JPH03216458A - Protective film removing device - Google Patents

Abstract

PURPOSE: To exfoliate a protection film without generating a tear by placing an adhesive tape roll on the protection film in vertical attitude, accommodating the protection film in slit formed in two transport belts, and allowing a sensor device to actuate a drive device when protection film is sensed. CONSTITUTION: A plate 6 is transported through a slit between feed rollers 8 in a transport device 7 until a sensor E1 before an exfoliating device senses the leading ridge of the plate 6, and then adhesive tape rolls 1 and 2 are actuated, when these rolls 1 and 2 are at once placed on the front right ridge of the protection film on the plate 6, and the film is lifted. Meantime the plate 6 is passed through the slit and forwarded, and at the same time, the lifted ridge of the film is fed into the slit 3 between the transport belts 4 and 5 being driven parallel and vertically, and the belts 4 and 5 grasp the film instantly to exfoliate it from the plate 6.

Description

DETAILED DESCRIPTION OF THE INVENTION The invention relates to a device for peeling off a protective film from a plate to one or both sides.

This type of device is used on plates that are provided with a protective film to protect the copper cladding.

The objects covered with the protective film are individually supplied plates or coated flat strips or plates of different lengths.

PRIOR ART AND ITS PROBLEMS There is even a device known from EP 212 597 for peeling off the protective film from plates of the above type, in which case the device is already equipped with an adhesive tape lip. The tape roll is attached to the protective film of the plate, and furthermore, a tiltable transport path is formed for carrying out the protective film. Adhesive tape rolls based on EP212597 do not operate continuously. The adhesive tape is placed on the front edge, then the edge of the film is lifted onto the ring road and the protective film is pushed towards the front. Next, for the first time, a conveyor belt is inserted through the side gap along the guide surface, and the protective film is conveyed out.

However, the peeling of the protective film is carried out by a rotating adhesive tape roll that is lowered from above, which in a continuous operation process directly cuts the film edge.
The material must be placed into the nearly closed transport slit of the transport belt, and the transport device must be gradually tilted as in the state of the art while peeling off from the end.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an apparatus as described above for peeling off a protective film from one or both sides of a printed substrate without tearing, according to the method described.

In order to solve this problem, the present invention includes one adhesive tape roll, the adhesive tape grips one end of the protective film, and the protective film is carried out by a conveying device. In an apparatus for peeling a protective film from a plate, the adhesive tape roll is placed vertically onto the protective film in connection with the creasing based on the feeding movement, and the film is simultaneously In a continuous motion process, the two conveyor belts are accommodated in the slits and are capable of continuous rotation using the stripping device, forming a drive device for the plate consisting of an infeed roll. The present invention provides an apparatus characterized in that, when detecting the protective film, the sensor device operates the drive device for conveying the plate.

The essence of the invention is that a plate coated with a protective film is fed into the device, with first one end of the protective film being lifted off via a lowered adhesive tape roll. The lifted end is then continuously fed between the slits of two mutually opposed conveyor belts in order to completely peel off the protective film.
In this case, the protective film is completely peeled off from the plate by the lifting movement in conjunction with the continued transport of the plate.

In a preferred embodiment, the plate is guided by the device in a horizontal plane over an infeed roller, and the lifting and peeling movements of the protective film take place in a plane perpendicular to the plate.

In that case, a lifting movement in a vertical plane must not be interpreted narrowly; various other lifting angles are also conceivable. Here, the protective film does not necessarily have to be peeled off exactly on a vertical plane from a horizontally placed plate.

In other embodiments, the protective film stripping device advances transversely to the incoming plate toward the edge of the plate, where one end of the protective film is gripped by one or more rolls of adhesive tape. The edge of the plate and thus the edge of the protective film to be lifted is detected by an electric sensor device.

The conveyor belt that grips and lifts the film to be peeled is
It is preferable that the protective film has a surface that increases the frictional force against the protective film.

In one form, peeling devices are provided opposite to the upper and lower sides of the plate with respect to the protective films applied on both sides.

In another embodiment, a pair of conveyor belt type conveyor belts are positioned opposite to each other, and in addition, another pair of conveyor belts is arranged at a distance from each other. Particularly in the case of very large protective film areas, the lifting process or removal of the protective film is therefore carried out using several juxtaposed conveyor belts.

