JPH0727597A - Conveyance type measuring machine - Google Patents

Abstract

PURPOSE:To smoothly move an object from an approach conveyor to a weighing conveyor in a conveyance type measuring machine carrying in the object carried out from the approach conveyor to the weighing conveyor and measuring the object while it is conveyed on the weighing conveyor. CONSTITUTION:Endless chains 45, 45 are traveled in parallel on chain tracks formed on the outer peripheries of track plates 32, 32 facing each other in parallel to form an approach conveyor 25. Endless chains 85, 85 are traveled in parallel on chain tracks formed on the outer peripheries of track plates 72, 72 facing each other in parallel to form a weighing conveyor 63. The endless chains 45, 45 on the object carry-out side of the approach conveyor 25 and the endless chains 85, 85 on the object carry-in side of the weighting conveyor 63 are overlappingly located side by side at the same height, and the object conveyed by the endless chains 45, 45 is moved onto the endless chains 85, 85 without being applied with a shock.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor type weighing machine for weighing articles during transportation.

[0002]

2. Description of the Related Art When an article is produced in a line in a factory or the like, a belt-conveying type weighing machine 10 shown in FIG. 12 has been conventionally used in order to measure the article and to sort the article on the line. Has been.

In this weighing machine, the article W carried out from the line conveyor 1 is once received by the belt 12 of the run-up conveyor 11, the speed of this article is made the same as the conveying speed of the weighing conveyor 13, and then the belt 14 of the weighing conveyor 13 is set. Bring it up. The weight of the articles carried on the weighing conveyor 13 is
By means of the weighing device 15 supporting the weighing conveyor 13,
Weighed during its transportation. The weighing device 15 outputs, as the weight of the article, the weighing value after a lapse of time necessary for the weighing value to stabilize, for example, from the timing when the article is carried into the weighing conveyor 13.

The articles weighed on the weighing conveyor 13 are
It is carried out to the succeeding line 2 and undergoes sorting and the like based on the measured value of the article.

[0005]

However, in the conventional weighing machine as described above, when trying to weigh a swayable article or an article whose content is liquid, when the article is transferred from the run-up conveyor to the weighing conveyor, Since the tip of the lower part hits the belt rotating part of the weighing conveyor and the shaking of the article itself and the contents greatly occurs, accurate weighing cannot be performed on the weighing conveyor unless the transport speed is extremely slowed. was there.

An object of the present invention is to solve this problem and to provide a conveyor type weighing machine in which swayable articles and contents can be carried onto a weighing conveyor without shocking articles such as liquids. There is.

[0007]

In order to solve the above-mentioned problems, the transport-type weighing machine of the present invention carries in an article carried out from a running conveyor onto a weighing conveyor supported by a weighing machine, In a conveyor-type weighing machine that weighs the articles while the articles are conveyed on the weighing conveyor, a plurality of endless chains or endless belts are formed on a plurality of tracks formed in parallel along the article conveyance direction. By the conveyor that runs the endless running body in parallel, the running conveyor and the weighing conveyor are respectively configured, the running conveyor and the weighing conveyor, the endless running body on the plurality of tracks on the article unloading side of the running conveyor. , The endless traveling body on the plurality of tracks on the article loading side of the weighing conveyor,
They are arranged at the same height and on the sides of each other.

[0008]

With the above construction, in the conveyor type weighing machine of the present invention, articles carried onto a plurality of endless traveling bodies that are arranged side by side on the track of the run-up conveyor are arranged in parallel. Along with the end conveyor running on the track of the article carrying side of the weighing conveyor, which is conveyed to the article carrying-out side of the run-up conveyor and is located at the same height as the endless running body on the article carrying-out side. Transfer to and weigh with a weighing machine.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 7 are diagrams showing a configuration of an article sorting apparatus 20 having a conveyor type weighing machine of the present invention as a weighing section and a main part thereof.

Above the one end side (left side in FIGS. 1 and 2) on the base 21 of the article sorting apparatus 20, the conveyor support plate 2 is provided.
The run-up conveyor 25 is supported by 2. The run-up conveyor 25 includes lower plates 26, 26 facing each other in parallel, and an upper plate 27 detachably attached to the lower plates 26, 26.
It is formed between 27 and.

Pins 2 are provided on the outer sides of the lower plates 26, 26 in the front and rear.
8 is projectingly provided, and the upper side plates 27, 27 are provided at the positions where the inverted U-shaped grooves 29 provided at the lower ends of the upper side plates 27, 27 are engaged with the pins 28, respectively, by a connecting tool 30 called a patch lock , Is fixed to the lower plate 26.

