JPH0626509Y2 - Turret winder air circuit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an air circuit for a nip roll in a turret winder for strips of film or the like.

(Prior Art) FIG. 2 shows an example of a nip roll air circuit of a conventional turret winder.

FIG. 3 is a structural diagram of an apparatus using the air circuit of FIG.

In both figures, 1 and 11 are a pair of nip rolls, which are mounted on the turret of the winder and are pressed against the spindles 2 and 12 around the fulcrums 5 and 15 by the air cylinders 3 and 13, respectively. The spindles 2 and 12 are mounted on the turret of the winder to wind the product.

Now, in the winding section having the above configuration, the spindle 2,
12 moves core holders 21 and 22, respectively, and
Retained by inserting at the two ends. Core holder 21,
22 can be moved by air cylinders 4 and 14, respectively, and by switching the manual switching valves 6 and 16, the core holder
21,22 movements can be carried out. Therefore, it is necessary to supply air to the respective manual switching valves 6, 16 from the air supply ports 10, 20.

On the other hand, each of the nip rolls 1 and 11 is used by pressing the film strip 29 wound on the corresponding spindles 2 and 12 by rewinding and cutting the film strip 29. , 11 are not intended to be pressed down at the same time for that purpose.

Nip rolls 1 and 11 are fulcrum by air cylinders 3 and 13, respectively.
It is possible to move around 5, 15 as the center of rotation, and by supplying air to the cylinder side of the air cylinders 3, 13, that is, by supplying air to the air supply ports 8 and 18 on the cylinder side, When air is discharged from the air supply ports 9 and 19, it can be pressed against the film strip 29.

Conversely, by supplying air to the piston rod side of the air cylinders 3, 13, that is, the air supply port on the piston rod side.
When air is supplied to 9,19 and the air is discharged from the air supply ports 8,18 on the cylinder side, the nip rolls 1,11 held by the film strip 29 move to the open side.

(Problems to be solved by the invention) In a conventional device of this kind, as shown in FIG. 2, the air inlets are at four positions on the cylinder side and piston rod side of each air cylinder 3,13 for each nip roll, and the air cylinder for the spindle. Four,
There is a problem in that a total of six locations are required, which is two locations for 14, and a complicated mechanism is required in the rotary bearing portions 23 and 24 of the turret.

The present invention has been made to solve the above problems, and an object thereof is to reduce the number of air inlets and to simplify the mechanism of the rotary bearing portion of the turret.

(Means for Solving the Problems) For this reason, the present invention relates to a winder for winding a strip of film or the like in which a turret is equipped with two or more core detachable air cylinders and two or more air cylinders for opening and closing nip rolls. ,
The air system on the open side of each nip roll and the corresponding air system on the air cylinder side for removing cores are connected via check valves, and the air system on the air cylinder side for removing cores is shared by the turrets. The air circuit of the turret winder is characterized in that the number of air supply ports to the air is reduced, and this is used as a means for solving the above problems.

(Operation) In a turret winder, for example, it is not necessary to nip two nip rolls when they are jointly used, while on the other hand, air must be blown to either of the open sides of the two air cylinders that open the nip rolls. Is being supplied.

Therefore, in the present invention, the air system of two air cylinders for nip rolls is shared, and a check valve is interposed between the air system on the open side of each nip roll and the air system on the side of each corresponding core removing / attaching air cylinder. This prevents air from being supplied to and discharged from the air cylinder for removing the core from either of the air systems. As a result, since the number of air supply ports can be reduced in the turret rotary bearing portion, the mechanism of the turret rotary bearing portion can be simplified.

(Example) Hereinafter, a typical example of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, and since the portions denoted by the same reference numerals as those in FIG. 2 are the same as the conventional ones, the differences from the conventional ones will be mainly described.

That is, in the apparatus of the present embodiment, a manual switching valve for detaching the air system connected to the air supply port 9 of the air cylinder 3 on the side for opening the nip roll 1 and the spindle 2 corresponding to the nip roll 1 which have been conventionally configured separately. 6 is connected to the air system via the check valve 27, and the air system is connected to the air supply port of the air cylinder 13 on the side where the other nip roll 11 is opened and the spindle 12 corresponding to the nip roll 11 is attached / detached. Check valve between the air system to the manual switching valve 16 for
Connected via 28.

Furthermore, in the conventional device, air to the detachable manual switching valves 6 and 16 of the spindles 2 and 12 corresponding to the nip rolls 1 and 11 was sent from independent air supply ports 10 and 20, respectively. In the example, the manual switching valves 6 and 16 are configured to share one air system.

By the way, each nip roll 1, 11 is pressed against the film strip 29 only when the film strip 29 is rewound and cut as described above, and each nip roll
Since both 1 and 11 cannot be pressed at the same time, air is always supplied to either of the open side air supply ports 9 and 19 of the nip rolls 1 and 11.

On the other hand, the air cylinders 4 and 14 that move the core holders 21 and 22 that hold the spindles 2 and 12 are moved to the air cylinders as needed.
Air must always be supplied to operate 4,14.

Therefore, in this embodiment, as shown in FIG.
Connect a circuit that supplies air to 16 and connect both circuits by providing check valves 27 and 28 in the middle of the circuit from the air supply ports 9 and 19 on the nip roll opening side to the manual switching valve. Then, even if one of the nip rolls 1 and 11 is pressed against the film strip 29 and one of the air supply ports 9 and 19 is on the side for discharging the air, the manual switching valves 6 and 16 do not have air. Is continuously supplied, and the core holder 2 is operated via the air cylinders 4 and 14 at any time by operating the manual switching valves 6 and 16.
It is possible to move the spindles 1 and 22 and detach the spindles 2 and 12.

(Effect of the Invention) As described above in detail, according to the present invention, it is possible to reduce the number of air supply ports in the turret rotary bearing portion, and the structure of the air supply portion of the rotary bearing portion can be simplified.

[Brief description of drawings]

FIG. 1 is an air circuit diagram showing a typical embodiment of the present invention, FIG. 2 is a conventional air circuit diagram, and FIG. 3 is a schematic configuration diagram of a turret portion. Description of the main parts of the figure 1,11 ...... Nip roll 2,21 ...... Spindle 3,13 …… Air cylinder 4,14 …… Air cylinder 5,15 …… Nip roll arm fulcrum 6,16 …… Manual switching valve 8, 9,19,20 …… Air supply port 21,22 …… Core holder 23,24 …… Rotary bearing 27,28 …… Check valve 29 …… Film strip

Claims (1)

[Scope of utility model registration request] 1. A winder for winding a strip of film or the like in which a turret is equipped with two or more air cores for detaching and winding a core and two or more air cylinders for opening and closing nip rolls, and an air system on the open side of each nip roll It is possible to reduce the number of air supply ports to the turret by connecting the air systems on the air core side for removing and installing cores via check valves and sharing the air systems on the air cylinder side for removing and installing cores. The air circuit of the characteristic turret winder.