JPH0448839Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an automatic removal device for masking caps for painting drums.

[Conventional technology]

Since paint enters through the mouthpiece opening of the top plate when painting the outside of the drum, a masking cap is attached to the mouthpiece opening.

The above masking methods include spring type, screw type, seal cap, etc.

[Problem that the invention attempts to solve]

Since the masking caps have to be removed manually one by one, this is troublesome and requires considerable labor.

[Means for solving problems]

In order to solve the above-mentioned problems, this invention has two conveyance paths on the left and right that are installed to convey painted drums in an upright position, and when the drums reach a predetermined position along the conveyance path, the drums are transported for a predetermined period of time. A first stopper, a second stopper, and a third stopper provided to stop the drum can, and a first stopper provided between the conveyance path so as to be able to rise and fall so as to push up the drum can stopped by the second stopper and the third stopper, and drive it in one direction. a rotary table and a second rotary table;
Directly above the first rotary table and the second rotary table, there is a roll placed in a fixed position to avoid collision with the masking cap of the mouthpiece and in contact with the top plate of the drum, and one masking cap is placed on the side of the first rotary table. a detection device provided to stop the drive of the first rotary table upon contact with the second rotary table;
A stopper is installed directly above the rotary table to stop the masking cap in a fixed position by coming into contact with the outer periphery of the cap as the drum rotates, and an elevating body is provided directly above the masking cap. A masking cap detachment device consisting of a pair of opening/closing claws provided to later close to engage with the lower edge of the masking cap, and a discharge device provided to receive and discharge the masking cap that falls from the detachment device when the cap stops rising. It consists of a device.

[Effect]

The coated drums transferred along the conveyance path are stopped at fixed positions by a first stopper, a second stopper, and a third stopper, respectively.

When the drum is stopped by the second stopper, the first rotary table is raised to bring the top plate of the drum to be pushed up into contact with the roll and rotate the drum.

When the detection device detects the cap as the drum rotates, the drive of the first rotary table is stopped and the first rotary table is lowered.

When the drum is stopped by the third stopper, the second rotary table is raised to bring the top plate of the drum to be pushed up into contact with the roll, and to rotate the drum.

As the drum rotates, the outer periphery of the mouthpiece comes into contact with the stopper, the masking cap of the drum is stopped in a fixed position, and the drive of the second rotary table is stopped.

Next, when the elevating body descends to a fixed position, the pair of claws closes and engages the lower edge of the masking cap.

When the elevating body rises, the masking cap that engages with the pawl is removed from the base.

Since the claw is opened when the elevating body stops rising, the falling masking cap is ejected by the ejecting device.

Note that after the masking cap is removed, the second rotary table is lowered to place the drum on the transport path, and since the third stopper has released the drum can, the drum is discharged from the transport path.

〔Example〕

In the figure, reference numeral 1 indicates two conveyance paths on the left and right, which are provided to convey the painted drum A in an upright state.

In the illustrated case, the conveyance path 1 includes a pair of left and right head sprockets 4, 4 that drive the head side from a motor 2 via a transmission mechanism 3, a pair of left and right tail sprockets 5, 5, and the head sprocket 4. It consists of a chain 6 extending over a tail sprocket 5 and a tail sprocket 5.

Further, in the middle of the conveyance path 1, a first stopper 7, a second stopper 8, and a third stopper 9 are provided to stop the drum can A for a predetermined time when it reaches a predetermined position.

The above-mentioned first stopper 7, second stopper 8, third stopper
The stopper 9 includes a rotating shaft 11 that is rotated clockwise or counterclockwise by a motor 10 in the illustrated case, and a rotor 13 that is supported via a horizontal pin on the tip of an arm 12 extending from the upper end of the rotating shaft 11. When the rotating shaft 11 is rotated so that the left and right rotors 13 face inward, the surface of the drum A on the outer circumferential traveling direction side comes into contact with the rotor 13, and the drum A stops. Although the drum A is unstopped by rotating the rotation shaft 11 by 90 degrees, it may be stopped by other methods.

