JPH03267246A - Continuous unwinding device for film material - Google Patents

Abstract

PURPOSE:To connect films without stopping a line by accelerating a new-film holding mechanism so as to be synchronized with the speed of an old film with an accelerating and synchronizing mechanism, and thereafter, connecting both the films with a connecting mechanism. CONSTITUTION:A connecting mechanism 18 consists of a holding mechanism 24, an accelerating and synchronizing mechanism 25 and a connecting mechanism 26. An adsorbing vacuum pad as the holding mechanism 24 is previously adsorbed to a new film 16. The holding mechanism 24 is turnably fitted to a shaft 30 of a link 29, which is turnably fitted on a shaft 30 with a fixing 28, and shafts 27, 30, 30, 27 forms a paralell-ogram. In the accelerating and synchronizing mechanism 25, links 29 are positioned in the waiting positions, and the links 29 are accelerated so as to be synchronized with a driving roller 7 of an old film 5, and they are positioned in the vertical positions. Simultaneously, an electromagnet 37 and a permanent magnet 38 of the connecting mechanism 26 are continued electrically, and an adhesive tape 39 previously attached to the tip end of the new film 16 is pressed against the old film 5 with the reaction force to be connected, and simultaneously, the old film 5 is cut by a cutter 41. Consequently, the continuous operation can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a continuous unwinding device for continuously supplying a film-like material in a film-like material unwinding device.

[Conventional technology]

In order to connect the new film material and the remaining film material at a steady speed, the conventional device requires an accumulator to store the length of the film to be fed out for the time required for the connection. However, since the film-like material is alternately folded multiple times by multi-stage rollers in the accumulator, it is easily damaged, and problems such as horizontal burrs and wrinkles occur on the roller surface, which reduces the equipment space and control equipment. There were many difficulties in terms of cost.

Note that related devices of this type include, for example, Japanese Patent Application Laid-open No. 106256/1983.

[Problem to be solved by the invention]

In the above-mentioned conventional technology, no consideration was given to synchronizing the speed to a steady state for connection, and the equipment was insufficiently compact. In addition, if the manual connection time exceeds the allowable time of the equipment, the equipment must be stopped, which tends to result in defects in the processed products.

The present invention does not require complicated accumulators and related equipment, and enables automatic connection and continuous steady feeding of film-like materials, thereby eliminating the need for highly skilled equipment operators and improving the working environment. An object of the present invention is to provide a continuous unwinding device for a film-like material suitable for realizing improvements.

[Means to solve the problem]

The present invention includes the following technical means to achieve the above object. That is, a mechanism for holding a new film-like material to be added to the film-like material being fed out at a constant speed, a mechanism for accelerating and synchronizing the holding mechanism to the speed of the film-like material being fed out at the constant speed, and The apparatus is equipped with a mechanism for connecting the synchronized leading edge of the new film-like material to the film-like material being fed out at a constant speed.

[Effect]

The individual technical means employed in the present invention to achieve the above object function as follows.

The mechanism for holding the new film-like object can reliably hold the leading end of the new film-like object to be connected in a posture parallel to the remaining film-like object and without any deviation in the center, and also has the ability to maintain acceleration and synchronization. The holding state will not collapse or come off during the operation.

Furthermore, the mechanism for accelerating and synchronizing the leading end of the new film-like material to be added together with the holding section is a mechanism that smoothly accelerates the holding section, and the initial acceleration direction is not the feeding direction of the holding film-like material but the thickness. Since it is in the horizontal direction, it does not cause a collapse of posture. Furthermore, the connection mechanism for the film-like material is configured within the acceleration/synchronization mechanism, and when synchronized,
Since this is a mechanism in which the connection tape part, which is separately pasted to the end connection part of the new film-like material, is manually pressed against the target connection part, connection can be made without any problems due to speed deviation.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. 1 and subsequent figures.

FIG. 1 shows an embodiment of a continuous unwinding device according to the present invention.

The continuous unwinding device 1 is one of the mechanical elements of the film processing device 2, and is a device for sending out the film 5 to the processing tank 3 and the introduction section 4.

The film 5 unwound from the roll 6 is guided by a guide roller 7
and the drive roller 8, the paper is sent out at a constant speed in the direction of the arrow in the figure. Guide roller 7 and drive roller 8 are rotatably fixed on an extension (not shown) of base 9 of processing device 2 via pivots 10 and 11, respectively. The drive roller 8 is driven and controlled at a constant speed by a drive device (not shown).

