JPH06144563A - Transfer of article - Google Patents

Abstract

PURPOSE:To prevent the generation of the troubles such as the failure of attraction and turning-down of a can, etc., during the transfer between conveyors, by comparing the shift head standard timing signal and the shift head position phase detection signal and acceleration/deceleration-driving a driving motor M a shift head until both the signals accord. CONSTITUTION:A can 1 whose outer surface at the trunk part is applied with printing by a printing press is transported in a prescribed can pitch by a chain conveyor 10, and fed onto a feed conveyor 11. The transfer speed of the feed conveyor 11 is smaller than that of the chain conveyor 10. Then, the transfer head position phase detection signal 32c outputted from a photoelectric switch 32 installed in the driving system for the feed conveyor 11 is inputted into a sequencer 55 installed in the driving system for the chain conveyor 10. In the sequencer 55, the transfer head standard timing signal 56 and the transfer head position phase detection signal 32c are compared, and if the signal 32c deflects from the signal 56, a motor 44 is acceleration/deceleration-driven until both the signals accord. Accordingly, the influence of the deflection of position of the can can be eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article transfer method for transferring an article such as a seamless can printed on the outer surface in a single row from a conveyer in a single row to a conveyor such as an oven conveyor in a double row.

[0002]

2. Description of the Related Art For transferring an article such as a seamless can printed on the outer surface in a single row from a first conveyor for transferring the article in a single row, to a second conveyor such as an oven conveyor in a double row,
A transfer conveyer that draws a turn-shaped trajectory and swings has been proposed (for example, Japanese Patent Publication No. 53-29902). The transfer conveyor vacuum-adsorbs the article when it reaches a position in the same direction and at the same speed as the first conveyor, and releases the vacuum when it reaches a position almost parallel to the second conveyor to transfer the article to the second conveyor. Move to the top.

Due to the convenience of the preceding steps such as the printing step, the transfer speed (number of articles / minute) of the third conveyor for feeding the articles into the first conveyor sometimes changes. When the transfer speed is high (for example, 1000 to 1500 pieces per minute), when such a change in the transfer speed occurs, the transfer speed of the first conveyor and the third transfer speed are increased.
It is easy for the transfer head to be not directly above the article when the transfer conveyor picks up the article on the first conveyor due to the deviation of the transfer speed of the conveyor. In such a case, troubles such as suction leakage of articles and falling over tend to occur. However, there have been no proposals for such speed control and adsorption timing control.

[0004]

SUMMARY OF THE INVENTION According to the present invention, there is provided a third conveyor for feeding articles to a first conveyor for transporting articles in a single row.
It is an object of the present invention to provide an article transfer method in which even if the transfer speed of the conveyor changes, the transfer from the first conveyor to the second conveyor in a double row state without causing troubles such as suction leakage and falling .

[0005]

According to the article transfer method of the present invention, a turn-shaped locus is formed from a first conveyor for transferring articles in a single row by a drive motor for driving the first conveyor via a link mechanism. Draw and swing, and at the time of adsorption, a transfer head that moves in the same direction and at the same speed as the first conveyor simultaneously adsorbs a plurality (f) of articles and moves in a direction perpendicular to the first conveyor. In the method of transferring articles to the second conveyor in a double row state, based on a machine timing signal based on a rotation angle sensor, which is provided in a drive shaft system of a third conveyor for feeding articles to the first conveyor. The photoelectric switch for detecting the transfer head reference timing signal formed as described above, and the timing flag detection unit that rotates with the drive shaft of the link mechanism and has f detection units at equal intervals along the circumferential direction. And the transfer head position / phase detection signal based on the output signal of the sensor, the drive motor is accelerated / decelerated until the two signals match, and the first conveyor transfer speed (number of articles / minute) is set to the third value. The transfer speed (number of articles / minute) of the conveyor is substantially the same.

