JPH03216418A - Pick-up device for can - Google Patents

Abstract

PURPOSE:To continuously and smoothly pull off the given number of cans conveyed at a high speed by pulling off the cans on a conveying means through vacuum suction by means of openable holes formed in a circulating body and feeding the cans to the receiving means side through a span plate. CONSTITUTION:A conveying means A moving in a specified direction in a state that the interior of a can K is hooked to a pin 4 located on a circulating support body 3, a pull-off means B on the outer periphery of which the cans K are placed and which has a circulating body 15 a part of which is positioned facing a part of the support body 3 with a given distance therebetween, and a receiving means C to convey the cans K transferred thereto from the circulating body 15 through a span plate 37 are interconnected. In this constitution, through operation of an opening and closing mechanism 22 of the pull-off means B, a plurality of holes 17 formed in the circulating body 15 can be opened and closed. The can K on the conveying means A is instantaneously pulled off from a pin 4 through the hole 17 by vacuum suction, and the can is moved to the circulating body 15. This constitution prevents the occurrence of wear each time the high speed circulating body 15 is stopped and started, and reduces the generation of a shock when the can K makes contact with the surface of the circulating body 15 to effect stable pick-up.

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION J This invention relates to a can extraction device for taking out printed cans for inspection in a printing line for the outer surface of cans.

BACKGROUND OF THE INVENTION Generally, designs on the surface of beverage cans are created by printing a predetermined design on the surface of the can by transfer, and then heating and baking the can. In can printing lines where such designs are printed and burned, inspections are made not only when the line is started, but also during line operation to ensure that the cans are being printed correctly.

By the way, in the printing inspection of cans, is it necessary to remove the cans from the printing line before the printed cans enter the baking device? Due to the extremely high speed of 1 minute (hereinafter referred to as cpm), it is only possible to extract it by an operator.

Therefore, the present applicant previously filed an application for a can extraction device for extracting cans from the above-mentioned high-speed printing line (Tokukō Sho 63-7 0.134').

This can extraction device consists of a conveying means that attaches multiple pins to a circulating support, inserts each bottle into the can, and transports the can in a fixed direction, and a circulating body on the outer periphery. The receiving part is provided so as to be movable in the longitudinal direction and is attached to the conveying means so that a part of the circulating body faces a part of the supporting body with a predetermined spacing, The body is provided with a plurality of holes opening on the front and back surfaces thereof, and an exhaust means is provided to draw outside air into the body by passing the above holes through the receiving means, and further, compressed air is injected into the conveying means for circulation. It is equipped with a nozzle that brings the bottom of the can into contact with the surface of the body.

In the extractor configured as described above, when compressed air is injected from the nozzle to bring the bottom of the can into contact with the surface of the circulating body, the can is attracted to the surface of the circulating body by vacuum suction from the holes of the circulating body. Then, by blowing out compressed air while moving the circulating body according to the speed of the conveyance means, cans are successively attracted to the surface of the circulating body, and the set number of cans is stopped at a predetermined position by moving the circulating body. This allows the can to be easily removed.

"Problem to be Solved by the Invention J" By the way, in recent years, the demand for beverage cans has been increasing further, and for this reason, it is being considered to further increase the production speed of cans.In this case, each production line As the speed increases, the printing line for cans also needs to be faster, and it is being considered to increase the can transport speed to about 2500 cpm.

In this way, the conveyance speed of cans in the printing line can be increased to 1 5
0 0 cpm, the following problems will occur in the conventional extraction device used for the above-mentioned sampling inspection of cans.

In other words, in order to inspect the printing on cans, it is necessary to stop the cans, which are taken out from the conveying means and transported by the circulating body, at a predetermined position. Since the body must be stopped, the circulatory body and the mechanism that stops it are subject to significant wear and tear.

In addition, since the cans are transported at a higher speed than before, the impact when the compressed air is injected from the nozzle and the bottom of the can comes into contact with the surface of the circulating body becomes large, making it easier for errors to occur in the equipment itself. , stable extraction cannot be performed.

