JPH0212807B2 - - Google Patents

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a molding and filling machine that molds recesses in a resin film, fills tablets, etc. into the recesses, and seals them. The present invention relates to an automatic connection method and an automatic connection device.

[Problems to be solved by conventional technology and invention]

In conventional film connections of this type, the terminal end of the film consumed by the forming and filling machine is overlapped with the leading end of the film to be replenished next, and the connection is made with adhesive. Then the thickness will be doubled. When the thus connected film is passed between the upper die U and lower die L of the pressure forming machine as shown in Fig. 1A to form a recess in the film, the consumed film f ₁ and the next replenished film f ₂
Due to the thickness T of the connecting part, the upper mold U and lower mold L cannot be completely closed, causing molding defects in a wide range of front and back including the wide overlapping joint part of width D, and the film is damaged. There is a problem that it cannot be used effectively and becomes uneconomical.

In other words, when forming the film in units of 3 x 3 sheets as shown in Figure 1B, 9 concave sheets are formed in 1 rod, but in the conventional overlapping connection, the connection part is formed in the mold. The part located within is 1
All of the lots were defective, and all nine sheets had to be discarded.

The technical problem of the present invention is to eliminate such molding defects at the film connection part, to make effective use of the film, and to realize a method and apparatus that can continuously and automatically perform film connection. be.

[Means to solve the problem]

In order to solve this technical problem, the present invention
In the method of connecting a long film with its trailing end and leading end butting each other, the terminal of the consumed preceding film is detected,
The process of bending and deflecting the leading edge of the succeeding film to be replenished in the same direction and cutting off the excess length with the trailing edge of the leading film and the leading edge of the succeeding film overlapping; By overlapping and gluing another thin connecting piece over the end, a film connecting part is obtained in which the cut surfaces are butted against each other.

In addition, in order to carry out this method, a pair of film guide rollers are arranged with an interval in the substantially horizontal direction in the traveling direction of the film which runs in the substantially horizontal direction; A pair of film holders are provided below the film that can be opened and closed in the horizontal direction and form a V-shape when closed, and a film cutter is provided below the film holders. Further above, a film deflection mechanism is provided which pushes down the rear end of the leading film and the leading edge of the following film between the open film holders, and above the running film, the lower end thereof is pointed in a V-shape. A connecting thin piece connecting mechanism is arranged to be movable up and down, and when the connecting mechanism is lowered, the V-shaped lower end is placed on top of the film to be connected on the V-shaped concave surface of the film holder in the closed state. The device is configured such that the thin connecting piece is pressed by the connecting device.

[Effect]

According to the present invention, the terminal end of the consumed film and the leading end of the refilled film are butted end-to-end and connected with a thin connecting piece such as adhesive tape, so that the connected part does not become thick. This solves the problem of conventional overlapping connections where the upper and lower molds cannot be closed, resulting in defective molding of the film before and after the joint (all of one lot). You can use it without wasting it.

In particular, since the excess lengths of the two films are deflected together and cut, and the ends are abutted and automatically connected, the excess lengths can be cut and connected continuously.

Further, according to the apparatus of the present invention, the apparatus has a simple structure and can be provided at low cost, and the excess length of the film can be cut and connected continuously and automatically, and the operation is reliable and there are few failures.

〔Example〕

Next, embodiments of the present invention will be described in detail based on the drawings. FIG. 2 is a side view of the automatic connection device, and FIG. 3 is a side view showing the connection operation in order. In FIG. 2, rolls 1 and 2 on which films F ₁ and F ₂ are wound are rotatably supported on film holding shafts 1' and 2', respectively. The film F 1 and the film F 2 pulled out from the rolls ₁ and ₂ are transported by a guide member 3, guide rollers 4 and 5,
It then passes through delivery rollers 6 and 6' in the direction of the arrow, and is supplied to a forming and filling machine. The guide member 3 includes pressure members 7 and 8, and the lower film
When F ₁ is being supplied to the forming and filling machine, the lower pressure member 7 is away from the guide member 3, and the upper pressure member 8 presses and holds the film F ₂ against the guide member 3. .

Film deflection mechanisms 9 and 9' and a connection mechanism 10 are provided between the guide rollers 4 and 5, and the film deflection mechanisms 9 and 9' are provided between the guide rollers 4 and 5.
These film deflection mechanisms 9 and 9 sandwich F ₁ and F ₂ .
9' and a pair of film holders 11, 11' and cutters 12, 1 at positions corresponding to the connecting mechanism 10.
2' is provided.