The transfer head is provided with a plurality of (f) suction tools arranged at a constant pitch P, and the article has a pitch P.
When the transfer head is located directly above the first conveyor by adjusting the position of the sensor such as a photoelectric switch with respect to the timing flag when the transfer head is located on the first conveyor, the suction tool is directly above the corresponding article. It is preferable that

Further, when the transfer head reaches the position of the swing angle corresponding to a time point that is earlier than the suction time point by a predetermined suction delay time, the rotation provided on the drive shaft of the link mechanism that swings the transfer head. It is desirable to input the suction ON signal to the suction tool based on the signal output from the angle sensor so as to suction the article when the suction tool comes directly above the article.

[0008]

The transfer head reference timing signal is formed on the basis of the machine timing signal based on the rotation angle sensor provided on the drive shaft system of the third conveyor for feeding articles to the first conveyor. By comparing this transfer head reference timing signal with the transfer head position / phase detection signal based on the output signal of the sensor that detects the detection part of the timing flag that rotates with the drive shaft of the link mechanism that swings the transfer head, both signals are compared. The transfer head drive motor is accelerated and decelerated until they match so that the transfer speed of the first conveyor is substantially the same as the transfer speed of the third conveyor. Therefore, even if the transfer speed of the third conveyor changes, the transfer speed of the first conveyor automatically becomes substantially the same as the transfer speed of the third conveyor. Trouble such as falling is unlikely to occur.

The suction ON signal input to the suction tool is a link for swinging the transfer head when the transfer head reaches a swing angle position corresponding to a predetermined suction delay time determined by the characteristics of the suction tool. It is output based on the signal output from the rotation angle sensor provided on the drive shaft of the mechanism. That is, the suction ON signal is output by calculating the transfer speed of the first conveyor and the suction delay time with reference to the position of the swing angle. Therefore, even if the transfer speed of the first conveyor changes in accordance with the change of the transfer speed of the third conveyor, it is possible to adsorb the article when the adsorbing tool comes directly above the article. Therefore, during transfer, troubles such as suction leakage and falling over are unlikely to occur.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 2 denotes a steel seamless can 1 (hereinafter referred to as can 1; nominal diameter is, for example, 211 or 202) printed on the outer surface of a body by a can cylinder printer (not shown). Received from the machine, equidistant (pitch 13
(3.35 mm) is a pin chain conveyor which is externally inserted into a pin tip 2a and is transferred in the direction of arrow A, via a sprocket (not shown) that operates in conjunction with a drive shaft (not shown) of the printing press. Is driven. Reference numeral 3 denotes a bottom (can bottom) guide, which is a surface 3 on the can 1 side.
A large number of small holes (not shown) are formed in a, and air is blown out from the small holes to press the can bottom 1a against the pin tip 2a so that the can 1 does not come off the pin tip 2a and fall. . . Below the bottom guide 3, a flat surface portion 7a extending in the direction of the extension surface of the surface 3a of the bottom guide 3,
A can strip device 8 having a guide surface 7 composed of an arcuate portion 7b and a horizontal portion 7c is arranged.

Inside the guide surface 7, there is provided a magnet array 9 composed of a plurality of permanent magnets (for example, ferrite) arranged in parallel with the guide surface 7 as a whole. The end permanent magnet 9a, which is disposed above the horizontal portion 7c, is located at the upper left so that the rear end thereof is slightly away from the guide surface 7. 10 is the magnetic attraction of the can 1 along the guide surface 7,
It is a flat top chain conveyor made of resin to be transferred. The chain conveyor 10 is driven by the pin / chain conveyor 2 through the sprocket 6, the chain 5 and the intermediate connecting shaft by the timing belt 4,
The pin / chain conveyor 2 is driven by being provided with an appropriate speed ratio. The appropriate speed ratio mentioned above means that the can 1 conveyed by the pin / chain conveyor 2 is gradually inclined while the can 1 is adsorbed on the can bottom 1a by the chain conveyor 10 and passes along the guide surface 7. It is a speed ratio defined so as to always keep a position away from the can wall so that the pin 1 does not hit the can 1 in the process of being pulled out from the pin chip 2a. In this embodiment, the chain conveyor 1
0 is driven at a speed such that the can pitch is 122 mm.

