JPH0678148B2 - Can body blank sorter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a can body blank for supplying a can body blank to a can machine by eliminating defective can body blanks in advance and supplying only a good product body blank to the machine. Regarding sorting equipment.

The can barrel blank stock supplied to the can making machine is coated on its inner surface with a paint by a coating machine in a large plate state as shown in Fig. 4a and then, in a printing machine, for example for 36 can barrel blanks. The printing surface is printed on the outer surface. At this stage, defective factors (color misregistration, defective printing, dust, etc.) may partially occur on the blank original plate due to coating, printing roller printing pressure of the printing roller, fluctuations in rotation speed, and the like. For this reason, the workers have selected and eliminated them by visual inspection. However, it is wasteful to discard one blank original plate A in spite of such partial defects. For this reason, the blank original plate A is marked in advance on the defective portion.
As shown in b and c, the blank blank A is cut into blanks B and further divided into each can body blank C, and only the defective can body blank C is collated with the check sheet created corresponding to the marking. It was sorted out. Therefore, not only a large number of workers are required for this work, but also the work is complicated and time-consuming, and misconceptions in the verification work lead to inconveniences such as discarding of good-quality can body blanks and mixing of defective products. Yes Work efficiency was reduced.

The present invention eliminates such conventional inconvenience, and provides an apparatus for eliminating defective products of divided can body blanks and selecting only non-defective products. A group of accommodating chambers that are cut into individual can body blanks and are discharged in a substantially horizontal state in a row, and that house the can body blanks by intruding and accommodating the can body blanks, and a position opposite to the side where the can body blanks are inserted. A sorting rod that is pivotally supported by the front end of the can body blank and that can be tilted vertically above and below the intrusion trajectory of the can body blank; and each sorting rod from a position above the intrusion trajectory to a position below the intrusion trajectory. A drive device for tilting the can body blank and then tilting the can body blank above the intrusion trajectory.
And a defective can body blank removing device which is provided at the upper limit position of each sorting rod and has a permanent magnet attached to the conveying surface.

It will be described in more detail with reference to FIGS. 1 to 3 showing an example of the embodiment of the present invention.

In the embodiment shown in the figure, the apparatus for embodying the present invention uses a blank master plate A (with the printing surface of 36 can body blanks) coated and printed on the inner and outer surfaces of each can body blank C.
It is installed on the discharge side of the can body blank C of the second slitter E of the tandem slitter which has been conventionally used for cutting. That is, the blank original plate A is cut by the first slitter D of the tandem slitter to a width in the circumferential direction of the can body blank to form a horizontally long blank material B, and then the second slitter E is used to remove each of these blanks. It is cut into a height width of C and discharged as 6 can body blanks C in a row. On the discharge side of the second slitter E, six storage chambers (1) having upper openings for accommodating each can body blank C falling corresponding to the discharge position of each can body blank C were arranged in parallel. As shown in FIG. 3, a loading plate (2) is provided at the bottom of each accommodation chamber (1) to open when a predetermined number of can body blanks C are accommodated. A blank guide plate (3) and a blank regulation plate (4), and a blank support plate (5) at a position facing the intrusion side of the can body blank C.
Was set up. Then, at a position opposite to the entrance side of the can body blank C in each accommodation chamber (1), a selection rod (6) made of a non-magnetic metal having a gate shape is opposed to the entrance side of the can body blank C and is accommodated in the accommodation chamber (1 ) Is provided so as to be tiltable in the direction of the arrow a vertically above and below the entry track of the can body blank C which projects over substantially the entire length and pivotally supports the root portion (7) thereof to enter and fall into the accommodation chamber (1).

A cam arm (9) fixed to a shaft (8) that pivotally supports the root (7) of the sorting rod (6) has a piston rod of an air cylinder as a drive device (10) for vertically tilting the sorting rod (6). (11)
It was rotatably connected with. The sorting rod (6) is moved downward by 5 to 10 degrees from the horizontal axis by the operation of the driving device (10), and then the horizontal axis is moved by the operation of the driving device (10) after a lapse of a predetermined time by a timer. It was adjusted to move upward by 15 ° and stop.