Further, below the drum A stopped by the second stopper 8 and the third stopper 9, a first rotary table 14 and a second rotary table 15, which can be raised and lowered to push up the drum A and drive it in one direction, are provided.
is provided.

Furthermore, a roll 16 is provided directly above the first rotary table 14 and the second rotary table 15, and is arranged at a fixed position so as to avoid collision with the masking cap C of the mouthpiece B and contact the top plate a of the drum can A. ing.

As shown in FIG. 7, when the drum can A is stopped by the second stopper 8 and the third stopper 9, the first rotary table 14 and the second rotary table 15 move the cylindrical body 18 together with the piston 17 by press-fitting fluid. Since the inner peripheral protrusion 19 of the cylindrical body 18
The spring 21 is compressed through the seat 20 that engages with the
As a result, the first rotary table 14 and the second rotary table 15 are pushed up via the spring 21, and the cylindrical body 1
A cylindrical body 23 that rotates freely via a bearing 22 is inserted into the cylindrical body 23, and a shaft member 24 that rotates at a fixed position is inserted into the cylindrical body 23. 24 worm gears 27 are engaged with each other, and the cylindrical body 2
Since the rotation of the shaft member 24 is transmitted to the cylindrical body 23 via the key 28 by allowing the shaft member 24 to slide in the axial direction, variations in the length of the drum can A can be absorbed by the spring 21. .

Furthermore, a detection device 29 is provided directly above the first rotary table 14 for stopping the drive of the first rotary table 14 by coming into contact with one of the masking caps C.

In the illustrated case, the above-mentioned detection device 29 is adapted to actuate a limit switch when a large-diameter masking cap C comes into contact with it.

Furthermore, a stopper 30 is provided directly above the second rotary table 15 to abut the outer periphery of the mouthpiece B as the drum A rotates and stop the masking cap C at a predetermined position.

The stopper 30 described above is composed of a plate-like body 31 arranged in the front and rear as shown in FIG. 4, and a V-shaped notch 32 provided on the end face of this plate-like body 31.
The large-diameter cap B and the small-diameter cap B fit into the notches 32 of both plate-like bodies 31, and the V-shaped notch 32
The masking cap C is always stopped at a predetermined position.

Note that when the masking cap C stops at a fixed position, the drive of the drum can A is stopped.

In addition, the stopper 30 has a plate-like body 31 attached to the tip of an inverted L-shaped arm 34 whose end portion is pivotally supported via a pin 33, and the arm 3
The cap B is raised and lowered by the action of a cylinder 35 connected to the end of the cap B, and the cap B comes into contact with the stopper 30 when it stops descending.

Furthermore, a masking cap C release device 36 is provided directly above and behind the second rotary table 15.

The detachment device 36 includes a plate 39 that is raised and lowered via a rod 38 by the action of a cylinder 37;
A box 41 attached to this plate 39 via a rod 40, a through window 42 provided at an opposing position across the center of the bottom wall of this box 41, and both through windows 4.
2, a pin 44 that is rotatably attached to the upper surface of the bottom wall of the box 41, and a cylinder 45 supported by the box 41; It is composed of a link 48 that connects the lower end of the acting rod 46 and the ends of the claws 43, 43 via a pin 47. First, the box 41 is lowered to the home position by the action of the cylinder 37, and then by the action of the cylinder 45. When the rod 46 is raised, the claws 43, 43 rotate in the direction of closing each other, and the masking cap C
The leading edges of the pawls 43, 43 engage with the lower edge of the peripheral wall (as shown in FIG. 6).

When the box 41 is raised by the action of the cylinder 37, the masking cap C pulled up by the claws 43, 43 is removed from the cap B.

When the rod 46 is lowered by the action of the cylinder 45 after the box 41 has stopped rising, the claws 43, 4
3 opens, and masking cap C falls down.