Purpose of the Invention The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a can extraction device that can continuously and smoothly extract a predetermined number of cans that are transported at an extremely high speed. .

"Means for Solving the Problem" In order to achieve the above object, the can extractor of the present invention inserts a plurality of bottles attached to a circulating support into the inside of a bottomed cylindrical can. By doing so, a conveying means for conveying the cans in a fixed direction in a suspended state, and a circulation body for conveying the cans on the outer periphery are provided so as to be movable in the longitudinal direction,
a extraction means attached to the conveying means such that a part of the circulation body faces a part of the support body at a predetermined distance; A crossing board is provided horizontally at a position a predetermined distance apart in the direction of movement of the circulating body from the spaced-apart part, and is provided at the end of the crossing board, on which the can is transferred from the circulating body, and receiving means having a conveyance belt for receiving cans that have crossed and conveying them in a direction away from the gangplank;
The circulating body has a plurality of holes opening on its front and back surfaces, and the extracting means includes an exhaust means for sucking outside air into the interior by circulating the holes, and a part of the circulating body is attached to the support. are provided at positions facing each other with a predetermined distance between them,
It has an opening and closing mechanism that opens and closes the hole of the circulation body.

"Operation J" In the can extraction device of this invention, by opening and closing the opening/closing mechanism of the extracting means and opening and closing the holes formed in the circulating body, cans are removed from the conveying means by vacuum suction from the holes. It is instantly extracted and adsorbed to the surface of the circulating body, and
Since this can is received by the receiving means from the extraction means via the connecting plate without stopping the circulating body, the large wear caused by stopping and starting the extremely high-speed circulating body as in the conventional method is prevented. You can reliably extract the can.

In addition, since the cans are extracted from the conveying means by vacuum suction through holes formed in the circulating body, compared to the conventional method in which the cans are brought into contact with the circulating body using compressed air, the support of the conveying means and the extracting means The distance between the can and the circulating body can be narrowed, so that the impact when the can comes into contact with the surface of the circulating body is reduced, and errors are less likely to occur in the device itself, allowing for stable extraction.

"Embodiment" Hereinafter, an embodiment of the can extraction device of the present invention will be described with reference to FIGS. 1 to 6.

FIG. 1 is a side view of the extraction device, and the extraction device shown in this figure includes a conveyance means A, a extraction means B attached to this conveyance means A, and a receiving means C attached to this extraction means B. It is mainly composed of.

First, the structure of the conveying means A will be explained. In FIG. 1, reference numeral 1 is a frame. The right side of the frame 1 is inclined with respect to the vertical direction so that the upper end is closer to the left side. A pair of pulleys 2, 2 spaced apart from each other in the vertical direction are attached to the right side of the frame 1, and a chain (support body) 3 is wound around these pulleys 2, 2. The chain 3 is disposed so as to pass through a baking device (not shown), and the chain 3 includes:
A plurality of pins 4... are attached at equal intervals. As shown in FIG. 4, the pin 4 is made up of a metal rod 4a with an elastic body 4b fixed to the tip thereof. Such a conveying means A is configured to receive a printed can K from a rotary press, convey the can K to the position shown in FIG. 4 0 0 to 1 5 0 0
It is set to an extremely fast speed of cpm.

Next, the extraction means B will be explained with reference numeral 10 in the figure.
is a frame. A pair of plates 1 of the same shape and size are attached to the upper end of the frame 10. 1 and 2 are attached parallel to each other and spaced apart.

These plates 1 2 , . A wall portion 13 that substantially partitions the inside into left and right sides is formed along the downward direction of the road. In addition, a guide rail 14 made by Flastinok is attached to the inner surface of the temporary material 12, 1.2 along the left edge of the temporary material 12, l2, and both ends of these guide rails 14 are connected to the wall portion l3. A chain (circulating body) 15 is provided on the outer periphery of this guide rail 14.