A moving surface (12) consisting of an endless belt is wound between a pair of pulleys (13) and (14) so that it is always rotated by a driving device (not shown), and the rear surface of the moving surface (12) is permanently rotated. A defective can body blank discharging device (16) equipped with a magnet (15) is rotatably supported by a supporting arm (18) with respect to the machine body (17), and is placed on a sorting rod (6) of each accommodation chamber (1). It is provided so as to be movable along the moving position. When the moving surface (12) is moved along the selection rod (6), the movement of the selection rod (6) with respect to the horizontal axis moves in the same direction as the tilted position of the selection rod (6) with respect to the horizontal axis. It is provided at an angle of 5 ° to 10 ° with respect to the horizontal axis in the same direction as the inclined position. Therefore, as shown in the second illustration, the moving surface (12) substantially follows the inclination of the sorting rod (6), but each sorting rod ( The tip of 6) was adjusted so that it was close to the moving surface (12), and the root side of each sorting rod (6) was at a position distant from the tip.

The operation control device (19) of the selection rod (6) of each storage chamber (1) is provided with a defective can body blank elimination key (20) corresponding to the position of each can body blank C obtained by dividing the blank original plate 36 into 36 The blank cut by the first slitter D when the key (20) is selected and entered according to the information that the defective can barrel blank position is confirmed in advance before being fed to the tandem slitter for cutting into the barrel blank C. A control signal is given to operate the sorting rod (6) according to the order (lx) of the material B and the position nx to be cut by the second slitter E. That is, the key (20) according to the position of the defective can body blank.
When is selected and pressed, the sensor (21) provided at the passage position of the blank material B to the second slitter E counts the number of passed blank materials B and the passage of the lxth blank material B of the key (20) is detected. Then, the blank B is inserted into the second slitter E, and the cam roll (22) provided on the drive shaft F of the cutter of the second slitter E rotates to make contact with the sensor switch (23) to operate it. And the driving device (10) of the selection rod (6) at the nx position is activated. Next, the operation of the embodying apparatus will be described as follows.

The blank original plate A is coated and printed on the inner and outer surfaces, and the blank original plate A is provided with a printing surface for 36 can body blanks. At this stage, the inspector judges the quality of each printing surface of the blank blank A for each can body blank, and the defective can body blank position lx-nx is written on the check sheet.

Then, prior to the cutting of the blank original plate A by the tandem slitter, according to the check sheet, the defective can body blank elimination key (corresponding to the position l-n of the can body blank of the defective printing surface of the operation control device (19) ( 20) is pressed to activate the control device (19). When the blank original plate A is cut by the first slitter D of the tandem slitter to form a blank material B and sequentially fed to the second slitter E, the sensor (21) detects passage of the lxth blank material B, Then, the blank material B is inserted into the second slitter E and the drive shaft F of the cutter of the second slitter E is inserted.
When the cam roll (22) provided at the position rotates and comes into contact with the sensor switch (23), the cam switch (23) is operated to activate the driving device (10) of the sorting rod (6) at the n position. As a result, the sorting rod (6) at the nx position is the second in the defective can body blank C of 1 to n.
Before being cut by the slitter E and being discharged into the n-th storage chamber (1), it is tilted to a position below the locus of entry of the defective can body blank C and stands by. Then, when the defective can body blank C is discharged from the second slitter E and enters as shown by C ₁ in FIG. 3 and is placed on the waiting sorting rod (6), the sorting rod (6) is moved upward. Rapidly tilt to and flip up the defective can body blank C. The defective can body blank C that has been flipped up is attracted by the permanent magnet (15) of the moving surface (12) of the defective can body blank removing device (16) and is moved laterally to the extreme end of the moving surface (12). Is dropped and eliminated. On the other hand, when the non-defective can body blank C is discharged from the second slitter E, the sorting rod (6) of the accommodating chamber (1) corresponding to the blank C.
Is inoperative above the falling trajectory of the blank C, the blank C drops and is stored in the storage chamber (1).