Reference numeral 11 denotes a horizontal foot conveyor made of a resin flat top chain, which is arranged below the horizontal portion 7c of the guide surface, and is decelerated by a motor 44 for driving the transfer head 14 described later. Driven by a machine and a connecting mechanism (not shown), the can 1 is moved in the direction of arrow B at a speed lower than that of the chain conveyor 10 (m / min).
Transfer at a can pitch p of mm (see FIG. 3). Horizontal part 7c
The space between the lower surface of the chain conveyor 10 and the upper surface of the foot conveyor 11 is set to be slightly larger than the height of the can 1 (for example, about 3 to 5 mm larger). Inside the foot conveyor 11, a magnet row 12 composed of a plurality of permanent magnets (for example, ferrite) arranged in parallel with the transfer surface as a whole is provided with a weak attracting force that does not cause unnatural stumbling to the can 1. Has been. Permanent magnet 9a
The lower permanent magnet 12a is of a type having a relatively strong attracting force, and is located on the upper left side so as to be substantially parallel to the permanent magnet 9a. While the can 1 moves along the horizontal portion 7c, the suction force on the chain conveyor 10 gradually weakens, while the suction force on the foot conveyor 11 gradually increases, so that the transfer of the can 1 to the foot conveyor 11 is smooth and stable. This is done so that it will be carried out. 12b is a shield plate.

The transfer device 13, the detailed structure of which is shown in FIGS. 3 and 4, is placed on the foot conveyor 11 at regular intervals in a single row and is being transferred.
The number of the cans 1 will be transferred from the foot conveyor 11 at the same time to the oven conveyor 15 made of stainless steel net extending in the direction of arrow C perpendicular to the foot conveyor 11 (FIG. 2). reference). The transfer head 14 of the transfer device 13 moves the foot conveyor 11 to the oven conveyor 15 in the width direction 1
The cans 1 transferred and placed seven by one pass through an oven (not shown) to dry and cure the printed film on the body.

The transfer head 14 has, as shown in FIG.
The 17 electromagnets 16 for magnetically attracting the can bottom 1a have 9
Cans 1 on the foot conveyor 11 with a pitch p of 5 mm
It is built in at equal intervals so that the distance p between the axes is equal to the distance p between the axes. Four adjacent electromagnets 16
It is connected to the power supplies 64 and 65 (FIG. 8) so that it may operate as a set of electromagnet groups (for example, 16a). However, the electromagnet 16b at the end is independently operated so that it operates independently.
Connect to 5. A resin-coated glass fiber film is attached to the lower surface of the electromagnet 16 in order to reduce the influence of residual magnetism and improve the can separation when the can is separated. The space between the can bottom 1a and the lower surface of the transfer head 14 before adsorption is about 1 mm.

The transfer head 14 has two link mechanisms 17
It is supported by a and 17b, and draws a turn-shaped locus 18 (see FIG. 5) and swings between the foot conveyor 11 and the oven conveyor 15. The transfer head 14 magnetically adsorbs 17 cans 1 simultaneously at a position 18a on a locus 18 where the tangent line extends in the longitudinal direction of the foot conveyor 11 and the relative speed with the can 1 is 0, and the tangent line is the oven conveyor 1
5 at the position 18b on the locus 18 which extends in the longitudinal direction of 5 and has a relative speed to the oven conveyor 15 of 0.
To drop on the oven conveyor 15.

As shown in FIGS. 1, 3 and 4, the link mechanism 17a is attached to a support frame 20 of the machine frame 19 extending parallel to the foot conveyor 11. The link mechanism 17a is fixed to the support frame 20 and the crank pin 24 fixed to the peripheral edge of the crank disk 23 fixed to the lower end of the drive shaft 22 pivotally mounted to the bearing 21 fixed to the support frame 20. Vertical shaft 2 mounted on bearing 25
6, a swing arm 27 fixed to the lower end of the vertical shaft 26, a doglegged link 28 having a first end pivotally supported by the crank pin 24 at the lower portion, and an outer end of the swing arm 27 at the upper portion. Pin 2 which is fixed to the portion and whose lower end is axially supported by the bent portion of the link 28.
9 and a second end of the link 28, the transfer head suspending pin 30 is pivotally attached to the transfer head 14 and has a lower end fixed to the transfer head 14.

