. Therefore, the exciter can be attached / detached to / from the exciter by one-touch operation, and the operability is improved.

Further, according to the second aspect, the first and second engaging pins provided on the trough are adapted to be engaged with the locking member and the lever member through the opening of the cover. , The trough can be attached and detached without being disturbed by the cover covering the shaker. Therefore, even if the shaker or the like is covered with the cover, the cover can be attached and detached without the need to remove the cover, and the operability is further improved.

[Brief description of drawings]

FIG. 1 is a schematic view of a combination weighing device according to the present invention.

FIG. 2 is an enlarged view of a trough mounting portion in FIG.

FIG. 3 is a plan view of an essential part in FIG.

FIG. 4 is a side view of FIG.

FIG. 5 is an explanatory diagram of a trough attachment procedure.

FIG. 6 is an explanatory view of a trough fixing operation.

[Explanation of symbols]

 4 Exciter 5 Trough 8 Cover 14 Locking Hole 15 Locking Member 27 Leaf Spring 29 Spindle 30 Lever Member 31 Locking Recess 33, 34 Cover Opening 35 First Engaging Pin 36 Second Engaging Pin

Claims (2)

[Scope of utility model registration request] 1. A structure in which a trough for supplying an object to be weighed to a weighing machine is detachably mounted on a vibration exciter, wherein a locking member having a locking portion and a support are provided on an upper surface of the vibration shaker. A lever member, which is rotatably supported vertically by a shaft and is biased upward by a biasing member, is arranged at a required interval, while the lower surface of the trough is locked by the locking member. A first engagement pin that is engaged with the portion, and a second engagement pin that pushes down the lever member as the trough is pushed from the state where the first engagement pin is engaged with the locking portion, When the second engagement pin is pushed down beyond the line connecting the first engagement pin and the support shaft of the lever member,
A trough mounting structure in an automatic weighing device, wherein a locking recess is provided in a lever member so that the engaging pin is fitted while receiving pressure in the engaging direction of the first engaging pin. 2. A structure in which a trough for supplying an object to be weighed to a weighing machine is detachably mounted on a vibration exciter, and a locking member having a locking portion and a support are provided on an upper surface of the vibrator. A lever member, which is rotatably supported vertically by a shaft and is biased upward by a biasing member, is arranged at a required interval, while the lower surface of the trough is locked by the locking member. A first engagement pin that is engaged with the portion, and a second engagement pin that pushes down the lever member as the trough is pushed from the state where the first engagement pin is engaged with the locking portion, When the second engagement pin is pushed down beyond the line connecting the first engagement pin and the support shaft of the lever member,
The lever member is provided with a locking recess into which the engagement pin is fitted while receiving pressure in the engagement direction of the first engagement pin, and the vibration exciter is covered with a cover, and the first and A trough mounting structure in an automatic weighing device, which is provided with an opening for inserting the second engagement pin from the outside of the cover.