JP3311593B2 - Shoot type weight sorter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weight sorter which weighs a work (object to be weighed) dropped from above and sorts the work by weight. The present invention relates to a weight sorter for measuring the weight of a bagged workpiece received by a chute.

[0002]

2. Description of the Related Art Conventionally, weight sorting of a work packed in a bag by a vertical pillow type packing machine is generally performed after the work dropped from the packing machine is lifted to a certain height by a belt conveyor. Weight sorter.

[0003] This will be described with reference to FIG.

FIG. 12 is a schematic diagram showing a conventional combination system of a vertical pillow type packaging machine and a weight sorter.

[0005] In FIG. 12, reference numeral 60 denotes a vertical pillow type packaging machine, which comprises the following. 61 is an article input hopper for inputting articles to be packaged, 62 is a cylinder in which the input articles fall, 63 is a sheet-shaped film (not shown) arranged so as to surround the cylinder 62. A vertical sealer 64 seals the overlapped portion along to form the film into a tube, and 64 seals the film formed into a tube in the lateral direction to form an envelope-shaped bag. A horizontal sealer 65 seals the upper part in the horizontal direction to pack the articles, and 65 is a bag cutter for separating the bags by packing the articles with the horizontal sealer 64 and then cutting the upper part thereof. , Vertical sealer 63, horizontal sealer 64
The vertical pillow type packaging machine 60 is constituted by the bag cutter 65 and the bag cutter 65.

Numeral 70 denotes a part of the gantry.
Etc. are attached. Reference numeral 71 denotes a chute that guides a bag (work W) containing articles downward and carries it out to the next step, and reference numeral 73 denotes a conveyor with shelves that carries the work W and transfers it obliquely upward.

Reference numeral 81 denotes an approach belt for separating the work W from each other, reference numeral 82 denotes a weighing belt for placing the work W thereon and weighing the work W, and reference numeral 83 denotes a selection belt for removing a work having an incorrect weight. Is composed.

Although not shown in the drawings, these are appropriately installed by a gantry or the like.

Next, the operation of the conventional combination system of the vertical pillow type packaging machine 60 and the weight sorter 80 shown in FIG. 12 will be described.

A sheet-like film (not shown), which is a material of the bag, is placed at right angles to the cylinder 62, that is, horizontally in FIG. It is superposed so as to surround the periphery, and the portion is sealed with a vertical sealer 63 to be formed into a cylindrical shape, which is fed downward by a feed mechanism (not shown). The cylindrical film is
A horizontal sealer 64 seals in the horizontal direction to form the bottom of the bag surrounding the lower part of the cylinder 62. When the bag-shaped film is shifted downward by a predetermined length and an article to be packaged is thrown in from the article throwing hopper 61, the article is stored in the bag. Then, after the upper part of the bag is sealed by the horizontal sealer 64 to pack the articles, the bag is cut off by the bag cutter 65 and dropped to the chute 71. After the bag (work W) packed with articles reaches the bottom of the chute 71, it is put on a conveyor 73 with shelves and sent to a run-up belt 81 of a weight sorter 80. The transport speed of the run-up belt 81 is set to be faster than the transport speed of the conveyor 73 with shelves, and even if the workpiece W is transported on the conveyor 73 with shelves in proximity to the next workpiece W, the next workpiece W The workpieces W are placed on the weighing belt 82 of the weight sorter 80 one by one. The weighing belt 82 forms a part of a weighing unit (not shown), and measures the weight of the work W while conveying the work W at substantially the same conveyance speed as the approach belt 81. Although not shown, the discriminating device compares the weighed value with a predetermined value in the range of the positive amount, and outputs a work weight defect signal when the measured value is not in the positive range (incorrect amount). The sorting belt 83 conveys the work W at the same conveying speed as the weighing belt 82, and when the weight of the work W is an incorrect amount, removes the defective work by a discharge device (not shown) by a work weight defect signal.

In such a weight sorting system,
Since the work W is weighed after passing through the conveyor 73 with shelves, there are the following inconveniences.