The crank pin 24 carries out a constant-speed circular motion about the drive shaft 22 once for 17 cans. Link mechanism 17
a cooperates with a link mechanism 17b, which will be described later, when the transfer head 14 comes directly above the foot conveyor 11, that is, when the pin 30 comes to the position 18a in FIG. 5, in the same direction and at the same speed as the foot conveyor 11. When the pin 30 moves to the position 18b in FIG. 5 after gradually decelerating, it moves in the same direction and at the same speed as the oven conveyor 15,
The position, size, etc. of each member are defined.

On the upper surface of the crank disk 23, there are 17 detecting portions 31a provided at equal intervals in the circumferential direction.
A timing flag 31 of the transfer head 14 is attached. The bracket 36 of the feed screw device 41 provided on the lower side of the support frame 20 includes the photoelectric switch 32 provided with the light emitter 32a and the light receiver 32b (FIG. 3) so that the light beam is blocked by the detector 31a. (Fig. 4). The position of the photoelectric switch 32 in the support frame 20 direction, that is, the relative position with respect to the detection unit 31a is adjusted by the feed screw device 41.

The link mechanism 17b has a timing flag 3 on the upper surface of a crank disk 43 corresponding to the crank disk 23.
1 is not attached, and the resolver 34 is attached via the coupling 35 to the upper portion of the drive shaft 42 corresponding to the drive shaft 22 except for the link mechanism 1
It has the same structure as 7a. The resolver 34 is a cam positioner 45 in the control panel (for example, manufactured by OMRON Corporation,
Model 3F88L-130) (see FIG. 8). The drive shaft 42 is rotated by a motor 44 (see FIG. 6) in a counterclockwise direction when viewed from above via a reduction gear and a gear (not shown). Drive shaft 2 of link mechanism 17a
2 is a gear 40 fixed to the drive shaft 42, an intermediate gear 39
And, through the gear 38 fixed to the upper portion of the drive shaft 22, the drive shaft 42 is rotated in the counterclockwise direction at the same speed and the same phase.

Next, the speed synchronization control will be described. Figure 6
In the figure, 50 is a resolver attached to the drive shaft of the can body printing machine, and the output signal 50a thereof is the cam positioner 5
Enter 1. The cam positioner 51 outputs a signal 51c of 1 pulse per can to the tachometer 52. Tachometer 52
Outputs a DC voltage of 7.5 V to the phase control compensator 53 for the signal 51c of 1500 cans / min. The phase control corrector 53 includes variable resistors 53a (1 kΩ) and 53b (5 k
Ω) and 53c (1 kΩ), and inputs the voltage (v ₁ ) between the slider 53b ′ of the variable resistor 53b and the terminal 53c ″ of the variable resistor 53c to the inverter 54. The output of the inverter 54 is Drive shaft 4 of transfer head 14
Input to the two-drive AC motor 44. Before working Accordingly, by moving the slider 53b 'manually, the terminal of the sequencer 55, but by adjusting the voltage v ₁ in the state OFF, the rotational speed of the drive shaft 42 of the transfer head 14, thus transferring the head The rocking speed of 14 (times / minute) can be approximately 1/17 of the delivery speed (cans / minute) of the printing press.
That is, the transfer speed of the conveyor 11 (can / min)
Can be made approximately equal to the transfer speed (cans / min) of the chain conveyor 10.

The rocking speed (times / minute) of the transfer head 14 is
Means for accurately 1/17 of the speed of the printing machine (can / min), and the transfer speed of the can conveyer 11 (can / min)
How to make (minute) exactly equal to the transfer speed (cans / minute) of the chain conveyor 10 will be described next. In FIG. 6, the transfer head position / phase detection signal 32 c output from the photoelectric switch 32 is input to the sequencer 55. The machine timing signal 51a and the clock pulse 51b (FIG. 7) output from the cam positioner 51 are also input to the sequencer 55. The terminal of the sequencer 55 is connected to the slider 53a 'of the variable resistor 53a, and the terminal is connected to the slider 53c' of the variable resistor 53c.