The roll 6 is rotatably and replaceably attached to the arm 13 via a pivot 12, and a tension control mechanism (not shown) is also installed so that the film 5 is fed out at a constant tension.

A new roll 15 is rotatably and replaceably attached to the arm 13 at a position opposite to the roll 6 via a pivot shaft 14 so that a new film 16 can be delivered to the film connecting mechanism 18 via a guide roller 17. It has become. The guide roller 17 is rotatably connected to the arm 14 via a pivot shaft 19 . Arm 13 and arm 14 are fixed to each other and rotatably fixed to a support base 21 fixed to base 9 via pivot 20. Arm 1
3 and 14 have their rotational positions appropriately controlled with respect to the pivot shaft 20 by a drive device (not shown).

When the amount of film 5 sent out from the roll 6 is running low, a new film 16 is connected by a connecting mechanism 18.

Note that the guide roller 23 rotatably attached to the arm 14 via the pivot shaft 22 is a roller used for guiding the film 5 when connecting the film 5 to a pre-process film (not shown). be.

FIG. 2 is a detailed explanatory diagram of the connection mechanism.

The connection mechanism 18 includes a holding mechanism 24, an acceleration/synchronization mechanism 25, and a connection device #126.

The holding mechanism 24 is rotatably mounted on a pivot shaft 30 of a link 29 which is rotatably mounted on a pivot shaft 27 on an extension of the base 9 with a fixture 28 . Axis 27, 30
, 30, and 27 form a parallelogram. Holding mechanism 24
The holding portion 31 of the new film 16 is a reliable holding mechanism (for example, a suction vacuum pad, or an electromagnet in the case of a magnetic film).

The acceleration/synchronization mechanism 25 is connected to the pivot shafts 27, 30, 30° 27
The thread is at the center, and at the start of the operation, it is waiting in the state indicated by the broken line (subscript a) in FIG. The adjustment slot 32 is the link 2
This is for adjusting the swing radius of No.9.

The connection mechanism 26 includes a pressing arm 34 rotatably connected to a pivot shaft 33 on the holding mechanism, and a pressing arm 34 that is rotatably connected to a pivot shaft 33 on the holding mechanism.
4. The press located at the tip is the pad 35 and the holding mechanism 2.
4 and a support arm 36 on the extension of support arm 3;
6 and a permanent magnet 38 on the arm 34.

When the speed of the new film 16 is synchronized with the speed of the film 5, as shown by the solid line in FIG. Press the adhesive tape 39 pasted to the end connection part of 16 downward to line the dotted line 39b.
state, and the connection of the new film 16b to the film 5 is completed. When the connection is completed, the operation of the holding mechanism 24 is also released.

Prior to operation of the connection mechanism 18, the cutter base 40 is normally
It is waiting at the position indicated by the broken line 40a, and immediately before the connection mechanism 18 is operated, it moves to the position of the cutter stand 40 and is fixed therein.

The cutter 41 moves to the position indicated by the broken line 41b almost simultaneously with the pressing operation of the pad 35, and cuts the remaining portion of the film 5.

That is, by fixing the new film 16a to the holding mechanism 24a with an adhesive tape (not shown) attached to the leading end thereof, the new film 16a can be accelerated, synchronized, connected, and the film 5 can be cut automatically.

FIG. 3 is a diagram illustrating the drive mechanism of the acceleration/synchronization mechanism.

The link 29 is rotatably supported by the frame 42 via the pivot 27. The support rotating shaft 43 is freely connected to a large gear 45 via a forward/reverse clutch 44. The large gear 45 is connected to a small gear 47 via a transmission means, such as a chino 46. The small gear 47 is fixed to the pivot shaft 10 together with the drive roller 7.

The link 29 is normally on standby at a position indicated by a broken line 29c, and is held in a state indicated by a broken line 4.9a by a stopper 49 rotatably attached to the frame 42 via a pivot 48. When starting the acceleration/synchronization operation, at the same time as the broken line 49a is released, the forward and reverse rotation clutch 44 is operated to the forward rotation side, so that the same speed as the drive roller 7 is energized by the broken line 29a, and the link 29 is Obtained by location. The position of this link 29 becomes the film connection work point. This connection point is detected by the phase sensor 50, and the forward/reverse clutch 44 is disengaged at the same time as the start of the connection operation. The link, which has come to the position indicated by the broken line 29b due to inertia, is attached to the frame 42 by the pivot 51.
The stopper 52 is rotatably supported via the stopper 52, and is held in the state indicated by the broken line 52b. The impact at the end of the swing range of the link 29 is absorbed by the dampers 53 and 54.

