JPH0514182Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field of the invention> The invention temporarily stores objects to be weighed that are selected in combination and discharged from a combination hopper through a collection chute, and is discharged at a predetermined timing. The present invention relates to a combination weighing device equipped with a discharge hopper.

<Prior Art> In this type of combination weighing device, as shown in FIG. The objects to be weighed in the selected combination hopper 2 are stored in the discharge hopper 4 provided below the collection chute 3 via the collection chute 3, and for example, the timing of transport of the packaging conveyor 5 provided below the discharge hopper 4 The object to be weighed is discharged at the same time.

In addition, in this type of combination weighing device, the accuracy and efficiency of combination selection increases as the number of combinations of objects to be weighed increases. Disposed above the periphery, the discharge hopper 4 is therefore conventionally mounted centrally at the bottom of the combination metering device.

Therefore, as mentioned above, when cleaning the discharge hopper installed at the center of the bottom of the combination weighing device, it is necessary to crawl under the combination weighing device and inspect the discharge hopper in a narrow space.
Removal was a very complicated and dangerous task.

For this reason, in the conventional Utility Model Application Publication No. 58-47137,
In order to easily and safely perform tasks such as cleaning the discharge hopper without having to go under the collection chute, the pedestal on which the discharge hopper is attached can be removed from under the collection chute along with the discharge hopper opening/closing drive mechanism. A combination weighing device that can be pulled out laterally has been proposed.

<Problems to be solved by the present invention> However, in the conventional combination weighing device of Utility Model Application Publication No. 58-47137, when the discharge hopper needs to be cleaned, both the pedestal and the opening/closing drive mechanism are pulled out together with the discharge hopper. There were problems in that it was difficult to handle and cleaning the discharge hopper was also difficult.

The present invention aims to provide a combination weighing device that solves these problems.

<One Embodiment of the Present Invention> (FIGS. 1 to 3) An embodiment of the present invention will be described below based on the drawings.

FIG. 1 shows an embodiment of a discharge hopper device of a combination weighing device to which the present invention is applied, and FIG. 2 is a schematic diagram showing the main parts thereof.

In the figure, 1 is the base of the combination weighing device, 1a
is the bottom of the base 1, 2 is a collective chute arranged approximately in the center of the base 1, and formed in the shape of a truncated cone; 2a;
is the collective chute 2 outlet. Bottom 1 of base 1
a, the respective front end portions 4a, 5a and rear end portion 4 are attached by L-shaped mounting plates 3, 3, 3, 3.
two rail guide plates 4 supported by b, 5b;
5 are installed in parallel at predetermined intervals.

The rail guide plates 4 and 5 have a substantially U-shaped cross section, their lower ends 4c and 5c are bent downward, and are arranged so that their opening surfaces 4b and 5d face each other. There is.

Square bar-shaped rails 6, 7 having approximately the same length as the rail guide plates 4, 5 are attached to the lower ends 4c, 5c of the rail guide plates 4, 5 along the lower ends 4c, 5c. .

A positioning stopper 8 is attached to the inside of the front end 7a of one of the rails 7. The positioning stopper 8 has an elastic return force toward the inside of the rail 7, has an open front end 8a, and has a crank-shaped bend 8b. ing.

A cushion ring 9 that projects inward is attached to the rear end 7b of the rail 7 via a shaft 9b.

On the other hand, the lower part of the collecting chute 2 has a square hole 10a that coincides with the outlet 2a of the collecting chute 2,
A pedestal 10 is disposed in which side portions 10b, 10c and a back portion 10d are bent downward. Guide plates 11 and 12 for inserting the discharge hopper 13 are attached to the lower surface of the pedestal 10 along both sides of the square hole 10a.

Below the square hole 10a of the pedestal 10, the square hole 1
A discharge hopper 13 having an input port 13a that substantially coincides with the input port 13a is detachably attached by inserting extension pieces 13b and 13c extending from the input port 13a on both sides into the guide plates 11 and 12. There is.

Further, a spring plate 14 having an upwardly protruding pin 14a and having an upward elastic return force is attached below one of the guide plates 12. This pin 1
4a is inserted through the hole 12a of the guide plate 12 and comes into contact with the front end of one of the extending pieces 13c of the discharge hopper 13, thereby preventing the inserted discharge hopper 13 from moving. Note that 15 is a stopper that receives the spring plate 14 below.

Furthermore, a pair of shutters 16 and 17 are rotatably attached to the side wall of the discharge hopper 13 via a fixed shaft 18. A crank (shutter opening/closing mechanism) 19 rotatably connected to the
20 and 21 are attached.