As shown in FIG. 2, this chain 15 is made by connecting a plurality of plastic link plates 16 in a hinge shape, and each link plate 15 has a plurality of holes opened on its front and back surfaces. 17... are formed. Hole l7...
The pitch is set smaller than the diameter of the can K. On the other hand, a blower (exhaust means) 18 is attached to the plate material 12. The blower l8 includes a plate material 12.12 and a wall portion 13.
and the air in the internal space 19 defined by the chain 15 is exhausted to the outside, whereby the internal space 19 is maintained at a negative pressure, and the external air flows through the holes 17 and enters the internal space 19. It is designed to be attracted to.

Furthermore, when the chain 15 is attached to the guide rail 14, the straight portion 15a on the left side of the lower end thereof is inclined by about 3 degrees so that it gradually separates from the chain 3 of the conveying means A as it goes upward. The straight portion 15a extends in an arc shape away from the chain 3 from the upper end 15b, and is approximately parallel to the horizontal plane at the top 15c. This chain l5 is made of temporary material l2
Two fuss 92 arranged at the upper and lower positions between l2
0.20 and is wound around a subroket (not shown),
A motor (not shown) connected to the sprocket allows movement in its longitudinal direction.

Further, on the plate material 12.12, link plates 16 . Opening/closing mechanism 2 for opening/closing hole 17
2 is provided.

That is, as shown in FIG. 3 and FIG.
．． Cylinders 23, 23 are provided on the outer surfaces of the cylinders 12, facing each other, and the piston rods 23a, 23a of these cylinders 23, 23 are connected to the plate members 12, 12, respectively.
12 in a slidable manner. 3 Biston Ronodo 2
3g. An opening/closing plate 24.24 is attached to the tip of the piston rod 23a, and the hole 17 is opened and closed by moving the opening/closing plate 24.24 toward and away from each other by means of the piston rods 23a, 23a. It has become.

On the other hand, a timing sensor 25 is attached to the frame 1 of the transport means A at a position facing the opening/closing mechanism 22. This timing sensor 25 reads the passage of the can K conveyed at high speed by the conveyance means 8, and operates the cylinders 23, 23 to open and close the can K when the can K is at a predetermined position when a sampling signal is input. Provisional 2 4'
+ 2 4 is opened and closed, thereby moving the can K to the chain 15.
This is so that it can be attached to the link [16] and removed.

Further, a guide rail 26 is attached to the frame 1 along the chain 3 at a position opposite to the opening/closing mechanism 22. This guide rail 24 prevents the chain 3 from swinging when the can K passes through the portion facing the opening/closing mechanism 22.

Next, the receiving means C will be explained with reference numeral 28 in the figure.
is a frame. A pair of plates 2'9 and 29 of the same shape and size are attached to the upper end of the frame 28 in parallel and spaced apart from each other. A plastic guide rail 30 is attached to the inner surface of these plates 29, 29 along the upper edge of the plates 29 and parallel to the top 15c of the chain 15 of the extraction means B. In addition, temporary material 29
, 29, a pair of pulleys 3 1, 3 1 are installed spaced apart on the left and right, and these pulleys 3l, 3
1 is wound with a chain <m conveyance belt) 32 that moves to the right on the power idle rail 3o.

This chain 32, like the chain 15 described above, is made up of link plates connected in a hinge-like manner, and each link has a plurality of holes formed in its surface. Further, a blower 33 is attached to the temporary material 29. This buah 33 is for exhausting the air in the internal space 34 defined by the steel materials 29, 29 and the chain 32 to the outside, and thereby maintains the internal space 34 at a negative pressure. External air flows through the holes temporarily formed in the link, and a passage detection sensor 35 is located above the chain 32.
is provided. The passage detection sensor 35 stops the chain 32 when the leading can K transported by the chain 32 blocks light, and is installed at a position where a predetermined number of cans K can be transferred.

