JPH0155174B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to an air compressor that can reliably cut and wind a film without stopping the operation while winding the film onto a winding roll. Regarding a feed type winder.

[Prior Art] In a winding machine that sequentially winds the film on the winding rolls by changing the winding rolls, after cutting the film, the winding machine is not stopped.
A new take-up roll is wound with the cut end of the film.

A conventional winding machine of this type will be explained with reference to FIG.

A take-up roll b is brought into contact with the upper surface of the drive roll a which is rotated by an appropriate means, and the take-up roll b
The shaft c is fitted and supported in a notch e in a swing arm d which is pivotally supported by the shaft of the drive roll a.

The front end of the film g fed by the pair of upper and lower feed rolls f, f adheres to the adhesive tape h wound around the take-up roll b, and is wound around the take-up roll b.

Thereafter, by the rotation of the swing arm d, the axis c of the take-up roll b is moved onto an upwardly arcuate rail j located in front of the take-up roll b.

As the winding operation progresses, the winding radius of the film g increases, and its axis c rises along the rail j.

When a predetermined length of film g is wound onto the first take-up roll b, a new take-up roll b is brought into contact with and rotated on the driving roll a, as described above, while That is, the feed roll f,
A cutter k provided on the f side cuts the film g in the width direction, and air is blown from a nozzle m above the guide plate l provided near the cutter k, and the cut film g is cut by the force of this air. The front end of the roll is advanced toward the contact portion between the take-up roll b and the drive roll a, and the roll is wound onto a new take-up roll b.

[Problem that the invention seeks to solve]

In an air-feeding film winder with the structure described above, there is no gap between the take-up roll and the drive roll, so the air from the nozzle that pushes the film collides and becomes turbulent. As a result, the front edge of the film may become wavy, wrinkled, or sag.

Furthermore, if the front end of the film falls between the take-up roll and the drive roll at the wrong time, winding becomes impossible and the operation must be stopped and restarted.

Furthermore, because the adhesive of the adhesive tape adheres to both edges of the cut end of the film, the rear end of the previous film adheres to the new take-up roll, causing the previous take-up roll to be rewound. Or the leading edge of the new film may wrap around the drive roll.

The cut portion of the film is slightly slanted to facilitate winding, but this portion cannot be used and must be discarded, which is uneconomical.

(Means for Solving the Problems) The present invention has been made to solve the various problems mentioned above, and it is possible to bring the take-up roll into contact with or separate from the drive roll. It is configured so that it can be done.

That is, the present invention provides a drive roll, a take-up roll that is rotated in contact with the upper surface of the drive roll and winds the film on its circumferential surface, and a take-up roll that is rotated in contact with the upper surface of the drive roll and winds the film around the circumferential surface of the take-up roll. In an air-feeding film winding machine, the film is equipped with a cutting mechanism for cutting the film, and an air nozzle slightly in front of the cutting mechanism for blowing air onto the film and sending it forward. A take-up roll having an adhesive surface to which it can be attached, an air cylinder that can raise the take-up roll relative to a drive roll, and a cutter that can cut the film by reciprocating in the lateral direction in front of the take-up roll. a detection means for detecting the operation of the cutter; and when the detection means detects that the film has been cut by the cutter, based on the detection, the take-up roll is lowered by the air cylinder and brought into contact with the drive roll. and means.

[Effect]

When cutting a sheet, the take-up roll waits apart from the next drive roll, and when the cut end of the sheet reaches the drive roll, the take-up roll slides into contact with the drive roll by the lifting means. The next winding operation is started.

〔Example〕

The present invention will be explained in detail below based on the embodiments shown in FIGS. 1 to 3.

Reference numeral 1 denotes a frame. A drive roll 2 is pivotally attached to the frame 1, and the drive roll 2 is rotated around a horizontal axis by a drive means (not shown).

Reference numeral 3 denotes a pair of left and right swinging arms located on both sides of the drive roll 2, and a vertical substrate 3a having an octagonal shape.
and a vertical stopper piece 3b projecting upward from the upper edge of the substrate 3a, slightly rearward (to the right in the figure). The center of the substrate 3a is pivotally supported by a shaft 4 that protrudes laterally from the center of the drive roll 2, and the substrate 3a is supported by a removable pin 5 provided at an appropriate position on the side of the drive roll 2. , is positioned.

Reference numeral 6 designates a vertical support plate, in which an L-shaped groove 6a opening at the rear and a vertically elongated hole 6b located below the latter are bored, and these grooves 6a and the vertically long hole 6b are directed laterally from the substrate 3a, respectively. By removably engaging the protruding upper and lower pins 7 and 8,
It is attached to the board 3a. That is, if the support plate 6 is pulled up a little and then rotated backwards (counterclockwise in FIG. 1) about the lower pin 8,
The upper pin 7 comes out through the opening of the groove 6a, and the support plate 6
can be removed from the substrate 3a.

A groove 9 located slightly forward of the center of the shaft 4 and having a predetermined width Q is formed between the rear surface 6c of the support plate 6 and the stopper piece 3b.

Reference numeral 10 denotes a pair of left and right lifting means, that is, air cylinders, the pistons 10a of which can move up and down within the grooves 9, and the cylinders 1
0b is placed on the fixed mounting plate 11.

The solenoid valve 12 of the air cylinder 10 is connected to an air compressor 14 via a pipe 13, as shown in FIG.

As shown in FIG. 2, shafts 17 at both ends of a cylindrical take-up roll 16 with adhesive tape 15 pasted on its circumferential surface are placed on the left and right pistons 10a, respectively. The diameter of this shaft 17 is slightly smaller than the width Q of the groove 9.