[0012] The workpiece W is on the shelf with a conveyor W ₂ or W
Noriutsuri in a state of standing vertically like a _4, is transported to approach belt 81 stood as the W _2, or backwards as indicated by the dotted line in the middle of conveyance as W _4, sometimes pivoting forward In some cases, the workpiece W may be conveyed to the approach belt 81 in a state of being overlapped or close to the overlapped state,
The work W is not sufficiently separated from the run-up belt 81, causing a measurement error.

Further, when the workpiece W is transferred onto the conveyor with shelves 73, the workpiece W may be conveyed without the surface in contact with the chute 71 facing up, making it difficult to confirm the display in a later process.

In the conventional weight sorter 80, when weighing the workpiece W falling from above, the transport means in the preceding process is indispensable, and the weighing error due to the disturbance of the workpiece W in the transport means in the preceding process is prevented. In addition, there was no suitable means for preventing the work W from being disturbed by the transport means.

[0015]

SUMMARY OF THE INVENTION According to the present invention, a work W falling from above is directly weighed by being placed on a weighing section without passing through another transfer means, and the next process is performed without disturbing the transfer state. , And it is possible to eliminate defective products there.

[0016]

A chute-type weight sorter according to the present invention comprises a chute introducing portion 19 for receiving and falling a falling object to be weighed and a plurality of hook-shaped members 21 at its lower end.
And a chute holding portion 17 for holding the weighing chute, and a chute holding portion 17 for holding the weighing chute. A weighing unit 1 that weighs the weight of the object placed on the weighing unit and outputs the weighed value; and a weighing unit that is vertically movable in a plurality of gaps between the hook-shaped members of the chute receiving unit. When lifting, the lifting member 3 is located below the chute bottom, and after weighing, the object to be weighed is placed and raised to a position near the end of the hook-shaped member; and the lifting member 3 at the raised position And an unloading device 4 for changing the direction of the object to be weighed placed thereon and unloading the object to be weighed to the next step, and determining whether the weighed value is a predetermined positive amount or an incorrect amount. If the amount is incorrect, the It is obtained by a device 5.

Further, the chute type weight sorter according to the present invention comprises a chute introduction portion 19 for receiving and falling a falling object to be weighed, and a chute bottom portion 18 having a hook-shaped portion 21-2 at a lower end thereof. Receiving part 22 for placing
A measuring chute 2 having a chute holding portion 17 for holding the measuring chute, a measuring portion 1 for measuring the weight of an object placed on the bottom of the chute and outputting the measured value, and the chute When measuring the object to be weighed, which is provided on both sides of the hook-shaped portion of the receiving portion and located below the chute bottom, after weighing the object, the object to be weighed is placed and the hook-shaped portion is A lifting member 3 that rises to a position near the end, an unloading device 4 that changes the direction of the weighing object placed on the lifting member at the rising position, and unloads the weighing object to the next process; It is provided with a sorting device 5 for determining whether the weighed value is a predetermined correct amount or an incorrect amount and, when the amount is an incorrect amount, removing the object to be weighed.

Further, in the chute type weight sorter according to the present invention, the chute bottom portion 18 is formed so that the central portion is shaped like a mountain and is higher than both side portions.

Further, in the chute type weight sorter of the present invention, the weighing chute 2 and the chute holding portion 17 are hooked so as to be separable. In addition, the present invention
In such a chute type weight sorter, the carrying-out device
It is provided with an air nozzle 6 for tilting.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a mounting table of a measuring section on which a work W is placed is a chute-shaped measuring chute. The measuring chute has a hook-like bottom and is placed obliquely at a point where the work W falls. Has been. The work W that has fallen on the measuring chute is temporarily stored in the bottom portion and weighed, lifted by a lifting member that rises from below, and carried out to the next step in that state.

When the weighed value is an incorrect amount, the weighed work W is rejected at a predetermined place as a defective product by a sorting signal.

A case where the chute type weight sorter of the present invention is connected to a vertical pillow type packaging machine will be described with reference to FIG.

FIG. 11 is a view showing an example of use in which the chute type weight sorter of the present invention is connected to a vertical pillow type packaging machine.