The link 29 fixed at the position indicated by the dashed line 29b is released from the broken line 52b by a return command signal (not shown).
By operating the forward/reverse clutch in the reverse direction, the link 29 is returned to the return position [129c].

Changes in the speed setting of the drive roller rough can be handled by changing the ratio of the number of teeth between the large gear 45 and the small gear 47.

If the speed is to be changed steplessly, a continuously variable transmission can be used.

FIG. 4 and FIG. 5 are explanatory diagrams showing a method of exchanging the rolls after the connection work is completed.

Figure 4 shows the state immediately after the connection is completed, and the new role 1
5 has moved to the position indicated by the solid line 15b.

Furthermore, move the new roll 1 toward the position indicated by the - dotted chain line 15c.
5b continues moving.

FIG. 5 shows the roll position when a steady state is reached.

The solid line 15c is the steady position, and the next roll 56 is being supplied.

As explained above, this embodiment has the following effects.

Unlike conventional devices, there is no need for an accumulator that stores the unrolled length for the time required to connect the film in order to avoid stopping the line. Furthermore, since connection work can be performed without stopping the line, the amount of wasted film is extremely small. Furthermore, in the conventional accumulator system, there is a time limit for connection work, which causes great mental stress, but this embodiment eliminates these concerns. Furthermore, in terms of space, the device of the present invention can save space compared to the conventional method using an accumulator.

This effect increases as the film size and feed speed increase.

〔Effect of the invention〕

Since the present invention is configured as explained above,
Since the line does not have to be stopped, there is no need for an accumulator to store the length of film to be fed out for the time it takes to connect the film.Also, since the line can be connected without stopping, the amount of wasted film is extremely small. .

[Brief explanation of drawings]

FIG. 1 is a side view showing the configuration of one embodiment of the present invention, and FIG.
The figure is a side view showing the connection mechanism of one embodiment, FIG. 3 is a perspective view showing the drive section of the acceleration/synchronization mechanism, FIG. 4 is a side view showing the movement of the roll, and FIG. FIG. ■... Unwinding device, 18... Connection mechanism, 24... Holding mechanism,! No 1 Core B - 11 inches ↓ ↓ 吋f Katsuai residual fusamu 2 Figure 6 Tsujitsutsu υ five-leg field

Claims (1)

[Claims] 1. In a continuous film unwinding device that continuously supplies and connects new film to a film material being fed out at a predetermined speed, On the other hand, a mechanism for holding a new film-like material to be spliced, a mechanism for accelerating and synchronizing the holding mechanism to the speed of the film-like material being sent out at the predetermined speed, and a mechanism for holding the new film-like material to be spliced, 1. A continuous unwinding device for a film-like material, characterized in that it is provided with a mechanism for connecting to the film-like material. 2. The continuous unwinding device for a film-like material according to claim 1, wherein a suction pad is used as a mechanism for holding the novel film-like material. 3. The continuous unwinding device for a film-like material according to claim 1, wherein an electromagnet is used as a mechanism for holding the novel film-like material. 4. In a continuous unwinding device for film-like material that continuously supplies and connects new film to a film-like material that is being fed out at a predetermined speed, a new film is added to the film-like material that is being fed out at a predetermined speed. a mechanism for holding a film-like object; a mechanism for accelerating and synchronizing the holding mechanism to the speed of the film-like object being sent out at the predetermined speed; and a mechanism for connecting the synchronized new film-like object to the film-like object. A mechanism for accelerating and synchronizing the film-like material up to a steady speed, a transmission mechanism for extracting rotation from a steady rotating shaft, a clutch for connecting and disconnecting transmission, and a new film-like material within the synchronizing mechanism. An arm to be transported, a swing angle detector for this arm, a brake that stops the swing position of the arm according to the detected angle detected by this angle detector, and a reverse transmission that returns the stopped arm to its original position. 1. A continuous unwinding device for a film-like material, characterized in that it is comprised of a mechanism.