The falling masking cap C is the ejection device 49
It is discharged by

As shown in FIG. 4, the discharge device 49 is configured to rotate an arm 51 by a motor 50 and wait a tray 52 provided at the tip of the arm 51 immediately below the masking cap C to be dropped. C, and then rotate the arm 51 to return, and immediately before completing the return, rotate the arm 51 by 90 degrees (the rotation method is to rotate the arm 51
The end of the masking cap C may be driven by a motor, etc.) to drop the masking cap C into the receiving box, and then the arm 51 is moved to return the receiving tray 52 to its original state.
There is a method of rotating the chute by 90 degrees, and a method of moving the chute to the drop point of the masking cap C to receive the load.

The masking cap C used is the spring type shown in FIG. 8, or the one with a slit shown in FIGS. 8 and 9.

[Effects] As described above, the automatic removal device for masking caps for painting drums according to this invention has the following effects:
Since the pawl is engaged with the masking cap and the masking cap is automatically removed from the base by the lifting of the pawl, efficiency is significantly improved and no labor is required, unlike manual removal.

In addition, since the drum is rotated by the first rotary table and the rotation of the drum is stopped by detecting the mouthpiece by the detection device, the rotation angle of the drum by the second rotary table can be reduced, further increasing efficiency. can do.

Furthermore, since the cap is stopped at a fixed position by the stopper, the claw can be reliably engaged with the masking cap.

Further, since the masking cap that has fallen is received by the discharge device, the masking cap can be reused.

[Brief explanation of the drawing]

Figure 1 is a side view of the automatic removal device according to this invention, Figure 2 is its front view, Figure 3 is its top view, and Figure 4 is its front view.
The figure is a plan view showing the stopper and ejection device, Figure 5 is a partially cutaway front view of the release device, Figure 6 is an enlarged vertical front view showing the drive of the claw, and Figure 7 is a vertical front view showing the main parts of the table. 8 is a longitudinal sectional front view of a spring-type masking cap, FIG. 9 is a longitudinal sectional front view of a masking cap having a slit, and FIG. 10 is a plan view of the same. A... Drum, a... Top plate, B... Cap, C
...Masking cap, 1...Transport path, 2...
Motor, 3... Transmission mechanism, 4... Head sprocket, 5... Tail sprocket, 6... Chain, 7... First stopper, 8... Second stopper,
9...Third stopper, 10...Motor, 11...
...Rotation axis, 12...Arm, 13...Rotor, 1
4...First rotary table, 15...Second rotary table, 16...Roll, 17...Piston, 18
... Cylinder body, 19 ... Protrusion, 20 ... Seat, 21 ...
... Spring, 22 ... Bearing, 23 ... Cylindrical body,
24... Shaft material, 25... Shaft, 26... Worm foil, 27... Worm gear, 28... Key,
29...detection device, 30...stopper, 31...
Plate-shaped body, 32... Notch, 33... Pin, 34...
...Arm, 35...Cylinder, 36...Detachment device, 37...Cylinder, 38...Rod, 39...
... plate, 40 ... rod, 41 ... box, 42 ... through window, 43 ... claw, 44 ... pin,
45...Cylinder, 46...Rod, 47...Pin, 48...Link.

Claims (1)

[Scope of utility model registration request] Two conveyance paths on the left and right provided to convey painted drums in an upright state, and a first stopper and a second stopper provided to stop the drums for a predetermined period of time when the drums reach a predetermined position along the conveyance path. A third stopper, a first rotary table and a second rotary table which are provided between the conveyance path so as to be able to rise and fall so as to push up the drum can stopped by the second stopper and the third stopper and drive it in one direction; Directly above the table and the second rotary table, there is a roll placed in a fixed position so as to avoid collision with the masking cap of the mouthpiece and in contact with the top plate of the drum, and on the first rotary table side there is a roll placed in contact with one of the masking caps. a detection device provided to stop the drive of the one-turn table;
A stopper is provided directly above the second rotary table to stop the masking cap in a fixed position by contacting the outer periphery of the cap as the drum rotates, and an elevating body is provided directly above the masking cap. A masking cap release device consists of a pair of opening/closing claws that are provided to open and close to engage the lower edge of the masking cap after descending, and a masking cap that receives and discharges the masking cap that falls from the release device when the cap stops rising. Automatic removal device for masking caps for painting drums, consisting of an installed discharge device.