In FIG. 11, reference numeral 60 denotes a vertical pillow type packaging machine, which is the same as that shown in FIG. Reference numeral 1 denotes a weighing unit, and 2 denotes a weighing chute. The bag-like object (work W) dropped from the vertical pillow type packaging machine 60 is temporarily placed on the bottom of the weighing chute 2 and its weight is measured. Reference numeral 3 denotes a lever which functions as a lifting member, and lifts the measured work W upward from the bottom of the measuring chute 2.
Reference numeral 4 denotes a work discharge air nozzle functioning as a transfer device, which ejects air to the work W lifted up by the lever 3 to discharge the work W to the conveyor 73 with shelves. Reference numeral 5 denotes a sorting air nozzle functioning as a sorting device, which ejects air when a work W determined to be defective in weight as a result of the measurement passes, thereby eliminating the defective work.

The detailed operation will be described in an embodiment.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.

FIGS. 1 to 10 each show an embodiment of the chute type weight sorter of the present invention.

FIGS. 1 to 7 show a first embodiment of the present invention. FIG. 1 is a front view, and FIG.
FIG. 3 is a view from the top, FIG. 4 is a view from the bottom, FIG. 5 is a detailed view of the lever fitting, FIG. 6 is a timing chart of the overall operation. FIG. 7 is a view showing another embodiment of FIG.

Referring to FIG. 1 is a measuring section, 2 is a measuring chute, 3 is a lever, and 4 is an air nozzle for carrying out the work, which is the same as that in FIG. 11 and will not be described here.

Reference numeral 6 denotes an air nozzle for dropping the work, 7 denotes a work detector, and 8 denotes an air nozzle for cleaning, which are not shown but are mounted on the mounting base 10 by appropriate means. These will be described later. 11 is a weighing unit mounting base fixed to the mounting base 10, 12 is a leg fixed to the weighing unit 1,
The measuring section 1 is fixed to the measuring section mounting base 11.

Numeral 13 denotes a measuring column fixed to the scale main body for measuring the weight of a load cell or the like (not shown) of the measuring section 1.

Reference numeral 14 denotes a chute holding side plate fixed to both sides of the measuring support 13 via a chute holding portion mounting plate 15 shown in FIG. 3, and 16 denotes projections provided on the chute holding portion side plate 14, which are chute holding portions. A part 17 is formed, and the measuring chute 2 is attached and held.

Reference numeral 20 denotes a chute introduction plate for introducing a work W falling from above downward, and constitutes a chute introduction section 19. Reference numeral 21 denotes six U-shaped members (hook-shaped members) fixed to the lower side of the chute introduction plate 20 at predetermined intervals in a comb-like manner as shown in FIG. 2, and in this embodiment, the left side in FIG. Has been extended upwards. This U-shaped member 21
Constitutes the chute receiving portion 22 and temporarily places the work W on the chute bottom 18. Reference numeral 23 denotes a hook portion, which is formed at a right angle from both sides of a hook portion plate 24 attached to the back side of the chute introduction plate 20, as shown by a dotted line in FIG. The weighing chute 2 includes a chute introduction portion 19, a chute receiving portion 22, a hook portion 23, and the like. The hook portion 23 is hooked by the projection 16 and attached to the chute holding portion 17. Reference numeral 26 denotes chute side plates attached to both sides of the measuring chute 2 for preventing the work W from protruding.

In FIG. 1, the lower side of the chute side plate 26 should be indicated by a solid line, but this is indicated by a dotted line.
The U-shaped member 21 and the lever 3 at the ascending position are indicated by solid lines for easy viewing.

Reference numeral 3 denotes a lever (lifting member) which is inserted into the gap between the U-shaped members 21 attached in a comb-like shape to the chute bottom portion 18.
From the position below (the position shown by the dotted line in FIG. 1)
The workpiece W is moved to the position at the end of the character-shaped member 21 (the position indicated by the solid line in FIG. 1), and the workpiece W whose weighing is completed is lifted. Reference numeral 27 denotes a lever mounting member to which the lever 3 is detachably fixed, and is rotatably supported around a shaft 28 fixed to the mounting base 10. Reference numeral 29 denotes an air cylinder for moving the lever 3 up and down. The air cylinder 29 is rotatably supported by an air cylinder mounting pin 31 fixed to the mounting base 10, and controls the air supplied from an air source (not shown) to control the piston 30. Expands and contracts, and pivots the lever fixture 27 rotatably held by the lever fixture pin 32 fixed to the tip of the piston 30.

