JPH0611194Y2 - Film laminating device for thin metal plates - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a metal thin plate such as an aluminum thin plate, a plastic thin plate, a wooden thin plate, etc. (hereinafter simply referred to as a metal thin plate, a synthetic resin film or a synthetic resin sheet is laminated). TECHNICAL FIELD The present invention relates to a film laminating device for a thin metal plate or the like, and in particular, a double-sided simultaneous film laminating device for a thin metal plate or the like that can be laminated with a simple structure without forming bubbles between the thin metal plate and the synthetic resin film. It is about.

[Prior art and its problems]

Generally, a film laminating device for a thin plate of metal, plastic, wood or the like is provided with at least a pair of pinch rollers, and a thin metal plate or the like and a synthetic resin film coated with an adhesive or an adhesive on one side are drawn between the pinch rollers. Then, these are sandwiched, and the metal thin plate and the synthetic resin film are laminated and fixed to each other via an adhesive or an adhesive. The synthetic resin film is usually wound in a cylindrical roll shape, and is supported by a rotating shaft rotatably supported by a frame via a bearing.

If the synthetic resin film has slack or wrinkles when the thin metal plate or the like and the synthetic resin film are drawn between the pinch rollers, air is trapped between the thin metal plate or the like and the synthetic resin film to form bubbles. Such bubbles cause a metal thin plate laminated with a synthetic resin film later, that is, a metal thin plate is locally deformed when the laminated plate is pressure-molded by a press or the like, resulting in an unsightly uneven pattern on the surface of the metal thin plate. Cause to appear.

Conventionally, in order to prevent the formation of such bubbles, a method of applying a proper tension to the film by placing a hand on the surface of the film roller to give a resistance to the rotation of the film roller has been adopted. .

However, with this method, it is difficult to accurately keep the resistance to rotation of the film roll constant, and it is difficult to reliably prevent the generation of bubbles.

Therefore, in order to give a certain resistance to the rotation of the film roller, a method of interposing a path tension roller of the film unwound from the film roll and biasing the tension roller in a predetermined direction with a spring, or a film A method is conceivable in which a servomotor is interlocked with a rotary shaft that supports rolls to perform dynamic braking.

However, in the method using the tension roller, since the film roller is free to rotate itself, it is not always possible to keep the film tension constant, and in the method using the servo motor, a motor and its controller are required. Therefore, there is a problem that the configuration becomes complicated and the cost becomes high.

The present invention has been made in consideration of the above circumstances,
It is an object of the present invention to provide a film laminating device for a metal thin plate or the like, which has a simple structure and prevents bubbles from being formed between the metal thin plate and the synthetic resin film.

[Means for solving problems]

In order to achieve the above-mentioned object, a film laminating apparatus for a thin metal plate or the like according to the present invention has a rotary shaft for supporting a film roll wound with a synthetic resin film laminated on the thin metal plate, and both ends of the rotary shaft. In a film laminating apparatus for a metal thin plate or the like including a bearing that rotatably supports a portion, an elastically deformable synthetic resin bush is interposed between one end of the rotating shaft and a bearing that supports the rotating shaft, It is characterized in that a pinching means for pinching the bush in the axial direction and an adjusting mechanism for adjusting the pinching force of the pinching means are provided at one end of the rotary shaft.

[Action]

When the adjusting mechanism is operated to increase the clamping force of the clamping means, the bush is installed in the axial direction and expands in the radial direction. This increases the rotational resistance between the bush and the rotary shaft and bearing, increases the resistance to rotation of the film roller supported by the rotary shaft, and imparts the required tension to the film unwound from the film roll. become.

〔Example〕

An embodiment of the present invention will be described in detail below with reference to FIGS.

FIG. 1 is a vertical sectional front view of an essential part of a laminating device for a thin plate such as aluminum according to an embodiment of the present invention, FIG. 2 is an enlarged vertical front view of the essential part, and FIG. It is a vertical side view of a laminator device.

