JPH0724353Y2 - Film cutting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a film cutting apparatus applied to a winding machine of a film manufacturing apparatus.

(Prior Art) An automatic switching type film winding machine having two winding cores, when one of the cores is full and the film is rewound onto the other empty core, A cutting device is required. An example of a winder having this cutting device is shown in FIG. In FIG. 6, 11 is a film, 1
2 and 13 are cores, and the cores 12 and 13 are attached to both ends of a turret 16 which is rotatably mounted on a frame 19 in the direction of the arrow C.
It is rotatably supported in the direction of arrow A by a drive device (not shown). Arms 18 and 18 are projectingly provided on both sides of the center of the turret 16, and guide rolls 17 and 17 are pivotally supported at the respective tip ends of the arms 18 and 18. 14
Is a mill roll in which the film 11 is wound around the core 12.

Further, another frame 28 is installed on the film 11 supply side of the frame 19, a guide roll 27 is mounted on the film feeding passage of the frame 28, and the frame 28 is pivotally attached to the frame 28. At the tips of the rocking arms 26 and 23,
A press roll 25, an electrostatic charge applying means 20, and a cutter 22 are attached. The swing arms 26 and 23 swing around the same axis D adjacent to the guide roll 27. The electrostatic charge applying means 20 uses an electrode section of a known air-blowing type electrostatic charge applying apparatus, and the power supply section and wiring of the apparatus are not shown.

Next, the case of tapeless winding of the film 11 will be described. FIG. 6 shows a state at the time when the mill roll 14 on the core 12 on the right side of the drawing reaches the full state. When the winding length is measured by a winding length counter (not shown) and reaches the full amount, the swinging arms 23 and 26 are tilted to the position shown in FIG. 7, the film 11 is cut by the cutter 22, and at the same time the film is pressed by the pressing roll 25. Press 11 onto new core 13. Further, simultaneously with cutting, ionized air is blown from the air blowing type static charge imparting means 20 to the film cutting end a, and the film cutting end a is pressed against the core 13 by applying wind while adsorbing the film cutting end a to the core 13. Then, the tape is wound and automatically cut and rewound without tape.

When the winding is completed, the swing arm 23 is activated to return to the state shown in FIG. 8, and the film 11 is wound on the new core 13 as the mill roll 15.

(Problems to be Solved by the Invention) As shown in FIGS. 6 and 7, the conventional film cutting device has the following problems because it cuts the running film by the cutter. That is, immediately after the film is cut in the state shown in FIG. 7, there is a risk that the film end portion a will adhere to the tip of the cutter 22, and therefore, if the film is wound on the core 13 as it is, wrinkles occur. Due to the influence of the wrinkles, there is a problem that the film on the inner layer of the mill roll leads to a large amount of defective products. Further, the cutter 22 must be lowered at a high speed during cutting, and the heavy object must be suddenly stopped at the position shown in FIG. 7 after cutting. Therefore, the swing arm 23 and its operating mechanism must be firmly constructed.

The present invention has been proposed to solve the above problems.

(Means for Solving the Problems) Therefore, the present invention is directed to a pressing roll that comes into contact with the core by swinging to press the strip of film or the like, and a cut end of the strip of film or the like attached to a swingable arm. In a turret-type winding device for automatically cutting and winding a belt-like material such as a film having an electrostatic charge giving means for giving an electrostatic charge to the, and a film cutting device mounted on the swingable arm, the film cutting device comprises: A guide roll that has a spiral guide groove on its outer periphery and is rotatable at the cutting position, a slider that is integrated with a cutter that slides in the guide groove, and a guide roll that is provided at the tip of the swingable arm. A guide plate that is fixed facing each other and guides the slider in the axial direction of the roll, a roll that has a guide groove of the guide roll and a groove that can be connected at both ends of the guide plate on the outer circumference, and The roll is composed of a clutch mechanism that can be brought into and out of contact with the roll, which serves as means for solving the problem.

(Function) When the slider is guided by a guide roll provided with a spiral guide groove on the outer circumference and the film is cut in the width direction by the cutter attached to the slider, the groove is formed before cutting the film. The attached guide roll descends to the cutting position and stands by. Then, the cutter starts traveling in the width direction of the film from the outside of the film, and moves the entire width of the film while cutting the film. The cutter then cuts the full width film and moves to a position outside it and stops.

(Embodiment) The present invention will be described below with reference to the embodiments of the drawings. FIGS. 1 to 5 show an embodiment of the present invention. First,
In FIG. 1, 11 is a film, 12 and 13 are cores, and the cores 12 and 13 are attached to both ends of the turret 16 rotatably mounted on the frame 19 in the direction of arrow C, in the direction of arrow A. It is rotatably supported by a drive device (not shown). Arms 18 and 18 are provided on both sides of the center of the turret 16.
The guide rolls 17, 17 are axially supported at the respective tip portions of the arms 18, 18. 14 is a mill roll in which the film 11 is wound around the core 12. Further, another frame 28 is installed on the film 11 supply side of the frame 19, and a guide roll 27 is mounted on the film feeding passage of the frame 28, and is further pivotally attached to the frame 28. A pressing roll 25, an electrostatic charge imparting means 20, and a film cutting device 21 are attached to the tips of the swing arms 26 and 23. The swing arms 26 and 23 swing around the same axis D adjacent to the guide roll 27. The electrostatic charge imparting means 20 uses an electrode portion of a known air-blowing type electrostatic charge imparting device, and the power supply unit, wiring, etc. of the device are not shown. The above is the same except that the cutter 22 of FIG. 6 is replaced with the film cutting device 21.