Reference numeral 8 denotes a cleaning air nozzle, which is controlled by a control unit (not shown) when an article is spilled onto the mounting table 10 so that it can be cleaned by jetting air.

Referring to FIG. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1, and the part is shown by hatching.

Reference numeral 33 denotes a work discharge air hole, and a total of six work discharge air nozzles 4 above and below each of the three long holes.
The air from the work detector 7 passes through the middle stage of the long hole. Numeral 34 is a work dropping air hole through which air from a total of two work dropping air nozzles 6 passes through each of the two holes. Reference numeral 35 denotes a stopper, and two chute side plates 26 are attached to both sides of the chute introduction plate 20 at two locations.

The height of the chute bottom 18 formed at the lower end (upper side of the hatched portion) of the six U-shaped members 21 is substantially uniform.

Since FIG. 3 has already been described, the description is omitted here, but the chute side plate 26 is omitted.

Referring to FIG. In FIG.
The chute introduction plate 20 is omitted, and the chute side plate 26 is abbreviated.

A shaft mounting plate 36 supports the shaft 28 from both sides, and is fixed to the mounting base 10 (not shown). Reference numeral 37 denotes a lever cylinder, which is rotatably mounted around a shaft 28, and rotates integrally with the lever mounting member 27. Lever 3
Are two long rods 3a on both sides and three short rods 3b in the center
And the connecting rods 3c and 3d connecting these five rods. The tip of the long rod 3a is mounted on the lever mounting member 27. Depending on the shape of the work W, it may be convenient to remove the end connecting rod 3c without obstructing the carry-out depending on the shape of the work W or the like.

Referring to FIG. Reference numeral 38 denotes a block that constitutes a part of the lever mounting member 27. The insertion hole 38a into which the long rod 3a of the lever 3 is inserted and the long rod 3a that is inserted.
Is provided with a screw hole 38b for fastening the screw with a screw 39. A groove 3e is provided in a portion of the long rod 3a to be fastened with the screw 39, and the tip of the screw 39 is
A projection is provided so as to fit into e, and forms a stopper. Reference numeral 40 denotes a lever cylinder hole for fixing the lever mounting member 27 to the lever cylinder 37. Lever mounting fixture 27 of FIG.
Is omitted for a portion rotated by the piston 30.

Next, the operation will be described with reference to FIGS. 1 to 6 and FIG.

In FIG. 11, an article is loaded from the article loading hopper 61 to a place where a film (not shown) is formed in a bag shape as described above, and is stored in the bag. If the article is food such as potato chips, the cylinder 62
An inert gas such as nitrogen is injected together through a pipe inside the container, sealed by a horizontal sealer 64, cut and separated by a bag cutter 65, and placed on the measuring chute 2 as an object to be weighed (work W). Fall.

In FIG. 1, the work W falls on the chute introducing plate 20 and is temporarily placed on the chute bottom 18. The weight of the work W is weighed by a weighing body (not shown) of the weighing unit 1 via the weighing support 13. afterwards,
The piston 30 of the air cylinder 29 is extended, and the work W is placed thereon, and the lever 3 is raised. Air is ejected from the two work dropping air nozzles 6 for a predetermined period of time, and the work is brought down to the right side in FIG. The work is carried out to the conveyor 73 with shelves by blowing air from the air nozzle 4 for a predetermined time. Chute introduction plate 20 for work W
The information on the workpiece W is displayed on the surface in contact with. The reason why the surface is turned upside down is to facilitate the processing in the subsequent process. Depending on the properties of the work W, the work W can be unloaded with the surface in contact with the chute introduction plate 20 facing upward only by the work unloading air nozzle 4 without the work dropping air nozzle 6. .

After the work W is mounted on the chute bottom 18, the work detector 7
The work detection signal is output until the work ejection signal is output from the work ejection air nozzle 4 until the work detection signal is output from the work discharge air nozzle 4 until the work detection signal is output from the work ejection air nozzle 4. When there is an abnormality in the work detection signal, for example, a control device (not shown) issues an abnormality alarm to stop the operation of the vertical pillow type packaging machine 60 and the like.