When the output signal of the terminal is ON, the terminal 53a "of the variable resistor 53a and the slider 53a 'are short-circuited.
Therefore, the voltage v ₁ slightly increases (for example, 10%) as compared with when both the output signals of the terminal and the terminal are OFF, and accordingly, the rotation speed of the motor 44 also increases by 10%, for example. This rate of increase is adjusted by manual movement of the slider 53a 'before the work. One terminal output signal is ON
, The terminal 53c ″ of the variable resistor 53c and the slider 53
A short circuit occurs between c '. Therefore, the voltage v ₁ is slightly decreased (for example, 10%) as compared with the case where both the output signals of the terminal and the terminal are OFF, and accordingly, the rotation speed of the motor 44 is also decreased by 10%. This reduction rate is also 5
It is regulated by the movement of 3c '. These adjustment rates (increase rate or decrease rate) are usually about ± 10% or less of the reference speed.

The machine timing signal 51a input to the sequencer 55 is a rectangular wave of one can and one pulse, as shown in FIG. The clock pulse 51b is a rectangular wave with one pulse of 5 degrees. The following processing is performed inside the sequencer 55. Time x 1 can (when can pitch p is 95 mm and, for example, 1400 cans are printed per minute,
42 msec) is measured. Next, the count value A of the counter A in the sequencer 55 is determined from Table 1 obtained as described below, and the counter A starts counting. After the counter A has finished counting, the counter B starts counting. At this point, the transfer head reference timing signal output 56 is turned ON. After the count of the counter B is completed (20 counts), the transfer head reference timing signal output 56 is turned off. In this way, the transfer head reference timing signal 56 of one pulse per can is formed.
The count number in the counter B is 20 regardless of the transfer speed.

[Table 1]

The sequencer 55 compares the transfer head reference timing signal 56 with the transfer head position / phase detection signal 32c, and when the signal 32c is ahead of the signal 56, turns on the output signal from the terminal, (In case of progress)
As shown in, the motor 44 is accelerated until both signals match. On the other hand, when the signal 32c is delayed from the signal 56,
Turn on the output signal from the terminal of the sequencer 55,
As shown in FIG. 7 (in case of delay), the motor 44 is decelerated until both signals match. The reason why the count value A is changed according to the transfer speed (can / min) is as follows. The position of the can 1 on the foot conveyor 11 is slightly different depending on the transfer speed because of the influence of the can 1 transferring from the chain conveyor 10 to the foot conveyor 11. For example, it has been found that a can position shift of about 13 mm occurs when the transfer speed is 1200 cans / min and the transfer speed is 1400 cans / min. This is because the influence of this deviation is eliminated and the can 1 is adsorbed directly below the electromagnet 16.

At the attraction position 18a of the locus 18, the photoelectric switch 32 is moved right and left in the figure as an attraction position phase control device for attracting and gripping the corresponding can 1 just below each electromagnet 16 of the transfer head 14. A manual handle (not shown) for rotating the connecting rod 37, the feed screw device 41 and the screw 41a of the feed screw device 41 provided at the end of the connecting rod 37 to move the bracket 36 is provided. (Fig. 4). By moving the photoelectric switch 32 by an appropriate distance within one detection unit 31a, the phase of the transfer head position phase detection signal 32c is changed, and the position of the can 1 on the foot conveyor 11 affected by the transfer speed is changed. , Can be adjusted directly below each electromagnet 16.