Next, referring to FIGS. 3 to 5, the structure of the film cutting device 21 will be described. In FIG. 3, reference numeral 1 is a guide roll, and a spiral groove G is provided. As shown in FIG. 5, a roll 2 having a groove G ₁ which can be separated from the guide roll 1 by a clutch mechanism is provided at both ends thereof. 6 is an air cylinder, 7 is a link mechanism, and 8 is a sliding member. When the rolls 1 and 2 are connected to each other, holes 1a provided at both ends of the guide roll 1 as a clutch mechanism,
The projections 2a provided on the end surface of the roll 2 are fitted to each other so that the grooves G and G ₁ are G ₂
It is the case that they match. Sliding member 8 is bearing group 9a, 9b
The roll 2 is supported by a shaft group 10b through a bearing group 9b.
It is slidable in the axial direction and can rotate freely.
Further, as shown in FIG. 4, a slider 3 is movably arranged in a groove G provided in the guide roll 1, and the rotational movement of the guide roll 1 by a driving device such as a belt and a pulley (not shown). The slider 3 runs in the axial direction of the guide roll 1. Guide plate 5 is an arm
It is provided at the tip of 23. Further, a cutter 4 for cutting the film is attached to the slider 3. The guide roll 1 is formed in a length wider than the width of the film 11.

Next, the operation of the embodiment configured as described above will be described. First, the case of tapeless winding of the film 11 will be described. FIG. 1 shows a state when the mill roll 14 on the core 12 on the right side of the drawing reaches a full state. Then, when the winding length counter (not shown) measures the winding length and when it reaches the full amount, the swinging arms 23 and 26 are activated to the position shown in FIG. 2, and the film 11 is cut at the cutting position 21 by the following action. At the same time, the press roll 25 presses the film 11 against the new core 13. Further, immediately before the start of cutting, the ionized air is blown from the blower type static charge imparting means 20 to the film cutting end, and the film cutting end is pressed against the core 13 by the wind force while giving an electric charge to the film cutting end, and the film cutting end is adsorbed to the core 13. The tape is automatically cut and rewound without tape.

When the winding is completed, the arm 23 is activated to return to the same state as in FIG. 8, and the film 11 is wound on the new core 13 as a mill roll.

Next, the operation of the film cutting device 21 will be described. During the transition to the state shown in FIG. 2, that is, before the contact with the film 11, the peripheral speed of the guide roll 1 is driven to a rotational speed synchronized with the speed of the film 11. Has been done. Then, the state shown in FIG. 2 is obtained.

Next, the roll 2 is operated by the action of the air cylinder 6 and the link mechanism 7.
Moves toward the guide roll 1 and the protrusion 2a fits into the hole 1a, so that the guide roll 1 and the roll 2 are connected.
In this case, the preliminary slider 3 is in the groove G _{1 of the} roll 2,
Simultaneously with the above connection, the slider 3 starts traveling in the groove G of the guide roll 1 via the groove G ₂ . By this operation, the cutter 4 starts cutting from the end portion of the film 11 and finally completes the cutting by finishing traveling of the entire film width. Thus, the film is rewound to the empty core 13 from the start of cutting by the action of ionized air. The cut slider 3 is guided to the groove G _{1 of the} roll 2 at the other end of the guide roll 1, and immediately after that, the air cylinder 6,
The roll 2 is separated from the guide roll 1 by the link mechanism 7, and the slider 3 stops.

(Effect of the Invention) Since the present invention is configured as described in detail above,
It will be cut from the edge of the film near the empty core, and no wrinkles will occur. Further, since the cut surface of the film forms an oblique cut with respect to the running direction of the film and the winding around the empty core is sequentially started from the end portion, no wrinkles occur. Further, since the guide roll descends before cutting and is cut by the rotational movement of the guide roll, it is not necessary to rapidly operate or stop the heavy load.

[Brief description of drawings]

1 and 2 are side views of the film cutting apparatus according to an embodiment of the present invention in different operating states, FIG. 3 is a front view of a guide roll showing the embodiment of the present invention, and FIG. 4 is the same side. FIG. 5 is a sectional view, and FIG. 5 is a right end portion 1 of the guide roll in FIG.
Partial detailed views, FIG. 6, FIG. 7 and FIG. 8 are side views showing different operating states of the conventional film cutting apparatus. Description of main parts of the figure 1 …… Guide roll, 1a …… Hole 2 …… Roll, 2a …… Projection 3 …… Slider, 4 …… Cutter 5 …… Guide plate, 6 …… Air cylinder 7 …… Link mechanism, 8 …… Sliding member 9a, 9b …… Bearing group, 10 …… Shaft end 11 …… Film, 12,13 …… Core 14 …… Mill roll, 20 …… Static charge applying means 21 …… Film cutting Device, 23 …… Arm 25 …… Presser roll

Claims (1)

[Scope of utility model registration request] 1. A pressing roll for contacting a core by swinging to press a strip of film or the like, and an electrostatic charge imparting means mounted on a swingable arm for giving an electrostatic charge to a cut end of the strip of film or the like. In a turret type winding device for automatically cutting and winding a belt-like material such as a film having a film cutting device mounted on the swingable arm, the film cutting device is provided with a spiral guide groove on the outer circumference. A guide roll that can rotate at the cutting position, a slider that is integral with the cutter that slides in the guide groove, and a slider that is fixed to the tip of the swingable arm so as to face the guide roll. A guide plate that guides the roll in the axial direction, a roll that has guide grooves of the guide roll and grooves that can be connected to both ends of the guide roll on the outer circumference, and a clutch machine that allows the roll to come into contact with and separate from the guide roll. Film cutting apparatus characterized by comprising a.