The film deflection mechanisms 9 and 9' reciprocate with respect to the film holders 11 and 11' to deflect the end of the film and push the end of the film between the film holders 11 and 11'.

The connection mechanism 10 includes film holders 11 and 11'.
A pressing surface 10' is formed as a V-shaped protruding inclined surface, and a vacuum suction hole 1 is formed in this pressing surface 10'.
0'' is opened to attract and hold a thin connecting piece t such as adhesive tape.This connecting mechanism 10 is reciprocated by a known means such as a fluid pressure cylinder, so that the pressing surface 10' is pressed against the film holder. 11.1
It is oppressed by the slopes 13 and 13' of 1'.

The film holders 11 and 11' have slopes 1 corresponding to the slopes of the pressing surface 10' of the connecting mechanism 10.
3 and 13', respectively, and are reciprocated so as to move parallel to the films F ₁ and F ₂ and approach and separate from each other.

The cutters 12 and 12' work together to cut the end of the film, but one cutter 12 is fixed to the film holder 11, and the other cutter 12 is fixed to the film holder 11.
2' is driven independently from the film holder 11' to cut the end of the film.

In addition, small guide rollers 14, 14', 15, 15' are arranged between the rolls 1, 2 and the guide member 3, and limit switches _S1 , _S2 are used to control each film.
Detect the terminal parts of F ₁ and F ₂ .

The operation of the device of the present invention having the above configuration will be explained. _Figure 3 shows the connection operation in order.
It is then fed to the molding and filling machine. On the other hand, the leading end 2A of the film F2 of the roll ₂ has been pulled out to the position of the guide roller 5 beyond the film deflection mechanisms 9 and 9', and is held between the guide member 3 and the elastic member 8 and stopped. .

When the film _F1 is consumed and its end is detected by the limit switch _S1 , the end is fed out to the position of the guide roller 4, and then the feed roller 6 stops rotating. When the feeding of the film F ₁ stops, the film deflection mechanisms 9 and ₉ ' move down as shown in Fig.
The tip 2A of F ₂ is pushed and deflected in the direction of the film holders 11 and 11' between the guide rollers 4 and 5,
The terminal end 1A and the tip 2A are aligned in the same direction and parallel to each other. At this time, film holder 1
The cutters 1 and 11' and the cutters 12 and 12' are spaced apart, and the terminal end 1A and tip end 2A hang down from the gap therebetween.

Next, as shown in figure C, the film holders 11 and 11'
approaches and pinches the terminal end 1A of the film F ₁ and the leading end 2A of the film F ₂ , and then the cutter 12 ′ advances and cuts the end of the film below the holder into the cutters 12 , 12 ′. Cut with.

When the cutting is completed, the film holders 11 and 11' remain close together, and the connecting mechanism 1 is closed as shown in Figure 2.
0 descends toward the pedestals 11 and 11', and a thin connecting piece t such as adhesive tape held in advance on the pressing surface 10' is adhered to the films F ₁ and F ₂ , and the films F ₁ and F ₂ are bonded together. Connecting. At this time, the film
The terminal end 1A of film F ₁ and the leading end 2A of film F ₂ are aligned in the same direction, and the remaining ends are cut off. Film F ₂ is placed on the slope 13 of the film holder 11, and film F ₁ is placed on the slope 13'. While each is supported, the cut surfaces are brought together and connected.

When the connection is completed, the film deflection mechanisms 9 and 9', the connection mechanism 10, and the film holder 1 are connected as shown in Figure E.
Cutters 1 and 11' and cutters 12 and 12' return to their original positions. After that, as shown in the figure, the pressure member 8 on the side of the refill film F ₂ separates from the guide member 3, and the film
When the pressure on F ₂ is released to allow it to travel and the delivery roller 6 is driven, F ₂ begins to be supplied to the forming and filling machine.

While a new film _F2 is being supplied, the next roll is mounted on the film holding shaft 1', and
The leading end of the film is pulled out to the position of the guide roller 5, and is stopped by being pressed against the guide member 3 by the pressing member 7. Further, in preparation for the next connection, the thin connection piece t is held on the pressing surface 10' of the connection mechanism 10.

Incidentally, in the process shown in Fig. C, the thin connecting piece t may be adhered before cutting the extra length of the film with a cutter.