Table 1 is obtained as follows. First
(1) The count value A of the counter A is set to an appropriate value, for example, 27
Set to. Next, (2) the printing machine is operated at 1000 cans / min, and the screw 41a (FIG. 4) of the feed screw device 41 is rotated by a manual handle (not shown) to move the electromagnet 16 at the attraction position 18a of the trajectory 18 to the electromagnet 16. The position of the photoelectric switch 32 is adjusted so that the can 1 is directly below. The reading of a gauge (not shown) indicating the position of the photoelectric switch 32 at this time is recorded (Amm). After that, (3) Operate at a predetermined speed of 1100 cans / min or more, and again operate the photoelectric switch 3 with the manual handle.
Position 2 is adjusted as above and the gauge reading at this time is recorded (Bmm). (4) The difference (Cmm) between Amm and Bmm is obtained, and the count value A is determined as follows. When the can pitch p is 95 mm, the number of clock pulses 51b corresponding to one can (rising and falling)
Is 36, the pulse width (5 degrees) is 2.6 mm. For example, when C is 5.2 mm, 27 to 5.2 /
The value 25 obtained by subtracting 2.6 becomes the count value A. (5) For other printing machine speeds, the above-mentioned operations (3) and (4) are performed to obtain the count value A for each speed.

FIG. 8 shows an apparatus for controlling the timing of magnetically attracting the can 1 by the transfer head 14. The signal 34a of the resolver 34 attached to the drive shaft 42 of the link mechanism 17b that swings the transfer head 14 is transmitted to the cam positioner 4
Enter in 5. The electromagnet ON timing signal 45a and the electromagnet OFF timing signal 45b output from the cam positioner 45 are input to the sequencer 61.

From the sequencer 61 to the solid state relays 62 and 63 of the control unit 60,
The electromagnet ON signal 61a and the electromagnet OFF signal 61b are input. 64 and 65 are respectively 0 volt conductors 6
6 is a +24 volt and -5 volt conductor. The +24 volt conductor 64 connects to the 0 volt conductor 66 via the transistor switch 67 and the electromagnet group 16a. The -5 volt conductor is connected to the 0 volt conductor 66 via variable resistor 68, transistor switch 69, diode 70 and electromagnet group 16a. The solid state relays 62 and 63 are respectively a transistor switch 67 and a transistor switch 69.
Connect to the base of. Although not shown, the control unit 6 is the same as the control unit 60 except that it has four electromagnets 16 and one electromagnet 16b.
A control unit similar to 0 is connected to the sequencer 61.

Signal 3 from resolver 34 on drive shaft 42
4a is read by the cam positioner 45 as the rotation angle of the drive shaft 42, that is, the position of the pin 30 on the locus 18 (see FIG. 5). Now, the pin 30 is at the position of FIG. 5, that is, the tangent line of the locus 18 at the center of the pin 30 is the transfer head 14.
Position 18a when extending in the longitudinal direction of 360 degrees (0 degrees)
And The adsorption delay time t ₁ from the output of the electromagnet ON signal 61a from the sequencer 61 to the adsorption of the can 1 by the electromagnet 16 differs depending on the excitation delay time of the electromagnet 16, the distance between the transfer head 14 and the can 1, and the like. However, it is usually in the range of about 50-80 msec. This adsorption delay time t ₁
Is determined in advance by an experiment. When the can transfer speed on the foot conveyor 11 is S (can / min), the adsorption delay time t ₁ corresponds to t ₁ * 360 * S / 17 (f) / 60 degrees. For example, if the can transfer speed is 1500 cans / minute, 6
An adsorption delay time t ₁ of 0 msec corresponds to 32 degrees. Therefore, in order to adsorb the can 1 at the position of 360 degrees, the position 18c on the locus 18 of 328 degrees, which is the difference between 360 degrees and 32 degrees, is used.
Then, the sequencer 61 may output the electromagnet ON signal 61a. FIG. 9 shows an excitation timing chart in this case.

When the can transfer speed is 1500 cans / minute, the magnetic adsorption completion position is 360 degrees, and the adsorption delay time t ₁ is 60 ms, the cam positioner 45 is turned on as shown in FIG.
The timing signal 45a is set to be input at 296 degrees (a value obtained by subtracting 32 degrees from 328 degrees) to 328 degrees. Then, as shown in FIG. 9, the electromagnet is turned on by the sequencer 61 at the time of 328 degrees when the ON timing signal 45a falls.
Signal 61a is output and solid state relay 62
When the transistor switch 67 is turned ON, a voltage of +24 V is applied to the electromagnet 16, and when the pin 30 of the transfer head 14 reaches the 360-degree position 18a, the adsorption is completed.