When no abnormality is recognized in the work detection signal, the operation is continued, and the work W carried out to the conveyor 73 with shelves passes the sorting air nozzle 5 after a predetermined time. On the other hand, the weight of the work W is discriminated by a control device (not shown) whether it is a correct amount or an incorrect amount. If it is determined that the work W is an incorrect amount, the work W is selected when the work passes through the selection air nozzle 5. Air is jetted from the air nozzle 5 for use to sort out defective products.

Referring to FIG. 6, the timing from the weighing of the work W to the sorting thereof will be described.

FIG. 6 is a timing chart showing the timing from when the work W falls to the measuring chute 2 to when the sorting air nozzle 5 injects air.

In FIG. 6, (a) shows a bag cutter signal for instructing the bag cutter 65 of the vertical pillow type packaging machine 60 to separate the bag from the film, and (b) generates a weighing start command signal for the weighing section 1. A weighing timer signal; (c) a weighing command signal for instructing weighing of the weighing unit 1; (d) a lever vertical position indicating an ascending and descending position of a lever 3 as a lifting member;
(E) is a work tilt signal indicating the injection timing of the work tilt air nozzle 6, and (f) is a work discharge indicating the injection timing of the work discharge air nozzle 4 for discharging the work W to the conveyor 73 with shelves, which is the next step. A signal (g) is a work detection signal indicating that the work detector 7 is detecting the work W, and (h) is a sorting air nozzle 5 arranged in the middle of the conveyor 73 with shelves injecting an incorrect amount of product. This is a selection timing signal for setting the timing of the air to be generated.

The solid line represents time-series signals for one work W, and the dotted line represents the work W
Represents the signal for the workpiece W before or after.

The horizontal axis represents time (second). As can be seen from FIG. 6, this timing indicates that one work W is sent in one second, and that the processing speed is 60 pieces in one minute.

Next, these signals will be described with time.

The bag cutter signal (a) is normally generated at one-second intervals. Since the work W is supplied by this signal, it determines a reference start point for this timing chart. The operation of each unit is determined on the basis of time. The supply of the work W is one piece per second. The weighing timer signal (b) returns (falls) 0.3 seconds after the rising of the bag cutter signal (a). The weighing command signal (c) returns (falls) 0.2 seconds after the rising of the weighing timer signal (b). During this 0.2 second, the weight of the work W is measured. This weighed value is discriminated by a means (not shown) whether it is a correct amount or an incorrect amount, and the result is stored in a shift register and 0.9 seconds after the fall of the weighing command signal (c) by the selection timing signal (h). It is read out by the selection timing signal (h) 1.4 seconds after the rise of the cutter signal (a). If the weighing result is defective, air is injected at this timing.

On the other hand, a lever operation signal (not shown) for raising and lowering the lever 3 at the fall of the weighing command signal (c) operates, and the lever 3 is lifted to the raised position after about 0.1 second as shown in (d). After stopping for 0.3 seconds, it is returned to the lowered position in about 0.1 seconds.

The work tilt signal (e) rises about 0.05 seconds after the lever 3 starts to rise and rises to the middle point when it rises to the intermediate point, and the work tilt air nozzle 6 rises for about 0.25 seconds.
Inject air from The work unloading signal (f) rises about 0.15 seconds after the rise of the work tilt signal (e), that is, 0.1 second after the lever 3 is lifted to the ascending position, and the work discharge air nozzle is 0.3 seconds. Inject air from 4.

The work detection signal (g) is obtained as follows: about 0.1 second after the rise of the bag cutter signal (a), the work is cut off by the bag cutter 65 and slides down the chute introduction plate 20 of the measuring chute 2. A signal is output from the position where the work detector 7 is passed on the way to the chute bottom 18, and the work W is sent from the work discharge air nozzle 4 by the work discharge signal (f) so that the work W is transferred from the conveyor 7 with shelves.
The signal is output for about 0.75 seconds until it is carried out to No.3.

As described above in detail with reference to FIGS. 1 to 6 and FIG. 11, according to this embodiment, the chute bottom portion 18 is formed by arranging six U-shaped members 21 in a comb shape at predetermined intervals. Then, the work W is dropped there and weighed. After the weighing, the work W is lifted by raising the five rod-shaped levers 3 as lifting members in this comb-shaped gap so as to enter the gap. Then, the surface of the workpiece W coming into contact with the chute introduction plate 20 is tilted upward by injecting air from the work dropping air nozzle 6, and the air is further injected from the work unloading air nozzle 4 to transfer the work to the next step of the conveyor with shelves. Since it is carried out to 73, there are the following advantages.

