JPH0310386B2 - - Google Patents

Description

Detailed Description of the Invention [Industrial Application Field] The present invention combines a traveling body with a saucer that travels and rotates and a weighing device to weigh the weight of articles on the traveling body with a saucer and sort the articles according to the weighed weight. This invention relates to a traveling body with a saucer for a sorting machine.

[Prior art] Conventionally, this type of weight sorting machine was
The ones shown in Japanese Utility Model Publication No. 14026/1983, and various other similar ones are used as known ones.

All of the tray-equipped traveling bodies of these conventionally known weight sorters are attached to one link of a link plate of a conveyor chain above the chain.

[Problems to be Solved by the Invention] Therefore, as shown in FIGS. 1 to 3, conventionally known traveling bodies with trays have a high center of gravity or are biased toward one another, so that the conveyor does not move in the traveling direction of the conveyor when traveling. Since pitching vibration (vertical vibration) occurs and stability is poor, the weighing accuracy of the weight sorter is poor. That is,
In the conventionally known ones, the size of the saucer exceeds 120 mm, whereas the size of the link plate of the chain to which the traveling body with saucer is attached (chain pitch) is generally 25.4 to 38.1 mm, and the size of the saucer exceeds 120 mm. Conventionally known traveling bodies with a saucer are
When running, pitching vibrations (vertical vibrations) occur in the conveyor's traveling direction, making it impossible to run stably, which has the disadvantage of poor weighing accuracy of the weight sorter.

The present invention eliminates this drawback, allows for stable running, improves the weighing accuracy of the weight sorter, and also enables smooth rotation at the start and end of the conveyor and allows running with a receiving tray. To provide a traveling body with a saucer for a weight sorter whose body can be easily replaced.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a system in which a large number of traveling bodies with trays attached to a conveyor chain that travels and rotates slides on a weighing device to collect articles placed on the trays. A traveling body with a saucer for a weight sorter that sorts by size of weight has mounting portions on the front and back that are pivotally supported on the conveyor chain, and the rear mounting portion has a rearward opening through which a mounting shaft can slide in the front and back direction. Horizontal U
The structure is a tray traveling body of a weight sorting machine, which has an underframe having a letter-shaped groove and whose front and rear mounting portions are pivotally supported by different links of the conveyor chain. By pivotally supporting different links of the conveyor chain at the front and rear mounting parts, pitching vibration in the traveling direction of the conveyor is prevented when the traveling body with a saucer is running, and the traveling body with a saucer can run stably. In addition to improving the weighing accuracy of the weight sorter, the mounting part on the rear side of the underframe has a horizontal U-shaped groove with a rearward opening that allows the mounting shaft to slide forward and backward. Therefore, when the traveling body with a saucer can rotate smoothly at the starting end and the terminal end of the conveyor, and when replacing the traveling body with a saucer, the traveling body with a saucer and the conveyor chain can be removed and installed by removing and installing only the front mounting shaft. This allows for easy replacement.

[Example] Hereinafter, figures showing examples of the present invention will be described.

1 is the sorting machine frame, 2 is the chain rail, 3
is a conveyor chain that runs and rotates endlessly.

The sorting machine frame 1 is formed according to various types of sorting machines, such as a linear conveyor type, a circular type, and an elliptical type that runs and rotates on a flat surface.

4 is a traveling body with a saucer 6 according to the present invention, which is constructed as follows, with an underframe 5 as a base, a saucer 6, a traveling body 7 with a saucer, a sliding tongue piece 8, and upper and lower stays 9, 9 as main components. has been done.

The underframe 5 has approximately the same size as the planar shape of the saucer 6, and is formed into a square frame shape as shown in FIG. Projections 5b and 5c are formed, and fixed fulcrums 10 and 10a are provided respectively. The left and right measurement frames 5d and 5e of the underframe 5 are provided with a towing attachment portion 11 on the front side and a horizontal holding attachment portion 12 on the rear side. The traction attachment part 11 is attached to the conveyor chain 3
It is rotatably supported by a front mounting bracket 13 as a front mounting shaft provided on the link plate. The horizontal holding mounting part 12 is attached to the front mounting bracket 1.
3, and is pivoted by a rear mounting bracket 13a as a rear mounting shaft provided on the ring plate of the conveyor chain 3 at a distance of several links from the conveyor chain 3. Horizontal U-shaped groove 1 with rearward opening that can slide forward and backward.
2a is formed. Therefore, when replacing the traveling body 4, the rear mounting bracket 13a can be attached and detached from the opening of this horizontal U-shaped groove 12a, so the front mounting bracket 13a can be attached and removed without removing the rear mounting bracket 13a from the conveyor chain 3. It is designed so that it can be replaced by attaching and removing only the metal fittings 13. Furthermore, since the mounting bracket 13a can slide in the longitudinal direction within this horizontal U-shaped groove 12a, when the traveling body 4 rotates and returns on the sprockets at the start and end ends of the conveyor, the conveyor chain 3 is shaped like an arc. Even if the straight distance between the front and rear mounting brackets 13a, 13a decreases due to the change in size, smooth rotation is possible without any problem. Furthermore, since the distance between the front traction attachment part 11 and the rear horizontal holding attachment part 12 is widened by several times the chain pitch within the range of the size of the saucer 6, the underframe 5 is The conveyor is comfortable to sit on, and even when running at high speeds, pitching vibrations do not occur in the direction of travel of the conveyor, and the conveyor runs stably. In addition, the rear horizontal frame 5f of the underframe 5
A base is formed on which a cam 14 for tilting the saucer 6 is attached.