Instead of adhesive tape rolls, it is also possible to use suction rolls that operate under vacuum conditions or electrostatic suction rolls.

It is also possible to provide further guide belts alongside the conveyor belts which are arranged parallel to each other, but the guide belts are formed from rotating rubber belts, which extend upwardly and downwardly. It supports the entire surface of the protective film that is to be peeled off. This allows the protective film to be peeled off conveniently with virtually no wrinkles.

In a preferred embodiment, the sensor device has a light-blocking structure, and the right-hand edge of the plate and the edge in front of the plate at an angle to this are detected in relation to the protective film. be done.

In an advantageous embodiment, the stripping device is movable in a continuous working process and forms a plate drive consisting of an infeed roller which, when gripping the edge of the protective film, provides a signal for the stripping device via a sensor device. After the slide drive device is activated and the protective film is peeled off, the plate is delivered onto the delivery table via the delivery roller.

Embodiment Next, an embodiment of the present invention will be described in detail with reference to the drawings.

A plate (6) is shown, which is located in a vacuum chamber arranged in front and is connected to a subsequent transport device (
7) and into the peeling device through the feed roller (8).

What is important in the invention is that the edge of the film is gripped on one edge of the plate (6).

This is done in that the entire plate is slidable on a horizontal plane. In other words, the plate is
Reaching the roller gap of the feed roller (8), the entire stripping device advances transversely to the plate (6) towards the end of the plate (6) in order to strip the film, and an electric sensor device (E o); The edge of the plate is detected by (E1). It is therefore possible to bring the stripping device to position exactly opposite the edge of the film and thus also the edge of the plate. At this stage, the adhesive tape rolls (1), (2) are in contact with the upper and lower edges of the protective film, respectively (the detailed description below is for a plate covered with a protective film on both sides). be)
, lift this end.

By lifting the end, this end is connected to a conveyor belt (4) with high friction surfaces, two of which are located perpendicularly opposite each other and are driven in mutually opposite directions.
5) reaches the gap (3), therefore, the protective film is
It reaches the gap (3) of this conveyor belt, and
) and (5), it is peeled off from the plate (6) and transported upward.

Stripping of the lower film of the plate is also carried out in a similar or similar manner, in which case the same equipment is provided. Plate fed horizontally (
6) In order to peel off the upper and lower protective films, exactly the same peeling device is placed above and below. For the sake of simplicity, only the functions of the upper stripping device are described below.

In order to guide the protective film, in addition to a pair of conveyor belts (4) and (5) that grip the edges and carry it upward, there is also a pair of conveyor belts (4) and (5) that keep an interval between them. In particular, it is preferable that another pair of identical conveyor belts be arranged.

A pair of conveyor belts (4), (5) where only one end of the film is attached
When the film is gripped by It is gripped by the conveyor belt and moves upward in the same manner in synchronization with the first pair of conveyor belts (4), (5). This provides better uniform guidance of the film and prevents wrinkles from forming, so that the film is delivered upwards substantially intact.

This second pair of conveyor belts does not need to separate the conveyed objects. However, it is preferred that it ensures better guidance of the film.

As the material of the rotating conveyor belt, preference is here given to a reasonably rigid material with a fabric that ensures good adhesion to the film. Furthermore, it is possible to provide further adhesion-enhancing features, for example in adhesive layers, electrostatic adhesion or similar conveyor belts.

It has been mentioned above that the edge of each film to be peeled is gripped by two mutually opposed adhesive tape rolls (1), (2).

The upper adhesive tape roll (1) grips the upper edge of the protective film, while the lower adhesive tape roll (2)
Grasp the lower edge. Instead of the adhesive tape rolls (1), (2) described here which have an adhesive layer on one side, it is also possible to use vacuum suction rolls. Instead of a vacuum suction roll, it is also possible to use an electrostatic suction roll.

Two rollers arranged in a vertical plane, parallel to each other and spaced apart from each other, are connected to the transport slit (3).
The conveyor belt (4) shown here forming a
, (5), there is still another guide belt, which is formed from a simple rotating rubber belt in order to support the entire surface of the protective film that is peeled upward and downward. ing.

When the upper and lower protective films are peeled off, each film is located at the upper and lower ends of the peeling device, at which point the upper drive device (AO) of the upper peeling device stops, resulting in the upper film being stationary. Meanwhile, the lower film falls into the waste container provided below. Upper drive unit (AO
) stops, the upper film also automatically lowers into the waste container provided below.