An end portion 19a of the crank 19 is rotatably attached to the shutter 17 via a fixed shaft 19b.
Similarly, the end 21a of the crank 21 has a fixed shaft 21b.
It is rotatably attached to the shutter 16 via. Further, the central portion 20a of the crank 20 is rotatably attached to a fixed shaft 20b.

A rotating arm (output shaft of the opening/closing drive device 23) 2 is rotatably and detachably attached to the fixed shaft 19b.
One end 22a of the rotating arm 22 is attached to the eccentric shaft 24a of the rotary plate 24 of the opening/closing drive device 23 attached to the pedestal 10 adjacent to the discharge hopper 13. It is attached via a joint 25 so as to be rotatable in all directions.

Cylindrical rollers A26, 2 having rotational axes in the outward direction are provided at the front and rear of one side 10b of the pedestal 10.
Similarly, a roller A is attached to an extension plate 27 that extends rearward along this side portion 10b and is bent toward the rear surface portion 10d.
26 is attached so that the rotation axis is directed outward.

A similar roller A is also provided at the front end of the other side 10c.
26 is attached, and a roller B28 having a groove in the center is attached to the rear end.

The rollers A26 and B28 attached to both sides 10b and 10c of the frame 10 are supported on the rails 6 and 7, and thereby,
The pedestal 10 is movable back and forth along both rails.

Further, a handle shaft fixing plate 30 extending downward is attached to the rear surface 10d of the pedestal 10. A handle plate 35 attached to the base is inserted into the handle shaft fixing plate 30, and a handle 31 is arranged parallel to the rail 7 and formed in a T-shape.
The tip of the handle shaft 32 is rotatably attached.

A handle lever 33 is attached to the front end of the handle 31.
is formed in a T-shape, and the handle lever 33
A handle stopper 34 that is perpendicular to the handle shaft 32 is protruded on the handle shaft 32 slightly behind the handle shaft 32 .

The handle plate 35 is formed into an L-shape (in FIG. 1, the upper center of the horizontal part is partially cut away), and one end of the handle plate 35 is attached to the base 1 so that the handle 31 can be held horizontally and slidably. An insertion hole 35a for movably supporting the handle, a locking plate 35b for removably locking the handle stopper 34, and a front end for releasing the positioning stopper 8 attached to the rail 7. Square hole 35c from which part 8a protrudes
It is equipped with

A housing 40 is supported and fixed above the collection chute 2 by a plurality of supports (not shown) from the base 1, and on the outer periphery of the housing 40, there is a casing 40 located above the periphery of the collection chute 2. A plurality of weighing hoppers 41 are attached as shown in FIG. Further, the housing 40 is provided with a plurality of scales (not shown) corresponding to each of the weighing hoppers 41 in order to weigh the objects to be weighed that are supplied to the weighing hoppers 41.

<Operation of the above embodiment> (Figures 3 and 4) Next, the operation of the above embodiment will be explained.

During the weighing operation, the handle stopper 34 of the gantry 10 is locked to the locking plate 35b of the handle plate 35, and the cushion ring 9 of the rail 7 is in contact with the handle shaft fixing plate 30. , the discharge port 2a of the collection chute 2 and the input port 13a of the discharge hopper 13 are fixed at a matching position.

Therefore, the objects to be weighed supplied to the weighing hopper 41 are weighed by the weighing device in the housing 40, and combinations are selected based on this weighed value.
The object to be weighed discharged from the selected weighing hopper 41 is stored in the discharge hopper 13 via the collecting chute 2, and the opening/closing drive device 23 is operated in synchronization with a packaging conveyor (not shown) or the like. The shutters 16 and 17 of the discharge hopper 13 open and close, and the objects to be weighed are discharged one after another.

Here, for example, if the discharge hopper 13 becomes dirty and needs to be cleaned, the handle lever 33 is rotated clockwise as shown in FIG. Release the stopper.

Next, by pulling out the handle 31 toward the front side of the combination weighing device, the pedestal 10 is moved on the rails 6 and 7 and pulled out forward. At this time,
When the side end of the handle shaft fixing plate 30 of the frame 10 on the rail 7 side slides while pressing the positioning stopper 8 and reaches the bent part 8b, the elastic return force of the positioning stopper 8 causes the handle to be fixed. The bent portion 8b moves to the rear of the shaft fixing plate 30.

As a result, as shown in FIG. 3b, the base 1
0 is pulled out from the base 1 and prevented from moving backward.
The rollers A26 attached to the front sides 10b and 10c of the rails 6 and 7 are separated from the rails 6 and 7.
The stand 10 is positioned in front of the extension plate 27, and is supported horizontally and pulled out outside the base by a roller A 26 attached to the extension plate 27 and a handle shaft 32 attached to a handle shaft fixing plate 30.