FIG. 4 is a partial side view showing another embodiment.
In the figure, the support shafts 16 and 1 of the guide rollers 4 and 5
Arms 17 and 17', which can be oscillated and rotated, are attached to 6', respectively. A film deflection plate 19 is attached to the arm 17 with a gap 18 between it and the guide roller 4 through which the film can run. Similarly, a gap 18' is provided in the arm 17', and the film deflecting plate 1 is connected to the arm 17'.
9' is attached.

These film deflection plates 19 and 19'
When rotating and tilting around 6 and 16' to the position shown by the two-dot chain line, the film deflection plates 19 and 1
Press down the film at 9' and the consumed film F ₁
The terminal end 1A of the film _F2 and the leading end 2A of the film F2 to be replenished are deflected toward the film holders 11 and 11'. In addition, the film has a gap 18, 1 between the guide rollers 4, 5 and the film deflection plates 19, 19'.
8', the film deflection plate 19,
19', and placed on the slopes 13, 13' of the film holders 11, 11'.

After cutting the extra length of the film and gluing the thin connection pieces, the film deflection plates 19 and 19'
returned to its original horizontal position.

〔Effect of the invention〕

As is clear from the above illustrated embodiments, according to the present invention, the end portion of the consumed film and the leading end portion of the refilled film are bent in the same direction so as to be aligned, and the film is cut while stacked in the same direction. At the same time, the films are connected by overlapping and bonding separately prepared thin pieces. Therefore, if a material that is sufficiently thin and easily heat-softened is used as the thin connection piece, the upper and lower molds will be in complete contact with each other during molding in the process shown in Figure 5A, unlike in the past, and molding defects will be avoided. Prevented. In addition, since the extra length of the film is cut off to make a butt connection, the only unusable part after molding is the position of the thin connection piece t with a narrow width d, so the connection is made as shown in Figure 5B. Thin piece t
Only one row (three sheets) of sheets at the position need to be discarded as defective. Therefore, 6 defective sheets are reduced compared to FIG. 1B, and the yield is improved. In addition, chips from the extra length are generated at the same position, making it easier to remove them.

In particular, since the excess lengths of the two films are deflected together and cut, and the ends are abutted and automatically connected, the excess lengths can be cut and connected continuously.

Further, an apparatus for carrying out this method includes a deflecting mechanism that bends and deflects the ends of both films in the same direction, and a pair of guide rollers provided at intervals in the film traveling direction. It is only necessary to have an opening/closing film holder, a cutter, and a connection mechanism for a thin connection piece, and the configuration is simple, operation is reliable, and the excess length of the film can be cut and connected continuously and automatically. can.

[Brief explanation of drawings]

FIG. 1A is a vertical cross-sectional view of a conventional forming process of a stacked connection part, and FIG. 1B is a plan view of the forming state of the stacked connection part. 2 to 5 show embodiments of the present invention, and FIG. 2 is a side view of the automatic connection device;
3 is a side view showing the connecting operation in order, FIG. 4 is a partial side view showing another embodiment, FIG. FIG. 2 is a plan view of the film connection portion in a molded state. In the figure, F ₁ and F ₂ are films, S ₁ and S ₂ are limit switches, 1A is the end of the film F ₁ ,
2A is the tip of the film _F2 , t is the thin piece for connection,
3 is a guide member, 4 and 5 are guide rollers, 7 and 8 are pressure members, 9 and 9' are film deflection mechanisms, 10 is a connection mechanism, and 11 and 11' are film holders.

Claims (1)

[Claims] 1. A method for connecting a long film with its trailing end and leading end butting each other, the method comprising: detecting the end of the consumed preceding film;
The process of bending and deflecting the leading edge of the succeeding film to be replenished in the same direction and cutting off the excess length with the trailing edge of the leading film and the leading edge of the succeeding film overlapping; 1. An automatic film connection method, comprising the step of overlapping and bonding another thin connection piece over the end portion, thereby obtaining a film connection portion in which the cut surfaces abut each other. 2. A pair of film guide rollers are arranged with an interval in the substantially horizontal direction in the traveling direction of the film traveling in the substantially horizontal direction; A pair of film holders that can be opened and closed and form a V-shape when closed are provided, and a film cutter is provided below the film holder.The rear end of the leading film is placed above the running film. and a film deflection mechanism that pushes down the leading edge of the following film between the open film holders, and a thin piece connecting mechanism with a V-shaped lower end above the traveling film for connection, which is arranged above and below the running film. When the connecting mechanism is lowered, the connecting thin piece is placed on the film to be connected on the V-shaped concave surface of the closed film holder by means of the V-shaped lower end. An automatic film connecting device characterized in that it is configured so that it can be pressed.