It has been mentioned above that the edge of the plate to be fed must first be detected. Here, sensor units (EO), (E1), (E4) are provided, which units are formed from two sensor units arranged at an angle to each other. The use of light blocking devices is preferred here.

One sensor unit (E1) detects the right edge of the plate, while the other sensor device (E4) at an angle thereto detects the front edge of the plate.

It is important that a continuous cyclic process is possible. The plates (6) are first fed into the common device from a dedicated drive (A3) formed by the slits of rollers (8) located opposite each other. At this point, the slide drive device (A6) for the peeling device starts operating, so that the slide device moves on the plate in a direction transverse to the transport direction of the plate (6) and detects the right edge of the plate. Then, it is stopped via the sensor (E4).

During this time, the plate is connected to the sensor (E1) in front of the peeling device.
is conveyed between the roller slits until it detects the front edge of the plate. Next, adhesive tape roll (1), (
2) is activated, and the adhesive tape roll is immediately placed on the right edge in front of the protective film on the plate (6),
Lift up the protective film. During this time, the plate (6)
It is further conveyed through the roller slits, and at the same time the raised edge of the protective film is fed into the slit (3) of the parallel and perpendicularly driven conveyor belts (4), (5). The conveyor belt instantly grips the film and peels it off from the plate.

The plate is further conveyed through the roller slit, so that the film is peeled off over the entire length of the plate,
It is peeled upward and downward with respect to a vertical plane and transported.

In this embodiment, for convenience, a plate peeling device that is fed horizontally is described in detail.

In other embodiments, it is of course also possible for the above-mentioned stripping conveyor belt to be located in a horizontal plane and for the plates to be fed from above to below through appropriate roller slits of a correspondingly operative device. It is possible.

Similarly, instead of the plate being fed in horizontally, it is also possible to feed it horizontally with the narrow side facing down, in which case the entire stripping device would be tilted as well. It will be transferred.

The function of the peeling device will be explained in detail in relation to the sensor unit (EO) to the drive device (AO) to (A7).

The plate (6) is conveyed from the direction of the vacuum chamber, which is arranged on the basis of the stripping device, passes over an infeed roll (8) with a drive device (A3) and passes through the conveyor device (7) for stripping. Move towards the device.

A sensor (E'0) installed in the vacuum chamber area gives a signal that the plate (6) has been fed. After a time delay, the stripping unit moves laterally over the plate (6) while the moving sensor (E1) detects the edge of the plate (6).

The stripping device then immediately stops. The plate is the sensor (E4
), the adhesive tape rolls (1), (2) are lowered via the drive (A4) and the protective film is lifted and peeled off in relation to the slits of the conveyor belts (4), (5). and further transported via conveyor belts (4), (5) in conjunction with drives (AO) and (A2).

When the sensor (E4) senses the edge of the plate and issues a signal, the conveyor belt with the drive (AO) stops;
The protective film protects the drive unit (which is currently switched on).
A1).

At the same time, the adhesive tape roll is also lifted via the drive (A4).

The plate is further passed through a cooling zone by means of a drive (A7), through which the plate (6) is transferred to a delivery platform (1) having delivery rollers (9), (10).
1).

Basic position after being switched on: all drives stopped, adhesive tape roll (1)
, (2) are lifted onto the drive device (A4). The stripping device is in the basic position, in which case the sensor is
=1 signal is issued. In other words, the peeling unit has found its basic position.

Position of sensor and drive device at start: Drive device (A
O), (A2), (A3) and (A7) work.

The sensor (EO) signals the position (1) and starts operating for a certain period of time, and when the certain period of time is reached, the drive is switched off and the drive (A6) is switched on. That is, the drive unit moves the peeling device laterally to the left with respect to the plate.

The sensor (E1) emits the signal (1), thereby
The drive device (A5) is set, thereby stopping the peeling unit. Furthermore, the sensor (E4) emits a signal E4=1, which causes the adhesive tape rolls (1), (2
) is lowered onto the drive device (A4) that has issued the signal (1).

The sensor (E4) then emits 0, which means that the adhesive tape roll has already been lifted, which means that E4=
This corresponds to 1 hour. The drive (AO) is then set to 0 and the reversing drive is switched on via (A1), which operates for a certain period of time to pull up the protective film. Correspondingly, the stripping unit also moves back at the same time, so that A6=0 until sensor E5=1 is reached, that is, until the end point for the left basic position is transmitted.

