JPH03186557A - Synchronization of feeding-out speed of a plurality of original film material in film attaching device - Google Patents

Abstract

PURPOSE:To transport an original film into a high frequency machine in accordance with the taking-up operation of the machine by electrically synchronizing or nearly synchronizing the rewinding speed of a film rewinding driving device with the film transporting speed of the high frequency machine. CONSTITUTION:An original sheet 21 of a film rewinding device A is placed on the upper parts of feeding-out rollers 27 and 28 in pairs which are set parallel and revolved through a motor 30 and a shaft 29, and a film 11 is rewound in the direction of arrow 19 by the revolution of the rollers 27 and 28 in the direction of arrows 36. Revolution speed of the respective rollers 27 and 28 is electrically controlled so as to be nearly equal to the feeding-out speed of a welding machine 1. Accordingly, each film rewinding device A - D adjusts the film in the quantity demanded by the welding machine 1 by a proper method, and the automatically supply the film into the welding machine 1.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is a method for manufacturing a large vinyl film, for example, a vinyl film to be spread or stretched over the surface of a greenhouse for greenhouse horticulture, from a small mountain of raw film. When welding and joining the sides to each other and processing it into a wide film, the feed speed at which the raw film is fed into the film welding device is synchronized or approximately synchronized with the adhesive feed speed of the high-frequency sewing machine. Let me.

Concerning how to make work easier.

(Prior art) Conventionally, when the original film is small, for example, 100 m
If it is a roll of raw film, the roll of the raw film is rewound through the take-up and feeding roller of the film welding device and sent to the film welding device.
For example, for a roll of 500 to 700 m, the original film is placed on top of an electric rotating roller that rotates at a circumferential speed that is approximately the same as the rewinding method described above and the feed speed of the film take-up and feed device of the film welding device. There was a method of rotating and rewinding the raw film so that the outer circumferential speed of the original film was approximately the same.

(Problems to be Solved by the Invention) In the method for rewinding the original film described above, there is no problem if the mechanical devices, the state of the film original, the welding state of the sewing machine, etc. are all the same. The polishing part of the mechanical equipment, the condition of the original film, for example, the difference in weight due to the amount of remaining film, the distance of the film separation due to the strength of the winding of the film, the curvature of the film itself, the length of the original film There was a problem in that multiple film rolls could not be rewound to the same state due to differences in resistance, etc., and this caused wrinkles in the film welding, causing a major problem that made the film unusable.

The present invention aims to solve this problem by providing a method for feeding a raw film into a high-frequency sewing machine in a single core to be taken into the sewing machine.

(Means for solving the problem) A high-frequency sewing machine that generates an electric signal proportional to the amount of feed through a film feed shaft or roller, and feeds the original film based on this signal. It is.

(Example) An example of the present invention will be described below with reference to the drawings.

Figure 1 shows how four films (sheets) are attached to a combined high-frequency film welding device (4) that is equipped with three high-frequency welding sewing machines in series.
FIG. 3 is a perspective view of the table feeding the film through a suitable film interleaving device;

The high-frequency sewing machine (1) uses the fill l returned from the original fabric (21).
, an overlapping part (
16) is welded and the film (11) and film (12) are processed into a two-sheet shape to form a two-ply film. In addition, the second high-frequency sewing machine continuously returns the original fabric (22) to the film (12).
) and the film edge (9) of the film (13) after returning the original fabric (23).
17) is welded and processed into a continuous three-layer film. or,
Similarly, the original fabric (24) is continuously passed through the third high-frequency sewing machine.
The film overlap portion (1G) of the film edge (15) of the returned film (14) and the film edge (10) of the film (I3) can be welded to form a four-piece continuous film.

Two pieces are sewn together via one or more high-frequency sewing machines,
It goes without saying that it is also possible to process a three-layer film or a film with more than three films.

Each original film is rewound through a suitable rewinding device. For example, each film rewinding device is constructed as follows.

Film rewind device! The original fabric (21) in (A) is made up of two parallel delivery rollers (27) and a delivery roller (28) that rotate via a motor (30) and a shaft (29).
The film (11) is placed on the upper part of the film, and the film (11) is rewound in the direction of the arrow (19) by the arrow rotation of the roller. The rotation speed of each roller is electrically controlled to be approximately the same as the feed speed of the welding sewing machine.

The original film (22) of the film rewinding device (B) is rotatable via a shaft rod of an appropriate structure in a hollow portion formed in the core and a bearing (41) that retains the shaft rod. The original film (22) is rewinded and rotated through the rotation of the electric pressure roller (31).
) to the arrow (25). The pressure roller (31) is equipped with a suitable deceleration motor at one end of this shaft, and has a structure that allows it to rotate at a desired roller circumferential speed.
31) The shaft is a film rewind device! The support (40) arranged at an appropriate position in (B) and the two support rods (33) pivotally supported by this support (40) are rotatable in the direction of the arrow (40), and a suitable air cylinder When desired, the roller surface is pressed onto the circumferential surface of the web (22) via the arrow (34), and the rotational force of the roller is transmitted to the web (22) to move the film (12) along the arrow (20). It is configured to be sent.

The film rewinding device (C) is rotatable together with the shaft (38) to which the film (23) is fixed, passing through the center of the film (23) via bearings (42) installed at substantially both ends of the film rewinding device (C). However, a deceleration variable speed motor is installed at the end of the shaft (38), and this motor is set so that the feed speed of the welding sewing machine is approximately the same as the unwinding speed of the original fabric (23). Rotation is electrically controlled.