In the above-described apparatus, the selection rod (6) is set to be 5 ° to 10 ° downward from the horizontal axis in the standby state. However, in this case, the defective can body blank becomes the selection rod (6). When falling, the sorting rod (6) intrudes downward and receives the tip of a defective can body blank and slides on the sorting rod (6), so that the tip is on the receiving plate (5) on the front wall of the storage chamber (1). By hitting, it can be prevented from bending. If the downward angle of the sorting rod (6) is 5 ° or less, the receiving effect of the sorting rod (6) is not given, and if it is 10 ° or more, the receiving angle is large, and the sorting rod (6) is raised to remove it. The work stroke decreases as the stroke to tilt to becomes large. Further, the moving surface (12) of the defective can body blank removing device (16) is provided at an angle of 5 ° to 10 ° in the same direction as the upward tilting position of the sorting rod (6). Since the tip of each sorting rod (6) is close to the moving surface (12) and the root side of each sorting rod (6) is farther than the tip, it bounces most when the sorting rod (6) tilts upward. The can body blank placed on the tip end of the sorting rod (6) to be lifted is easily attracted by the permanent magnet (15) of the moving surface (12) and then the other portion is attracted, so that the moving surface is surely moved. (12)
The blank can be transferred to.

As is clear from the above description, according to the present invention,
On each of the canister blanks, a storage rod that protrudes in the intrusion direction of each canister blank and opposes the intruder trajectory of each canister blank is provided in a tiltable manner above and below the intruder trajectory of each canister blank. A driving device is provided that tilts each of the sorting rods located at the position below the intrusion trajectory, mounts the can body blank and then inclines above the intrusion trajectory, and moves along the upper limit position of each sorting rod. Since a defective can body blank excluding device equipped with a permanent magnet is provided in the device, when the defective can body blank is about to drop into the storage chamber, the sorting rod is operated by the drive device to flip up the blank, and The defective can body blanks can be reliably sorted out by adsorbing them on the moving surface of the excluding device and removing them, and when a non-defective can body blank enters the accommodation chamber, it is dropped into the accommodation chamber without operating the drive device. so In addition, since the defective can body blank is flipped up and removed by the removing device, the sorting process of a plurality of can body blanks can be performed for each of the storage chambers in parallel, and the work efficiency is good. There is an effect that it is possible to provide an optimal can barrel blank selection device to be attached to a conventional blank cutting device such as a tandem slitter.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a plan view, FIG. 2 is a front view, and FIG. 3 is III of FIG.
FIG. 4 is a diagram showing a forming process of a conventional can body blank, taken along line III-III. B: can barrel blank, C: blank material (1) ... accommodation chamber, (6) ... sorting rod (10) ... drive device, (12) ... moving surface (15) ... permanent magnet, (16) …… Blank device for removing blanks from defective cans

Claims (1)

[Claims] 1. A storage chamber group which is provided at a position where a plurality of can body blanks are cut into each can body blank and discharged in a substantially horizontal state in a row state, and in which each can body blank is inserted and accommodated. , A selection rod pivotally supported at a position opposite to the invasion side of the can body blank in each storage chamber, the tip facing the intrusion side, and tiltable over the intrusion trajectory of the can body blank vertically, and each selection rod. A drive device that tilts from a position above the intrusion trajectory to a position below the intrusion trajectory to mount the can body blank and then inclines above the intrusion trajectory, and on a transport surface provided at a position above each sorting rod. A can body blank sorting device comprising: a defective can body blank removing device having a permanent magnet attached thereto.