When the piston 10a is in the raised position, the periphery of the take-up roll 16 is separated from the periphery of the drive roll 2, and when the piston 10a is in the lowered position, the periphery of the take-up roll 16 is separated from the periphery of the drive roll 2. We're starting to come into contact.

A cutter 18 is provided so as to be able to reciprocate along the axial direction of the drive roll 2, and is capable of cutting the film A in the width direction with its blade 18a.

19 is a detection means that detects the operating state of the cutter 18 from the start to the end of cutting the film A, and sends a signal to a timer (not shown) of the control means 20, so that the film A can be wound most reliably. When the position is reached, the air cylinder 10 is actuated via the solenoid valve 13.

Reference numeral 21 designates a pair of left and right rails located in front of the shaft 17 of the winding roll 16 and rotatably supports it, 22 a guide plate, and 23 an air nozzle.

Next, the operation will be explained.

The piston 10a is raised and the take-up roll 16
is slightly separated from the drive roll 2.

By the air discharged from the air nozzle 23,
The front end of the film A is fed forward and adheres to the adhesive tape 15 on the take-up roll 16.

Then, after lowering the piston 10a and bringing it into contact with the drive roll 2, the drive roll 2 is rotated,
Film A is wound onto a take-up roll 16.

Then, when the pin 5 is removed, the swing arm 3 is rotated forward (counterclockwise in FIG. 1) by the weight of the take-up roll 16, and the shaft 17
move on top.

Next, while lifting the support plate 6, rotate it counterclockwise in FIG. 1 to disengage the pin 7 from the groove 6a and disengage the pin 8 from the vertical hole 6b. The plate 6 is separated from the substrate 3a.

Next, when the swing arm 3 is rotated rearward and returned to its original position, the take-up roll 16 on which the film A has been wound remains on the rail 21.

After returning the swing arm 3 to its original position and fixing it with the pin 5, engage the vertical hole 6b of the support plate 6 with the pin 8 and the groove 6a with the pin 7, and push the support plate 6 slightly downward. By this means, the support plate 6 is attached to the substrate 3a.

The piston 10a is raised, and the shaft 17 of the take-up roll 16 with a new adhesive tape 15 attached thereto is inserted from above into the groove 9 formed by the rear surface 6c of the support plate 6 and the stopper piece 3b. Place it on standby.

In this state, a slight gap is formed between the lower surface of the take-up roll 16 and the periphery of the drive roll 2,
There is no problem in the next winding operation by the winding roll 16.

After the first winding roll 16 winds up the film A of the required length, a switch (not shown) is operated to move the cutter 18 in the width direction of the film A as shown by arrow B in FIG. Let it run and cut it.

The end of cutting is detected by the detection means 19, and the control means 20 controls the air cylinder 10 by the solenoid valve 12 in synchronization with the cutting of the film A.
, and as shown by arrow C, the piston 10
Lower a.

Thereby, the next take-up roll 16 comes into contact with the drive roll 2.

The next take-up roll 16 takes the cut film A
While the cut end of the tape 15 is being wound around the adhesive tape 15, the first take-up roll 16 is carried out from the rail 21, and then the next take-up roll 16 is rolled onto the rail 21 in the same manner as described above. Place it so that it can roll freely.

〔Effect of the invention〕

In the winding machine equipped with the cutting section splicing device according to the present invention, the cut end of the film is fed between a drive roll and a take-up roll that is slightly separated from the drive roll, so that the film is ,
The edges are fed without waving or wrinkling.

The timing at which the take-up roll contacts the drive roll and the film is wound up is related to the lifting means linked to the cutting mechanism, so that the film is wound up smoothly and reliably.

By increasing the speed of the cutter, the film is cut in a direction almost perpendicular to the forward direction, which eliminates unusable triangular winding sections at the beginning and end of the winding roll, eliminating wasted film. Available.

Even if the adhesive strength of the adhesive tape attached to the take-up roll is weakened, there is no problem with winding, and therefore the film does not tear or stretch when unwinding from the take-up roll, making the work easier. Also, there is no need to waste film.

[Brief explanation of drawings]

FIG. 1 is a side view showing one embodiment of the present invention, FIG. 2 is a perspective view of the winder shown in FIG. 1 with the swinging arm omitted, and FIG. 3 is an air cylinder shown in FIG. FIG. 4 is a side view showing a conventional winding machine. DESCRIPTION OF SYMBOLS 1... Frame, 2... Drive roll, 3... Swinging arm, 3a... Board, 3b... Stopper piece, 4...
... shaft, 5 ... pin, 6 ... support plate, 6a ... groove,
6b... Vertical hole, 7, 8... Pin, 9... Groove, 1
0...Air cylinder, 10a...Piston, 1
DESCRIPTION OF SYMBOLS 1... Fixed mounting plate, 12... Solenoid valve, 14... Air compressor (driving means), 15... Adhesive tape (adhesive surface), 16... Winding roll, 17... Shaft, 18
... cutter, 19 ... detection means, 20 ... control means, 21 ... rail, 22 ... guide plate, 23
...Air nozzle, A...Film.

Claims (1)

[Scope of Claims] 1. A drive roll, a take-up roll that is rotated in contact with the upper surface of the drive roll and winds the film on its peripheral surface, and a take-up roll that intersects with the film feeding direction in the vicinity of the drive roll. In this air-feeding film winder, the film is , a take-up roll having an adhesive surface to which it can be attached; an air cylinder capable of raising the take-up roll relative to a drive roll; and a reciprocating movement in the lateral direction in front of the take-up roll to cut the film. a cutter; a detection means for detecting the operation of the cutter; and when the detection means detects that the film has been cut by the cutter, the take-up roll is lowered by the air cylinder and brought into contact with the drive roll. An air-feeding film winding machine characterized by comprising a control means.