When sensor E5=1 is switched, drive A1 is switched back to AO after a certain period of start-up, so that A
6=1. In other words, here the drive device (A6) is
The switch is turned on again.

The drive (A6) is preferably a compressed air drive.

The position of the peeling device when the stop switch is pressed: All drive devices (AO), (A2), (A3) and (A7)
is in a stopped state. Adhesive tape roll (1), (2
) is lifted and the peeling unit remains in the basic position.

From the functional description it is clear that here the peeling off of the protective film is easily accomplished in connection with the drive device, but in order to grip the protective film in connection with transport, the drive device (A5) While moving the peeling unit to the right, the drive unit (A6) moves the peeling unit to the left across the plate.

The drive (AO) acts in the upward direction on the upper conveyor belt drive, while the drive (A1) acts in the downward direction on the upper conveyor belt drive.

A conveyor belt device (A2) shown at the bottom of the device rotates a conveyor belt arranged below the plate downwards.

The plate itself is advanced by the drive device (A3) while meeting the feed roller (8), while the plate itself is moved forward by the drive device (A7) while meeting the feed roller (8).
) holds the alignment machine in operation and then transports the plate through the transport platform.

The illustrated sensor (EO) is located at the exit of the vacuum chamber or airlock, while the sensor (E1) is used to navigate towards the ridge.

Although not shown here, an additional sensor (E
2) and (E3) are provided and are used for starting the drive in the plate area, while the sensor (E
3) stops the drive device when the plate leaves the peeling device.

A sensor (E4) movable with the stripping device is used to detect the plate end, while a sensor (E5) located above the device determines the end of the stripping device in the left basic position. There is.

[Brief explanation of drawings]

The figure is a front view of an apparatus according to an embodiment of the present invention. (1), (2)...Adhesive tape rolls (4), (5
)...Transport belt (6)...Plate (7)...Transport device (8)...Feed roller (and above)

Claims (10)

[Claims] (1) One adhesive tape roll is provided, the adhesive tape grips one end of the protective film, and the protective film is peeled off from the plate being carried out by a conveyance device. In the apparatus for: the adhesive tape roll is placed vertically onto the protective film in connection with the creasing based on the feeding movement, and the film is folded into two tapes in a simultaneous continuous motion process. It is housed in the slit of the conveyor belt and is capable of continuous rotation using the peeling device, and a drive device for the plate consisting of a feed roll is formed to detect the protective film. In this case, the sensor device operates the drive device for conveying the plate. (2) the plate is guided through the device via a delivery roll on a horizontal plane, and the lifting and peeling movements of the protective film are carried out on a plane perpendicular to the plate; The device according to claim 1. (3) the protective film peeling device moves laterally to one edge of the plate to which it is fed;
It is further provided that one end of the protective film is gripped by one or more rolls of adhesive tape, in which case the edge of the plate and the associated end of the protective film to be lifted are detected by an electrical sensor unit. 2. The device of claim 1, characterized in that: (4) The sensor unit has a structure for a light interrupter, and is characterized in that the right edge of the plate and the front edge of the plate forming an angle with respect to the right edge in the feeding area are detected. 4. The device according to claim 3, wherein: (5) The apparatus according to claim 1, wherein the conveyor belt has a surface that increases frictional force against the protective film. (6) The apparatus according to claim 1, wherein the peeling device for the protective film applied on both sides is disposed to face the upper and lower sides of the plate. (7) According to claim 1, further comprising another pair of conveyor belts arranged at a distance from each other in parallel with the pair of conveyor belts positioned opposite to each other. The device described. (8) The apparatus according to claim 1, characterized in that the adhesive roll is replaced by a vacuum suction roll or an electrostatic suction roll. (9) In addition to the conveyor belts arranged parallel to each other, another guide belt is provided, and the guide belt is formed of a rotating rubber belt, and the rubber belt is arranged in the upper direction. 2. The device according to claim 1, further supporting the entire surface of the protective film to be peeled downward. (10) After the protective film is peeled off via the sensor device using the slide drive device, the plate is carried out to the carry-out table via the feed-out roll, and at that time,
Claim 1 characterized in that the subsequent plate is guided.
The device described in.