Two raceway plate support shafts 31, 31 are provided in parallel in front of and behind the upper plates 27, 27. Further, between the upper side plates 27, 27, raceway plates 32, 32 having semicircular front and rear ends and a constant width in the middle portion are supported by being penetrated by the raceway plate support shafts 31, 31. Track plate 3
2 and 32 can be loosened by screwing the raceway plate support shaft 31
On the other hand, a fixing member 33 for fixing the raceway plate 32 and the raceway plate supporting shaft 31 by making the raceway plate 32 slidable and tightening a screw is attached. The two track plates 32, 32 are tightened with screws on the respective fixing members 33,
It is fixed in advance at positions that are parallel to each other at the same height and at predetermined intervals. As shown in FIGS. 4 and 5, chain raceways 34, 34 that are continuously formed to have a predetermined thickness and a predetermined height are provided on the outer periphery of each raceway plate 32 except the lower linear portion. There is.

A drive shaft 35 is supported below the center of the track plates 32, 32 so as to be parallel to the track plate support shaft 31. The drive shaft 35 is formed in a hexagonal column shape, and the upper plate 2
Both ends are rotatably supported by bearings 36, 36 fixed to the inner walls of 7, 27, and a pulley 37 is attached to one end of a drive shaft 35 protruding to the outside of one upper plate 27. .

Two drive gear bodies 38, 38 are attached to the central portion of the drive shaft 35. The drive gear body 38 is
The center hole engages with the hexagonal outer circumference of the drive shaft 35,
A gear support 39 that rotates together with the drive sprocket 4 that is fixed so as to be concentric with the gear support 39.
0, and is mounted so as to be slidable in the length direction of the drive shaft 35. Grooves 39a, 39a are formed on the outer circumferences of the respective gear supports 39, 39 over the entire circumference, and guides whose upper end sides are fixed to the raceways 32, 32 are respectively formed in the grooves 39a, 39a. The lower ends of the plates 41, 41 are engaged with each other with a gap.

The guide plates 41, 41 are formed by the drive gear bodies 38.
The drive sprockets 40, 40 of the
It is guided so as to be located directly below the chain tracks 34, 34 of.

Idler support plates 42, 42 are mounted in front of the guide plates 41, 41. Idler shafts 43, 43 project from the lower ends of the idler support plates 42, 42 in parallel with the drive shaft 35, and idler sprockets 44, 44 are rotatably attached to the idler shafts 43, 43, respectively. Each idler sprocket 44,44
The track plates 32, 32 are supported so as to be located directly below the chain tracks 34, 34.

An endless chain 45 is provided as an endless traveling body of this conveyor between the chain track 34 of each track plate 33, the drive sprocket 40 and the idler sprocket 44.
Have been passed over each.

When the drive shaft 35 is rotationally driven, the two endless chains 45, 45 are guided by the chain tracks 34, 34 of the track plates 32, 32 and run in parallel at the same speed.
A motor 46 is arranged below the drive shaft 35. The motor 46 uses the lower plate 2 on the side where the pulley 37 is provided.
The motor shaft 46a is fixed to the inner wall of the motor 6 and protrudes outside the lower plate 26 thereof. A motor pulley 47 is attached to the motor shaft 46a, and a timing belt 48 is stretched between the motor pulley 47 and the pulley 37. Therefore, when the motor 46 is driven, the drive shaft 35 rotates and the two endless chains 4
5, 45 are driven.

The raceway plate 3 of the run-up conveyor 25
Article guides 49, 49 for guiding the articles to be carried on the endless chains 45, 45 from both sides are supported above the reference numerals 2, 32. Article guide 49, 49
Has arm plates 50, 50 extending laterally from the central portion thereof, and the long holes 5 provided in the respective arm plates 50, 50.
1, 51 and the mounting plate 5 fixed to the upper plates 27, 27
It is fastened between the two and 52 by hand-screw screws 53 and 53, and is supported above the track plates 32 and 32.

On the other hand, a measuring device 60 is fixed to the other end side (right side in FIGS. 1 and 2) on the base 31. Weighing machine 60
Supports the weighing conveyor 63 with the four shafts 61 protruding from the upper surface 60a, and detects the weight of the article carried on the weighing conveyor 63. In the weighing conveyor 63, except that the lower plates 64, 64 are supported by the weighing device 60,
It has substantially the same structure as the run-up conveyor 25.

That is, the lower plates 64, 6 of the weighing conveyor 63
Reference numeral 4 parallelly faces the lower plates 26, 26 of the run-up conveyor 25 at the same intervals, and two square bars 65, 65 are laterally provided in front and rear between them. The shaft 61 of the measuring device 60 is nut-fastened to the square rods 65, 65.