The saucer support member 7 has floating fulcrums 15, 15, respectively, in the vertical middle portion thereof, at positions symmetrical to the fixed fulcrums 10, 10a of the underframe 5, and extends vertically through the central portion of the underframe 5. ing. This saucer support member 7 is supported at the fixed fulcrum 1 by the stays 9, 9.
0 and 10a and floating supports 15 and 15 are connected at the top and bottom, respectively, to form a parallelogram link mechanism, and a running roller 16 and a sliding tongue piece 8 are attached to the lower part. The traveling rollers 16 move the tray support member 7 to the stay 9,
Cororail 17 to support it at a height where 9 is horizontal.
It's almost like you're running on top of it. The sliding tongue piece 8 is horizontally attached to the side opposite to the roller 16,
It is formed into a thin plate shape with the front end sharpened like a knife blade, and is used as the measuring rail 2 of the balance 19, which will be described later.
4. It is something that you skate on.

The saucer 6 has stays 9, 9 in the center of the underframe 5.
It is attached to the upper part of the saucer support member 7 which is connected by the saucer pin 18 so as to be tiltable to one side, and is held horizontally during the normal transfer process when the stays 9, 9 are horizontal, providing stable load support. It constitutes an article mounting section of the traveling body 4 having a mechanism, that is, a roberval mechanism. The above is a description of the traveling body 4 with a saucer 6 according to the present invention.

Reference numeral 19 denotes a balance scale as a weighing device, which includes a balance 20, a stay 21, a fulcrum 22, and three vertical members 23, 23a, provided at a point of emphasis 22a, and a point of force 22b.
23b as the main components, a measuring rail 24 is attached to the upper part of the emphasis vertical member 23a, a weight pan 25 is attached to the emphasis vertical member 23b, and the fulcrum vertical member 23 is mounted on a base with a stand 26. It is supported and fixed on 27 to constitute a balance type balance scale. Each vertical member 23, 23a of the fulcrum 22, the point of emphasis 22a, and the point of effort 22b,
By using the same member for 23b, the accuracy of the balance 20 is improved by eliminating variations in the vertical distance h between the stays 21.

The distance 1 between the fulcrum 22 and the point 22a of the balance 20 and the distance 1 between the fulcrum 22 and the fulcrum 22b are the same arm length, and the upper and lower stays 9, which support the tray support member 7 of the traveling body 4, The arm lengths 1 and 9 are the same length on a one-to-one basis.

A stopper 28 is provided below the force point side of the balance 20 to keep the balance 20 horizontal and stop the vertical member 23b from descending to prevent the measurement rail 24 from rising above a predetermined height. Reference numeral 29 denotes a spring, which is loaded onto the measuring rail 24 at the point 22a via the sliding tongue 8, and the balance 20
This is to speed up the restoration speed when the balance 20 is restored after the load is removed after it has been tilted, and to prevent bouncing vibration of the balance 20. Furthermore, this spring 2
Reference numeral 9 also has the function of balancing the weight pan 25 of the balance scale 19 so that the weight becomes zero when the tray 6 of the traveling body 4 is empty.

The balance scale 19 configured as described above is placed at the lower part of the traveling path of the traveling body 4 which is attached at equal intervals to the conveyor chain 3 which runs and rotates endlessly, and the sliding tongue piece 8 protruding below the center of the traveling body 4 , and slide on the measurement rail 24 of the balance scale 19 in combination to form a weighing mechanism.