Further, between the extracting means B and the receiving means C, a connecting plate 37 is provided for passing the can K extracted by the extracting means B to the receiving means C. This gangplank 37
is a rectangular plate, and its both ends are brought into close contact with the uppermost part 15c of the chain 15 of the extracting means B and the left end of the chain 32 of the receiving means C, so that no difference in level occurs. It is set up as follows. This gangplank 3
A prismatic top guide portion 38 crosses above the Vi3
7 and the height from the spanning plate 37 is slightly longer than the length of the can K. Further, both sides of the spanning plate 37 (as shown in FIG. This is to prevent the can K from deviating from the side guide section 3.
The height of 9.39 is set to a height that does not reach the body of the can K because the design printed on the body of the can K is easily peeled off before printing. Further, in this embodiment, side guide portions 39 and 39 are provided, but these are provided as necessary and are not essential components of the present invention.

Next, the operation of the can K extraction device having the above configuration will be explained.

When the conveyance means A receives the can K from the rotary press during operation of the printing line, it conveys it upward in FIG. 1 and passes it through the printing device. The conveyance speed in this case is the manufacturing speed of the printing line, that is, 1400 to 1500c.
The speed is set to match the pm. When inspecting the printing, first, the chain 15 is moved clockwise in FIG. 1, and the moving speed is set to L 3 50 cpm. In addition, the blower 18 is activated to maintain a negative pressure in the internal space 19, and the opening/closing plates 24, 24 of the opening/closing mechanism 22 are closed.

Next, a signal for removing the can K is input. Then, the timing sensor 25 reads the passage of the can K, and when the can K is at a predetermined position, that is, the position facing the opening/closing plate 24.24 (the position indicated by the symbol a in FIG. 1), the cylinder 23.23
is activated, and the opening/closing plates 24, 24 open. Opening/closing plate 24.2
4 is opened, the can K is attracted to the surface of the link plate 16 by vacuum suction from the hole 17 formed in the link plate I6 forming the chain 15 of the extraction hand B. The can K attracted to the surface of the link plate 16 separates from the chain 3 as it moves upward in FIG.
In this way, the cans K are successively removed from the chain 3.

The extracted cans K are sequentially conveyed upward by the chain 15, and are moved from the horizontal top 15c to the connecting plate 37.
cross in sequence.

On the other hand, the blower 33 of the receiving means C is activated in advance to maintain the internal space 34 at negative pressure.

Then, the cans K that have crossed the gangway board 37 are sequentially transferred to the chain 32 of the receiving means C, and are attracted by vacuum suction from the holes formed in the link plates that make up the chain 32.
They are sequentially transported to the right (transport speed: 900 cpm).

When the first can K blocks the passing' detection sensor 35, the chain 32 stops, and then the operator removes the can KC from the chain 32 and visually inspects the printing condition.

In the above-mentioned can extracting device, a predetermined number of cans K are instantly extracted by a extracting means B from a conveying means A in which the cans K are conveyed at an extremely high speed (1500 cpm), and further, from this extracting means B. The chain 15 (moving speed 1 3 5 0 cpm) is received by the receiving means C via the gangplank 37 without stopping, and the chain 32 (moving speed 9 0 cpm) of the receiving means C is received by the receiving means C without stopping.
extracting can K by stopping 0 cpm);
In other words, since the can K is extracted in two stages, it is possible to extract the can K in two stages, so that it can be extracted at extremely high speed (In00~I')0(
It is possible to prevent large wear caused by stopping and starting the chain of 'I com).

Also, by opening and closing the opening/closing plate 24.24 of the opening/closing mechanism 22,
Hole 1 formed in link plate 16 constituting chain 15
By opening and closing 7, the can K is pulled out from the conveying means A by vacuum suction from this hole l7.
Compared to the conventional method in which the can K is brought into contact with the chain using compressed air, the distance between the chain 3 of the conveying means A and the chain 15 of the extracting means B can be narrowed, so that the can K is brought into contact with the surface of the chain 15. The impact upon contact is small, and errors are less likely to occur in the device itself, allowing for stable extraction.