The fall position 18b on the locus 18 is 14
Corresponds to 5 degrees. Therefore, as shown in FIG. 9, the cam positioner 45 is set to output the OFF timing signal 45b at the time of 145 degrees. Then, the OFF timing signal 45b rises as shown in FIG.
At 45 degrees, the electromagnet ON signal 61a turns OFF.
As shown in FIG. 9, the sequencer 61 includes an electromagnet OF.
The F signal 61b is set to be output. When the electromagnet OFF signal 61b is output, the solid state relay 63 turns on the transistor switch 69,
A negative voltage is applied from the lead wire 65 for 100 msec with a delay of 20 msec from the time of 145 degrees, the residual magnetism of the electromagnet 16 is erased, and the transfer head 14 moves in the moving direction of the oven conveyor 15 while all the cans are being moved. 1 separates from the transfer head 14 and falls. The magnitude of the negative voltage is adjusted by the variable resistor 68.

When the can transfer speed is 1400 cans / minute, the adsorption delay time t _{1 of} 60 ms calculated as described above.
Corresponds to 30 degrees. Therefore, in order to adsorb the can 1 at the position of 360 degrees, the electromagnet is turned on from the sequencer 61 at the position on the locus 18 of 330 degrees, which is the difference between 360 degrees and 30 degrees.
It suffices to output the signal 61a. Therefore, in FIG.
As shown in Fig. 3, the electromagnet O from the sequencer 61 at the time of 330 degrees (the time 4 msec later than the case of 1500 cans / minute).
The N signal 61a is output, and the transfer head 14 attracts and drops the can 1 in the same manner as described above. The adsorption time can be set to the same position for various speeds and adsorption delay time t ₁ in the same manner as described above.

The sample can collecting signal 72 and the all can reject signal 73 are also input to the sequencer 61. Turns on the sequencer 61 when the sample can collection signal 72 is input.
Even if the timing signal 45a is input, the signal 61a is not output from the sequencer 61 only to the electromagnet 16b. The sample can sampling signal 72 is input when, for example, only the can 1 at the end is taken out and the good or defective printing is inspected. When the all-can reject signal 73 is input, even if the ON timing signal 45a is input to the sequencer 61, the sequencer 6
The electromagnet ON signal 61a is not output from 1 to all electromagnets 16. The all-can reject signal 73 is input until the work is stabilized, or when a trouble occurs in the printing machine during the work.

The operation will be described below. The can 1 whose outer surface has been printed by the printing machine is transferred from the pin / chain conveyor 2 to the chain conveyor 10, is conveyed at a can pitch of 122 mm, and is then fed to the foot conveyor 11. Since the foot conveyor 11 transfers the cans 1 at a pitch p of 95 mm, the transfer speed thereof is slower than the transfer speed of the chain conveyor 10. However, the control device shown in FIG. 6 controls the transfer speeds of the chain conveyor 10 and the foot conveyor 11 to be substantially the same regardless of the transfer speed (cans / minute) of the can 1 from the printing machine. Because of the magnet 9a and the magnet 12a,
There is no risk of jamming of the cans 1 during feeding, and the pitch p of the cans 1 on the foot conveyor 11 deviating from 95 mm.

The conveyor belt 1 emptied by the previous transfer head 14 can adsorption, rocking, can dropping and rocking.
When 17 cans 1 have been fed into and placed on the transfer can 14, the transfer head 14 reaches directly above the can row (that is, the pin 30 is shown in FIG.
Position 18a on the locus 18 of, and moves at the same speed (m / min) and in the same direction as the foot conveyor 11. Since the position of the photoelectric switch 32 with respect to the timing flag 31 is adjusted in advance, the electromagnet 16 comes directly above the corresponding can 1. Further, by the excitation control device shown in FIG. 8, the transfer head 14 magnetically attracts the can 1 at this time regardless of the transfer speed. The sucked can 1 is moved by the transfer head 14 that swings.
And move along the trajectory 18 at a reduced speed,
When the pin 30 reaches the position 18b, it is demagnetized and is dropped and transferred onto the oven conveyor 15.