Next, the end 1 of the crank 19 of the discharge hopper 13
The rotation arm 22, which is the output shaft of the opening/closing drive device 23 attached to the opening/closing drive device 9a, is disconnected from the opening/closing drive device 23, and as shown in FIG.
When the spring plate 14 is pressed downward until it comes into contact with the stopper 15, one of the extending pieces 13 of the discharge hopper 13
c The pin 14a that was in contact with the front end retreats downward from the hole 12a, and the discharge hopper 13 can be pulled out from the pedestal 10, and the discharge hopper 13 is pulled out forward.

Thereby, the discharge hopper 13 can be removed from the pedestal 10 and, for example, cleaned.

After cleaning the discharge hopper 13, press the spring plate 14 downward so that the tip of the pin 14a is below the hole 12a of the guide plate 12.
When both the extension pieces 13b and 13c are inserted along the guide plates 11 and 12, and then the spring plate 14 is released, the pin 14a protrudes upward from the hole 12a and the extension piece 1
It is inserted in contact with the end of 3c. Next, the end 22a of the rotating arm 22 is rotatably attached to the fixed shaft 19b, and then the front end 8a of the positioning stopper 8 protruding from the square hole 35c of the handle plate 35 is pressed outward. The bent portion 8b is disengaged from the handle shaft fixing plate 30, and the handle lever 33 is pushed backward until the handle shaft fixing plate 30 comes into contact with the cushion ring 9 of the rail 7.

Then, rotate the handle lever 33 counterclockwise to move the handle stopper 34 onto the handle plate 3.
5 is locked to the locking plate 35b.

In this way, the discharge hopper 13 inserted into the pedestal 10 is again placed below the collection chute opening 2a.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and for example, the method of attaching and detaching the discharge hopper, the method of pulling it out, the method of opening and closing the discharge hopper, etc. can be modified and applied in various ways without departing from the gist of the present invention. be.

<Effects of the present invention> As is clear from the above explanation, in the combination weighing device of the present invention, in the cleaning work of the discharge hopper, the discharge hopper and the opening/closing drive mechanism are not installed as in the conventional Utility Model Application Publication No. 58-47137. Instead of pulling out the entire pedestal 10, when the pedestal 10 is pulled out to a certain position, the output shaft of the opening/closing drive device 23 can be removed from the discharge hopper, and only the discharge hopper 13 can be further pulled out from the pedestal 10 in the same direction. Therefore, cleaning work of the discharge hopper 13 becomes extremely easy, and if the discharge hopper 13 is pulled out and removed from the pedestal 10, steam sterilization, cleaning and sterilization of the discharge hopper 13 becomes easy.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of the combination weighing device of the present invention, FIG. 2 is a schematic perspective view showing the main parts of FIG. 1, and FIGS. 3a and 3. b is a schematic top view showing the operation of one embodiment, FIG. 4 is a schematic perspective view showing the operation of one embodiment, and FIG. 5 is a basic structure of a general combination weighing device equipped with a discharge hopper. It is a schematic diagram. 1... Base, 2... Group shot, 4, 5...
Rail guide plate, 6, 7...Rail, 8...Positioning stopper, 9...Cushion ring, 10...
... mount, 13 ... discharge hopper, 14 ... spring plate,
16, 17... Shyatsuta, 19, 20, 21...
Crank, 22...Rotating arm, 23...Opening/closing drive device, 26...Roller A, 28...Roller B,
30...Handle shaft fixing plate, 31...Handle,
35...Handle plate.

Claims (1)

[Claims for Utility Model Registration] A plurality of combination hoppers 41, 41, ... and a base 1 below the plurality of combination hoppers.
The objects to be weighed that are dropped and discharged from the selected combination hopper are collected and discharged from the discharge port 2.
A collection chute 2 for dropping and discharging from a, a discharge hopper 13 and an opening/closing drive device 23 for opening and closing the shutter of the discharge hopper are attached,
A combination weighing device comprising a pedestal 10 attached to the base 1 so as to be freely drawn out in the lateral direction from a position below the discharge port 2a of the collection chute 2 to the outside of the base 1, the opening/closing drive device 23 The connecting portion between the output shaft of the output shaft and the shutter mechanism of the ejection hopper 13 is made removable, and the ejection hopper 13 is attached to the pedestal so that it can be freely drawn out in the same direction as the drawing direction of the pedestal 10, and further, A regulating member for regulating the withdrawal of the discharge hopper 13 from the pedestal 10 is provided, and the output shaft of the opening/closing drive device 23 is removed from the shutter mechanism of the discharge hopper 13 to release the regulation of the regulating member. A combination weighing device characterized in that only the discharge hopper 13 can be further pulled out and taken out from the pedestal 10 in a state where it is pulled out to the outside of the base 1.