Pins 68 for locking the upper plates 67, 67 project from the front and rear sides of the lower plates 64, 64. The upper plates 67, 67 have an inverted U-shape provided at their lower ends. It is fixed to the lower plate 64 by the connector 30 at the position where the groove 69 of each of the pins is engaged with each pin 68.

Before and after the inside of the upper side plates 64, 64, track plate support shafts 71, 71 are laid in parallel and at the same height.
With these two raceway plate support shafts 71, 71, the raceway plate 7
2, 72 are parallel to each other and the raceway plate 32 of the run-up conveyor 25,
It is supported at the same height as 32.

The two raceway plates 72, 72 are fixed to the raceway plate support shafts 71, 71 by fixing members 73 so that the distance between them is slightly smaller than the space between the raceway plates of the run-up conveyor 25. When viewed from the side, the outer surface of the semicircular portion on the (article carry-in side) and the inner surface of the semicircular portion on the rear end sides (article carry-out side) of the run-up conveyors 25 (article carry-out side) are slightly separated. Positioned to completely overlap.

Therefore, the straight line portions of the chain raceways 74, 74 formed on the outer circumferences of the raceway plates 72, 72 and the straight line portions of the chain raceways 34, 34 of the run-up conveyor 25 should be substantially straight when viewed from the side. Therefore, the height of the endless chain traveling on the straight line portion of each chain track is also the same at this overlapping portion.

As shown in FIG. 6, the drive shaft 75 of the weighing conveyor 63 is disposed below the track plate support shaft 71 on the rear side, and both ends of the drive shaft 75 are mounted on the upper plate 6 via bearings 76, 76.
A pulley 77 is attached to one end side of the upper plate 67, which is supported by the first and second upper plates 67 and 67.

The drive gear bodies 78, 78 slidably attached to the central portion of the drive shaft 75, have grooves 79a on the outer periphery thereof.
And the lower ends of the guide plates 81, 81 attached to the raceway plates 72, 72, respectively, are formed by the gear support 79 and the drive sprocket 80 concentrically fixed to the gear support 79. Engages with the groove 79a of the drive sprocket 80, 80
It is set to be right under 4, 74.

Further, as shown in FIG. 7, each raceway plate 72, 7
The idler shafts 83, 83 of the idler support plates 82, 82 attached to the idler sprocket 84, 8
4 is rotatably supported at a position directly below the chain tracks 74, 74.

Chain track 74, drive sprocket 80
An endless chain 85 is stretched between the idler sprocket 84 and the idler sprocket 84. The two endless chains 85, 85 are guided by the chain tracks 74, 74 when the drive shaft 75 is rotationally driven. Run side by side in the same direction.

A motor 86 disposed below the drive shaft 75
Is attached to one of the lower plates 64, and the motor pulley 87 and the pulley 77 attached to the motor shaft 86a thereof.
A timing belt 88 is stretched between and. In addition, the endless chain 85 of the weighing conveyor 63,
The traveling speed of 85 is the endless chain 4 of the run-up conveyor 25.
It is set to be equal to the traveling speed of 5, 45.

On both sides of the overlap portion of the run-up conveyor 25 and the weighing conveyor 63, a projector 85 and a light receiver 8 for detecting the timing of loading the article into the weighing conveyor 63.
6 are arranged so as to face each other. The light projector 90 and the light receiver 91 are the sensor support member 9 provided upright on the base 21.
The light from the projector 90 is supported by the reference numerals 2 and 92 at a height position where it passes above the center of the overlapping portion and is received by the light receiver 91.

A control housing 95 is erected on the rear side of the base 21. In the control casing 95, the light receiving signal of the light receiver 91 and the weighing signal from the weighing device 60 are received to detect the weight of the article carried on the weighing conveyor, and the detected weight is previously detected from the operation panel 96. A control unit (not shown) that determines whether or not the weight is within the input weight range is stored. The determination result by the control unit is sent as a sorting signal to a subsequent sorting machine (not shown), and the weighing conveyor 63
The articles that have passed through are sorted according to this sorting signal.

Next, the operation of the weight sorter 20 will be described. As shown in FIG. 8, the article W carried in from the production line 1 to the run-up conveyor 25 has two endless chains 45 running in parallel at the same speed on the chain tracks 34, 34 of the track plates 32, 32. It rides on 45 and is conveyed toward the weighing conveyor 63 while being guided by article guides 49, 49 on both sides.

The articles W conveyed to the last end of the linear portion of the chain track of the track plates 32, 32 are weighed by the weighing conveyor 63.
Ride on the endless chains 85, 85 running on the extreme ends of the straight portions of the side track plates 72, 72. At this time, the endless chains 85, 85 are traveling at the same speed as the endless chains 45, 45 of the run-up conveyor 25, and
Since the heights of the two articles are the same and they overlap each other when viewed from the side, they do not cause a shock due to transfer to the article W, and the article W passes as if on one conveyor. As shown in FIG. Therefore, even when the content of the article W is a liquid, the liquid inside the article does not shake on the weighing conveyor 63.