A run-up section for placing works on the measuring section 1 one by one is not required, and the work W is received by the U-shaped member 21 so that the work W can be surely placed on the measuring section 1 one by one and transported by the measuring section 1. In addition to being able to accurately measure without trouble, the work W can be carried out with the surface in contact with the chute introduction plate 20 facing upward when the work W is carried out to the next process. The work W is lifted up by the lever 3, and then the work W is carried out to the shelf-equipped conveyor 73 by the work take-out air nozzle 4, so that the work can be reliably carried out.

The measuring chute 2 is easily detachably attached to the projection 16 of the chute holding portion 17 by hooking the hook portion 23, and the lever 3 is easily detachably attached to the lever attaching member 27 by the screw 39. The size of the measuring chute 2 and the lever 3 can be easily changed according to the size of the workpiece W.
At the time of cleaning, it can be easily cleaned by removing it.

Further, since the presence / absence of the work W placed on the U-shaped member 21 is detected by the work detector 7, the work detection signal is not output when the work W should be placed. Also, when a work detection signal is output when the work W is unloaded and the work should not be placed, processing such as outputting abnormal information and stopping the work can be performed.

In the time chart of FIG. 6, the time relationship is defined based on the bag cutter signal (a) of the bag cutter 65 of the vertical pillow type packaging machine 60, but the detector is placed while the workpiece W is falling. The time relationship can be defined based on the output signal.

Referring to FIG. FIG. 7 illustrates a V-shaped member 21-1 as another embodiment of the hook-shaped member, in which the U-shaped member 21 of FIG. 1 is replaced with a V-shaped member 21-1. It is the same as FIG.

In FIG. 7, six V-shaped members 21-1 are formed in a comb-like manner at predetermined intervals on the lower side of the chute introducing plate 20 at a predetermined interval, and are completely similar to the U-shaped member 21 of FIG. Similarly, the workpiece W that has fallen is locked by a rising portion at the right end of the V-shape.

Although the U-shaped member 21 and the V-shaped member 21-1 have been described as examples of the hook-shaped member, the hook-shaped member stops the movement of the work W dropped on the chute introduction plate 20. What is necessary is just to be provided with such a projection part.

8 and 9 will be described. 8 and 9 are views showing the second embodiment. FIG. 8 is a front view corresponding to FIG. 1 of the first embodiment, and FIG. 9 shows the measuring chute 2 of FIG. FIG. 3 is a view corresponding to FIG. 2 of the first embodiment, as viewed from a different direction.

In FIGS. 1 and 2, a plurality of U-shaped members 21 are arranged in a comb-like manner at predetermined intervals to form a chute receiving portion 22, and a work W is placed on the bottom 18 of the chute. After the measurement, the lever 3 is moved upward from the gap between the U-shaped members 21 to raise the workpiece W.

8 and 9, the chute receiving portion 22 has a hook-shaped portion 21-2 formed by molding a single plate extending from the chute introduction plate 20 into a U-shape.
After placing and weighing the work W on the chute bottom 18 made by 1-2, the lever 3 is moved upward from both sides of the hook-shaped portion 21-2 to raise the work W. Other configurations and operations are the same as those in FIG. 1 and FIG.

Depending on the properties of the articles stored in the bag, the same effect as in the first embodiment can be obtained even with such a simple structure.

The hook-shaped portion 21-2 may be formed separately from the chute introducing plate 20 and joined by welding or the like.

The shape of the hook-shaped portion 21-2 is not limited to the U-shape, but may be a V-shape, as long as it is a hook-like shape for preventing the workpiece W from slipping.

Referring to FIG.

FIG. 10 shows a third embodiment, which is an embodiment of the third aspect of the present invention. FIG. 10 is a view corresponding to FIG. 2 showing a cross section taken along line AA of FIG. 1 in the first embodiment. In FIG. 2, the six U-shaped members 21 forming the chute bottom 18 are arranged such that the upper sides of the hatched portions at the lower ends have a uniform height.