The central part of the film (24) is penetrated through the shaft bearings installed at substantially both ends of the film rewinding device (D).
4) is rotatable together with a shaft (38) to which the welding film is substantially fixed, and the original film (24) is automatically rewound by the required amount by feeding the welding film, that is, by taking the film away.

The film rewinding devices of the above four examples are installed in each.

Alternatively, the loaded raw film can be automatically supplied to the welding sewing machine by adjusting the amount of film required by the welding sewing machine using an appropriate method.

However, as a matter of fact, if the amount of film to be bonded and sent out by a high-frequency sewing machine is prepared in an ultra-trace amount, the bonding work can be carried out smoothly in practice. In reality, this requires changing the rotational speed of each drive motor in response to various current fluctuations. This slight delay acts as a slight brake, which is supplemented by electrical slip in the motor. (
Patent claim 5) At the beginning of the film unrolling and adhesion work, the original film is pulled out from the core, and when the film is unrolled to a predetermined size and the film remains on the core at the end, this remaining film is removed from the core. There is work to wind up. At this time, if a clutch, such as an electromagnetic clutch, is installed between the drive motor and the roller, so that the roller can freely rotate during the rest period, the work will not be unreasonable. (Claim 9) Since this work is performed electrically, the work can be done easily and smoothly by operating the drive motor via a manual switch or the like.

(Patent Claim 5) Fig. 2 is a cross-sectional view of a part of the oscillating pressure roller of a high-frequency sewing machine, the width of which is about 1 to 3 marks, and varies depending on the model, but usually the lower part is the oscillating heating roller. (46), and the shaft (47) passing through this shaft passes through the same roller of each high-frequency sewing machine, so that the rotation of the rollers is the same. The upper part is an earth roller (2), which is rotatably supported via a suitable support and a shaft.

The rotation of the heating roller (46) is controlled by the frame (4) of the high frequency sewing machine.
5) via the variable speed rotary drive device built into the
At both ends of the upper part of the frame, there is a film feed roller (5) that rotates with the entire length of the frame, and although the circumferential speeds of these rollers are said to be the same, the circumferential speed of the final feed roller is increased by an extremely small amount. This makes the film advance smoothly.

At the end of these series of roller shafts (47) or at a desired position as shown in FIG.
), etc., to an electrical signal transmitting device, such as an encoder (5
0) to convert the number of revolutions into a number of immediately proportional pulses, or as shown in Figure 4, the outer circumference of the feed roller (5),
As shown in FIG. 5, a magnetic body (53) of an appropriate size or an appropriate sensitive body is placed at a predetermined interval around the outer periphery of a pulley (51) fixed to a roller shaft (47). The peripheral speed of rotation of the Boleyn or roller is detected by the sensor (52) to detect the position of the magnetic material, and this is converted into a signal, and the original fabric dissolving motor (
30) and (31).

(Effect of the invention) In this way, the torque of the reaction motor for unraveling the original film necessary for unraveling the original film is transmitted to the original film placed on the roller via an appropriate roller, or Either the film is crimped onto the original fabric and transferred, or in any case, continuous film welding work can be carried out smoothly by supplying approximately the same amount of film as the amount of film being welded by the high-frequency sewing machine. .

[Brief explanation of drawings]

FIG. 1 is an explanatory perspective view of a combined raw film rewinding device according to the present invention. Figure 2 is a cross-sectional view of a welding roller of a high-frequency sewing machine. Third. 4th. FIG. 59 is a perspective view of the structure of the transmitting device.

Claims (1)

[Claims] 1. Sending out a plurality of raw films that have been rewound, unwound, and fed into each high-frequency sewing machine as a film to be processed into a high-frequency sewing machine for welding raw rolled films, or a combination of these high-frequency sewing machines. The rotational speed of the appropriate electric device is the rotational speed of the main film feeding shaft of the high-frequency sewing machine, or the unwinding speed of the original film unwinding and feeding drive device is electrically controlled via a signal obtained by converting this circumferential speed into an appropriate electrical signal. A method for synchronizing the feed-out speed of a plurality of film originals in a film bonding device, characterized by synchronizing or substantially synchronizing the film-feeding speed of a high-frequency sewing machine. 2. The rotational speed of an appropriate electric device that feeds multiple raw films that have been rewound, unwound, and fed into each high-frequency sewing machine as processed films to a high-frequency sewing machine for welding raw rolled films, or a combination of these high-frequency sewing machines. The film feed-out speed of the high-frequency sewing machine is electrically adjusted to the unwinding speed of the original film unwinding and unwinding drive device via the rotational speed of the main film feed roller of the high-frequency sewing machine, or a signal obtained by converting this circumferential speed into an appropriate electrical signal. A method for synchronizing the feeding speeds of a plurality of film rolls in a film bonding device, characterized in that the speeds are synchronized or substantially synchronized. 3. A raw film unraveling device characterized in that the time to start unwinding and feeding out the raw film is set to a suitably early stage compared to the time at which the adhesive film feeding drive motor of a high-frequency sewing machine is started. 4. An original film feeding device characterized in that a clutch is provided between the original film feeding drive motor and the original film rotation roller. 5. When unraveling the film using the original film unraveling device,
A device for unraveling a raw film, characterized in that a fixed or variable brake is applied to the raw film. 6. An original film unraveling device in which the original film unwinding drive motor can be rotated in forward and reverse directions using a separate circuit in addition to the automatic electric circuit.