Furthermore, since a predetermined number of cans K can be taken out in succession, a series of printing conditions of the cans K can be inspected.
Therefore, if there is an abnormality in printing, it can be determined which rotary press was used, and the abnormality can be easily dealt with.

In addition, there are 1 notes above and on both sides of the gangplank 37.
Since the can K is provided, the can K does not deviate from the connecting plate 37, and the can K can be reliably transferred from the extracting means B to the receiving means C.

"Effects of the Invention" As explained above, according to the can extracting device of the present invention, a predetermined number of cans can be instantly extracted by the extracting means from the conveying means in which the cans are conveyed at an extremely high speed, and further,
The cans are extracted from the extracting means by being received by the receiving means via the connecting plate without stopping the circulation body of the extracting means, that is, the cans are extracted in two stages, unlike the conventional method. Furthermore, it is possible to prevent large wear caused by stopping and starting the circulating body at extremely high speeds.

In addition, by opening and closing the opening/closing mechanism and opening and closing the holes formed in the circulating body, the cans are removed from the conveying means by vacuum suction from the holes, so the cans are moved to the circulating body using conventional compressed air. The distance between the supporting body of the conveying means and the circulating body of the extracting means can be narrowed compared to the case where the cans are brought into contact with the circulating body of the extracting means. Errors are less likely to occur and stable extraction can be performed.

Furthermore, since a predetermined number of cans can be taken out in succession, it is possible to know which part of the printing line is abnormal, and it is possible to easily take measures against the abnormality.

In addition, since the top guide portion and the side guide portions are provided above and on both sides of the spanning board, the cans do not deviate from the spanning board, and the cans can be reliably transferred from the extracting means to the receiving means.

[Brief explanation of drawings]

1 to 5 show an embodiment of the can extraction device of the present invention, FIG. 1 is a side view showing a schematic configuration of the can extraction device, and FIG. 2 is a main part of the circulating body. 3 and 4 show the opening/closing mechanism, FIG. 3 is a sectional view showing the opening/closing plate in a closed state, and FIG. 4 is a sectional view showing the opening/closing plate in an open state. , FIG. 5 is an enlarged view of the portion indicated by the arrow ■ in FIG. 1, and FIG. 6 is a sectional view taken along the line ■--■ in FIG. A...transporting means, B...extracting means,
C... Receiving means, 3... Chain (support body), 4... Bin, 15... Chain (circulating body), 17...
... Hole, 18 ... Blower (exhaust means), 22
...Opening/closing mechanism, 32...Chain (transport belt), 37...Gang plate, 38...Chip guide section, 39...Side guide Department.

Claims (2)

[Claims] (1) A conveying means that attaches a plurality of pins to a circulating support and inserts each pin into a cylindrical can with a bottom to transport the can in a fixed direction while hanging the can; a extracting means that is attached to the conveying means so that the circulating body to be conveyed is movable in its longitudinal direction, and a part of the circulating body faces a part of the support body with a predetermined distance; A part of the circulating body is provided horizontally at a position spaced a predetermined distance from a part of the support body by a predetermined distance in the direction of movement of the circulating body, and a gang plate on which the can is transferred from the circulating body. , a receiving means provided at the end of the gangplank for receiving cans that have crossed the gangplank and transporting them in a direction away from the gangplank; The extracting means has a plurality of holes, and the extraction means includes an exhaust means for sucking outside air into the inside by circulating the holes, and a part of the circulation body is isolated from a part of the support body for a predetermined period of time. installed in opposite positions,
A can extraction device characterized by having an opening/closing mechanism for opening and closing the hole of the circulation body. (2) A can extraction device characterized in that a top guide portion is provided above the connecting plate at a distance slightly longer than the length of the can from the connecting plate.