The operation of the weighing mechanism described above will be explained below.
For example, when sorting articles into those whose weight exceeds 150 g and those whose weight is less than 150 g, if the sorting weight is 150 g, the weight pan 25 of the balance scale 19
Put a 150g weight in the. On the other hand, when articles to be sorted are placed on the tray 6 of the traveling body 4 attached to the conveyor chain 3 and the traveling body 4 is run, when the sliding tongue piece 8 comes on the measuring rail 24, the weight of the article and the weight of the weight are measured. Compare the weight using a balance (check the balance). If the weight of the item is 152g, focus 22a
The _force P (weight weight
150 g), the balance 20 is unbalanced and the balance 20 is tilted.The measurement rail 24 sinks, and the sliding tongue 8 is guided below the separate needle 30 provided on the exit side of the measurement rail 24. The sliding tongue piece 8 guided below the separate needle 30 loses its support, so the saucer support member 7 falls downward in a vertical position, and the saucer 6 moves to one side along the shape of the cam 14 with the saucer pin 18 as a fulcrum. Tilts to eject items. On the other hand, if the weight of the article is 149 g, the load W ₂ applied to the point 22a is the force P applied to the point 22a.
Because it is smaller, the sliding tongue piece 8 passes directly over the separate needle 30 without tilting the balance 20.
The receiving tray 6 of the traveling body 4 is held horizontally, and the articles are not discharged but pass through as they are. The sorting mechanism using the separate needles 30 is similar to the known one described above.

If the item of goods changes and the sorting standard, that is, the sorting weight changes to, for example, 165g, if you add 15g to the weight pan to make a 165g weight, the goods over 167g will be discharged, and the goods under 164g will be discarded, in the same way as above. Passes through without being ejected.

[Operations and Effects of the Invention] As described above, the present invention provides a weight sorting system in which a large number of traveling bodies with trays attached to a rotating conveyor chain slide on a weighing device, and the articles placed on the trays are sorted according to their weight. A running body with a saucer for a machine has mounting parts on the front and back that are pivotally supported on the conveyor chain, and the rear mounting part has a horizontal U-shaped groove with a rearward opening into which the mounting shaft can slide. Since this is a traveling body with a tray for a weight sorter, which has an underframe that is pivotally supported by different links of the conveyor chain at the mounting part, the underframe is pivotally supported by different links of the conveyor chain at the front and rear mounting parts of the conveyor. Since the conveyor is pulled by a chain and travels, pitching vibration (vertical vibration) in the traveling direction of the conveyor does not occur in the underframe during travel, allowing the traveling body with a saucer to run stably, thereby improving the weighing accuracy of the weight sorter. In addition, due to the horizontal U-shaped groove with a rearward opening provided in the attachment part on the rear side of the underframe, the traveling body with a tray can rotate smoothly at the start and end of the conveyor, and the tray can be rotated smoothly at the start and end of the conveyor. When replacing the attached traveling body, it can be done by removing and installing only the front mounting shaft, which has the effect of making the replacement easy.

[Brief explanation of drawings]

Figures 1, 2, and 3 are explanatory views showing conventional saucer support mechanisms with different shapes, Figures 4A and 4B are illustrations of conventional saucer tilting mechanisms, and Figures 5 and below all show examples of the present invention. 5 is a side view of the traveling body, FIG. 6 is a cross-sectional explanatory diagram of the combination of the traveling body and balance scale, FIG. 7 is a cross-sectional view of the discharge part, and FIG. 8 is a cross-sectional view of the traveling body and balance scale. An explanatory diagram of the Roberval mechanism and the lever ratio displayed by rotating the combination direction by 90 degrees, Fig. 9 is a perspective view of the underframe, Fig. 10 is a perspective view of the saucer support member, Fig. 1
FIG. 1 shows an explanatory view of the mounting portion of the underframe at the end of the conveyor. 1... Frame, 2... Chain rail, 3...
Conveyor chain, 4... Running body, 5... Underframe, 6
... saucer, 7... saucer support member, 8... sliding tongue piece, 9... stay, 10... fixed fulcrum, 11...
Towing attachment part, 12...Horizontal maintenance attachment part, 12
a... Horizontal U-shaped groove, 13, 13a... Mounting bracket as mounting shaft, 14... Cam, 15... Floating fulcrum, 16... Roller, 17... Roller rail, 18...
...Saucer pin, 19... Balance scale, 20... Balance, 21... Stay, 22... Fulcrum, 22a...
Emphasis, 22b... Point of emphasis, 23... Vertical member, 24
... Measuring rail, 25 ... Weight pan, 26 ... Stand, 27 ... Base, 28 ... Stopper, 29
...Spring, 30...Separate needle, h...
Vertical distance between the balance and the stay, l... Arm length, W...
Load, P...force.

Claims (1)

[Claims] 1. In the traveling bodies with trays of a weight sorting machine, a large number of traveling bodies with saucers attached to a rotating conveyor chain slide on a weighing device, and the articles placed on the trays are sorted according to their weight. It has front and rear mounting parts to support the conveyor chain, and the rear mounting part has a horizontal U-shaped groove with a rearward opening in which the mounting shaft can slide in the front and rear directions, and the front and rear mounting parts are attached to different links of the conveyor chain. A traveling body with a saucer for a weight sorter, characterized by comprising an underframe that is pivotally supported on.