In FIG. 10, the six U-shaped members 21
2 is different from FIG. 2 in that the upper side of the hatched portion at the lower end is formed in a mountain shape with a high center and low sides. The height of the end portion of the U-shaped member 21 is substantially uniform, and other configurations are not different from those of the first embodiment shown in FIG.

Generally, the bag made by the vertical pillow type packaging machine is in the shape of an envelope. When articles are stored in the envelope-shaped bag, the central portion expands. Therefore, the bottom of the bag (work W) is higher at the center than at both sides. It becomes concave and lifted shape.

Since the center of the weight of the work W is located at the center of the inflated bag, when the chute bottom 18 has a uniform height as shown in FIG. The workpiece W is placed so as to be in contact with the bottom 18, and both sides of the bottom of the work W protrude downward from the gap of the U-shaped member 21 and come into contact with the lever 3 to cause a measurement error, or the U-shaped when the lever 3 is raised. Problems may occur such that the workpiece W may be sandwiched between the member 21 and the lever 3 to hinder conveyance to the next process.

In the third embodiment, such a problem is eliminated, and an article is placed in an envelope-shaped bag, and a work W whose bottom center is higher than both sides is stably held and measured. Then, it can be carried out to the next process.

In the above third embodiment, the U-shaped member 21 has been described as an example of the hook-shaped member. However, the V-shaped member 22-1 and other members having the above-described protrusions may be used. Can be.

[0080]

As described above in detail, the chute-type weight sorter of the present invention has a chute introducing portion 19 which receives a falling object to be weighed and guides it downward and a plurality of hook-shaped members 21 at a lower end thereof. A weighing chute 2 comprising a chute receiving portion 22 for placing the object to be weighed on a chute bottom portion 18 formed at intervals and a chute holding portion 17 for holding the weighing chute are placed on the chute bottom portion. Weighing unit 1 that weighs the weight of the object to be weighed and outputs the weighed value
When weighing the object to be weighed, the weighing object is located below the chute bottom and is weighed after placing the object to be weighed. The lifting member 3 ascending to a position near the end of the hook-shaped member and the object to be weighed placed on the lifting member at the ascending position are changed in direction to carry out the object to be weighed to the next step. And a sorting device 5 that determines whether the weighed value is a predetermined correct amount or an incorrect amount and removes the object to be weighed when the weighed value is the incorrect amount. falling to the objects to be weighed accurately weighed one by one, the information
Can be carried out easily and can be carried out to the next step, and the objects to be weighed can be accurately sorted.

The chute type weight sorter of the present invention
A chute introduction unit 1 that receives a falling weighing object and guides it downward.
9 includes a chute receiving portion 22 for placing the object to be weighed on a chute bottom portion 18 having a hook-shaped portion 21-2 at the lower end, and a chute holding portion 17 for holding the weighing chute. Weighing unit 1 that weighs the weight of the object placed on the bottom and outputs the measured value
When weighing the object to be weighed is located below the chute bottom and weighed after placing the object to be weighed, Lifting member 3 that rises to a position near the end of the hook-shaped part
And an unloading device 4 for changing the direction of the object to be weighed placed on the lifting member at the ascending position and carrying out the object to be weighed to the next process, and the weighing value being a predetermined positive amount. A sorting device 5 for discriminating whether or not there is a fraudulent amount, and when the fraudulent amount is fraudulent, is provided with a sorting device 5 for accurately measuring the falling objects to be weighed one by one and displaying information. Processing by
In addition to being able to carry out the process to the next step with ease, the objects to be weighed can be accurately sorted.

Further, in the chute type weight sorter according to the present invention, since the chute bottom 18 is formed so that the central portion is formed in a mountain-like shape so as to be higher than both side portions, articles are stored in an envelope-shaped bag. The work whose center is swollen and the center of the bottom is higher than both sides can be stably held and weighed, and can be carried out to the next step.

Further, in the chute type weight sorter of the present invention, since the weighing chute 2 and the chute holding section 17 are hooked so as to be separable, the chute main body can be exchanged according to the size of the work. And can be easily removed during cleaning. In addition, the present invention
Chute type weight sorter,
The air nozzle 6 for
Can be changed easily.