During this transfer, the light from the light projector 90 is blocked by the article, and the light reception signal of the light receiver 91 changes. The weighing signal of the weighing device 60 increases substantially linearly during the transfer period from when the tip of the article W rides on the straight portion of the endless chains 85, 85 to when the rear end of the article W rides on the straight portion. , Becomes stable after a predetermined stabilization time has elapsed. As described above, the stabilization time can be extremely short because there is almost no transfer shock to the article. The control unit detects the weight of the article from the weighing signal during a certain period after the time required for the weighing signal to stabilize (total of the transfer time and the stabilization time) has elapsed from the time when the light receiving signal changed, and Select by weight.

The articles carried into the weighing conveyor 63 and weighed are carried out to the subsequent line and sorted.

In this way, the run-up conveyor 25 is successively used.
The articles carried in are accurately weighed on the weighing conveyor 63, carried out to the subsequent line, and sorted based on the weighing result.

In this embodiment, the run-up conveyor 25
And the track plate spacing of the weighing conveyor 63 can be arbitrarily changed within the range of the side plate interval, and further, with the movement of the track plate,
Since the drive sprocket and the idler sprocket also follow and move, it is possible to deal with a change in the weighing item with a simple operation.

[0039]

[Other Embodiments] In the above embodiment, the tracks of the endless chains 85, 85 of the weighing conveyor 63 are arranged inside the tracks of the two endless chains 45, 45 of the run-up conveyor 25. As shown in (a), the orbits of the endless chains 85, 85 of the weighing conveyor 63 are the run-up conveyor 2
The two endless chains 45 of No. 5 are overlapped so as to be outside of the track, or, as shown in (b) of FIG.
You may make it shift in parallel.

In the above embodiment, two endless chains are used as the endless running body, but a plurality of endless belts such as timing belts may be used.

Further, the method of forming the track of the endless traveling body is not limited to the above-mentioned embodiment, and various modifications can be made. For example, the track plate 32 '(72') shown in FIG.
Groove-shaped chain track 40 '(7
0 ') may guide the running of the endless chain 45 (85).

[0042]

As described above, in the conveyor type weighing machine of the present invention, the run-up conveyor and the weighing conveyor each have a structure in which a plurality of endless traveling bodies are run in parallel,
Since the endless running body on the article carrying-out side of the run-up conveyor and the endless running body on the article carrying-in side of the weighing conveyor are overlapped so that they are located laterally to each other at the same height,
The articles carried out from the run-up conveyor can be transferred onto the weighing conveyor very smoothly without being shocked.

Therefore, accurate and high-speed weighing can be performed even for articles that easily fall over or whose contents are liquid.

[Brief description of drawings]

FIG. 1 is a schematic plan view of an embodiment.

FIG. 2 is a schematic front view of one embodiment.

FIG. 3 is a schematic side view of an embodiment as seen from the weighing conveyor side.

FIG. 4 is an enlarged sectional view taken along line AA of FIG.

5 is an enlarged sectional view taken along line BB of FIG.

6 is an enlarged cross-sectional view taken along line CC of FIG.

FIG. 7 is an enlarged sectional view taken along line DD of FIG.

FIG. 8 is a schematic plan view for explaining the operation of the embodiment.

FIG. 9 is a schematic side view for explaining the operation of the embodiment.

FIG. 10 is a schematic plan view showing another embodiment of the present invention.

FIG. 11 is a cross-sectional view of essential parts showing another embodiment of the present invention.

FIG. 12 is a schematic view showing a conventional device.

[Explanation of symbols]

 20 weight sorter 21 base 25 run-up conveyor 31, 71 raceway plate support shaft 32, 72 raceway plate 34, 74 chain raceway 35, 75 drive shaft 40, 80 drive sprocket 43, 83 idler sprocket 45, 85 endless chain 46, 86 Motor 60 Measuring device 63 Weighing conveyor

Claims (1)

[Claims] 1. A carrying type weighing for carrying in an article carried out from a run-up conveyor onto a weighing conveyor supported by a weighing machine, and weighing the article while the article is carried on the weighing conveyor. In the machine, on the plurality of orbits formed in parallel along the article transport direction, the runner conveyor and the weighing conveyor are respectively configured by a conveyor that runs a plurality of endless running bodies composed of endless chains or endless belts in parallel. Then, the running conveyor and the weighing conveyor, the endless running body on the plurality of tracks on the article unloading side of the runway conveyor, and the endless running body on the plurality of tracks on the article loading side of the weighing conveyor. Are arranged at the same height and on the sides of each other.