The present invention is not limited to the above embodiment, and the number of articles to be adsorbed at the same time and the values such as the pitch p are appropriately determined according to the type of the apparatus and the working method. The suction by the transfer head 14 may be vacuum suction. In this case, the vacuum valve corresponds to the electromagnet.

[0037]

According to the present invention, the first conveyor moves to the second conveyor even when the transfer speed of the third conveyor for transferring the goods into the first conveyor for transferring the goods in a single row changes. In the double-row state, there is an effect that the transfer can be performed without causing troubles such as suction leakage and falling.

[Brief description of drawings]

FIG. 1 is a front view of essential parts of an example of an apparatus for carrying out the present invention.

FIG. 2 is a side view of a main part seen from the line II-II in FIG.

3 is a front view of the transfer device in the device of FIG. 1. FIG.

FIG. 4 is a plan view seen from the line IV-IV in FIG.

FIG. 5 is a view showing a swing locus of the transfer head.

FIG. 6 is a block diagram showing an example of a speed control device for a transfer head.

7 is a timing chart of an example of speed control of a transfer head by the apparatus of FIG.

FIG. 8 is a block diagram illustrating an example of a suction timing control device for a transfer head.

9 is a timing chart of an example of suction timing control of a transfer head by the apparatus of FIG.

[Explanation of symbols]

 1 Seamless Can (Article) 10 Chain Conveyor (Third Conveyor) 11 Feet Conveyor (First Conveyor) 14 Transfer Head 15 Oven Conveyor (Second Conveyor) 16 Electromagnet (Adsorption Tool) 17a Link Mechanism 17b Link Mechanism 18 Trajectory 22 Drive Axis 31 Timing Flag 31a Detection Section 32 Photoelectric Switch (Sensor) 32c Transfer Head Position Phase Detection Signal 34 Resolver (Rotation Angle Sensor) 44 Motor 50 Resolver (Rotation Angle Sensor) 50a Machine Timing Signal 50b Clock Pulse 56 Transfer Head Reference Timing Signal 61a Electromagnet ON signal (Adsorption ON signal)

Claims (3)

[Claims] 1. A first conveyor for transferring articles in a single row, a drive motor for driving the first conveyor oscillates along a trajectory in a turnip shape via a link mechanism, and the first conveyor at the time of adsorption. A plurality of (f) articles are simultaneously adsorbed by a transfer head that moves in the same direction and at the same speed as that of the first conveyor, and the articles are double-rowed on a second conveyor that moves in a direction perpendicular to the first conveyor. The first way to move
The transfer head reference timing signal formed based on the machine timing signal based on the rotation angle sensor, which is provided on the drive shaft system of the third conveyor that feeds articles to the conveyor, and rotates together with the drive shaft of the link mechanism. Then, the transfer head position / phase detection signal based on the output signal of the sensor such as a photoelectric switch that detects the detection portion of the timing flag having f detection portions at equal intervals along the circumferential direction is compared, and both signals match. The drive motor is accelerated and decelerated until
The conveyor transfer speed (number of articles / minute) of the above is substantially the same as the transfer speed (number of articles / minute) of the third conveyor. 2. A transfer head is provided with a plurality of (f) suction tools arranged at a constant pitch P, and an article has a pitch P.
When the transfer head is positioned directly above the first conveyor by adjusting the position of the sensor such as a photoelectric switch with respect to the timing flag, the suction tool is substantially mounted on the first conveyor. It is so that it is directly above.
Method of transferring goods as described. 3. A drive shaft of a link mechanism for swinging the transfer head when the transfer head reaches a position of a swing angle corresponding to a time point earlier than the suction time by a predetermined suction delay time. Based on the signal output by the rotation angle sensor,
The article transfer method according to claim 1 or 2, wherein an adsorption ON signal is input to the adsorption tool, and the article is adsorbed when the adsorption tool comes directly above the article.