[Brief description of the drawings]

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

FIG. 2 is a view of the measuring chute of FIG. 1 viewed from a direction perpendicular to a chute introduction plate.

FIG. 3 is a top view showing the configuration of the first embodiment of the present invention.

FIG. 4 is a bottom view showing the configuration of the first embodiment of the present invention.

FIG. 5 is a detailed view of the lever mounting tool of FIG. 1;

FIG. 6 is a timing chart of the first embodiment of the present invention.

FIG. 7 is a view showing another embodiment of FIG. 1;

FIG. 8 is a front view showing the configuration of a second embodiment of the present invention.

9 is a view of the measuring chute of FIG. 8 as viewed from a direction perpendicular to the chute introducing plate.

FIG. 10 is a diagram showing a third embodiment of the present invention.

FIG. 11 is a schematic view showing an example of use of the present invention.

FIG. 12 is a schematic view showing a conventional combination system of a vertical pillow type packaging machine and a weight sorter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Measuring part 2 Measuring chute 3 Lifting member (lever) 4 Unloading device (air nozzle for unloading work) 5 Sorting device (air nozzle for sorting) 6 Air nozzle for unloading work 7 Work detector 8 Air nozzle for cleaning 13 Measurement column Reference Signs List 16 projection 17 chute holding portion 18 chute bottom portion 19 chute introduction portion 20 chute introduction plate 21 U-shaped member (hook-shaped member) 21-2 hook-shaped portion 22 chute receiving portion 23 hook portion 31 air cylinder attachment pin 32 lever attachment attachment Pin 60 Vertical pillow type packaging machine 65 Bag cutter

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B07C 5/16-5/32 G01G 15/00 G01G 21/22-21/23

Claims (5)

(57) [Claims] 1. A chute introduction part (19) for receiving and falling a falling object to be weighed and a chute bottom part (18) formed at a lower end thereof with a plurality of hook-shaped members (21) arranged at predetermined intervals. A chute receiving portion (2) on which the object to be weighed is placed
A weighing chute (2) comprising: a weighing chute (2); and a chute holding portion (17) for holding the weighing chute, which weighs an object placed on the bottom of the chute and outputs the weighed value. A portion (1) and a plurality of gaps between the hook-shaped members of the chute receiving portion, which are vertically movable and positioned below the chute bottom when weighing the weighing object, and weighing the weighing object after weighing. And a lifting member (3) that rises to a position near the end of the hook-shaped member, and the object to be weighed placed on the lifting member at the rising position
And a carry-out device (4) for carrying out the object to be weighed to the next process by changing the orientation of the weighing object , and determining whether the weighed value is a predetermined correct amount or an incorrect amount, A chute type weight sorter provided with a sorter (5) for removing an object to be weighed. 2. A chute introduction part (19) for receiving and falling a falling object to be weighed and a hook-shaped part ( 21- ) at its lower end.
2 ) a measuring chute (2) comprising a chute receiving portion (22) for placing the object to be measured on a chute bottom (18) having the same;
A weighing unit (1) having a chute holding unit (17) for holding the weighing chute, weighing an object placed on the bottom of the chute and outputting the weighed value; When the object to be weighed is weighed and is positioned below the chute bottom when measuring the object to be weighed and placed on both sides of the hook-shaped portion of the portion, the object to be weighed is placed and the end of the hook-shaped portion is placed. Lifting member ascending to a nearby position (3)
The object to be weighed placed on the lifting member at the ascending position
And a carry-out device (4) for carrying out the object to be weighed to the next process by changing the orientation of the weighing object , and determining whether the weighed value is a predetermined correct amount or an incorrect amount, A chute type weight sorter provided with a sorter (5) for removing an object to be weighed. 3. The chute-type weight sorter according to claim 1, wherein the chute bottom (18) is formed so that a central portion is formed in a mountain shape so as to be higher than both side portions. 4. The chute-type weight according to claim 1, wherein the measuring chute (2) and the chute holding portion (17) are separably hooked. Sorting machine. 5. The apparatus according to claim 5, wherein the carry-out device is an air nozzle for working down.
(1) to (6), wherein
5. The chute-type weight sorter according to any one of 4.