This laminating apparatus is configured such that synthetic resin films F can be laminated on both upper and lower surfaces of a thin plate P such as aluminum which is fed along a pass line 1 set at an intermediate height of the frame 1. It is provided with two pairs of pinch rollers 2 and 3 arranged along the front and back. A pair of guide rollers 4 for preventing the aluminum plate P and the film F from hanging down are arranged between each pair of pinch rollers 2 and 3. Rotating shafts 6 for supporting the film rolls 5 are rotatably supported by bearings 7 on the upper side and the lower side of the front side of the frame 1, respectively. In this laminating apparatus, the film F unwound from the film roll 5 supported by these rotating shafts 6 rolls on the film guide rollers 8 which are arranged on the front side of the frame 1 at symmetrical positions above and below the pass line l. The aluminum plate P is drawn between the pinch rollers 2 so as to sandwich the aluminum plate P from above and below. The pinch rollers 2 and 3 forming each pair are vertically opposed to each other, and the pinching pressure of the pinch rollers 2 and 3 forming each pair adjusts the height of the rollers 2 and 3 above the pinch rollers 2 and 3.
It can be arbitrarily set by adjusting via.

Now, one end of each of the rotary shafts 6 and a bearing 7 supporting the same
As shown in FIGS. 1 and 2, a bush 11 made of a synthetic resin having elasticity is interposed between and. Further, a clamping means 12 for clamping the bush 11 in the axial direction and an adjusting mechanism 13 for adjusting the clamping force of the clamping means 12 are provided at one end of the rotary shaft 6.

The synthetic resin forming the bush 11 is not particularly limited, but it is preferable to use, for example, Duracon, nylon 66 or the like having excellent mechanical properties and abrasion resistance.

The pinching means 12 may be configured so as to pinch the bush 11 in the axial direction, and for example, as shown in detail in FIG. 2, a paragraph surface 12a formed at one end of the rotary shaft 6 and A structure including the pressing plate 12b facing this may be adopted.

The adjusting mechanism 13 only needs to be configured so as to adjust the clamping force of the clamping means 12. For example, as shown in detail in FIG. 2, a bolt 13a for restraining the push plate 12b in the axial end direction.
And a screw hole 13b which is formed at the shaft end and into which the front bolt 13a is screwed.

Each of the rotating shafts 6 has a pair of left and right roll support rollers 14
The film roll 5 is fitted onto these roll supporting rollers 14. Further, the lower pinch rollers 2 and 3 of each pair of pinch rolls 2 and 3 are driven by a motor 15 so as to have the same peripheral surface speed.

According to the laminating apparatus having such a configuration, when the bolt 13a of the adjusting mechanism 13 is tightened in the screw hole 13b, the clamping force of the clamping means 12 is increased, and when the bolt 13a is loosened, the clamping force of the clamping means 12 is increased. Is reduced. When the clamping force of the clamping means 12 is increased, the bush 11 is installed in the axial direction and expands in the inner diameter direction and the outer diameter direction. As a result, the rotational resistance between the one end of the rotary shaft 6 and the bearing 7 is increased,
Tension is applied to the film F unwound from the film roll 5. The tension of the film F can be freely set by adjusting the clamping force of the clamping means 12 by the adjusting mechanism 13, and by applying an appropriate tension to the film F, the film F can be free from slack and wrinkles. It can be drawn between the pinch rollers 2. As a result, these can be laminated without forming bubbles between the aluminum plate P and the upper and lower films F.

[Effect of device]

As described above, according to the present invention, the film is unwound from the film roller by adjusting the pinching force of the pinching means by the adjusting mechanism and arbitrarily adjusting the resistance between the rotating shaft and the bearing supporting the rotating shaft. The film is pulled between the pinch rollers by applying an appropriate tension to the pinch rollers, and the film is pulled between the pinch rollers without any slack or wrinkles. As a result, these can be laminated without forming bubbles between the film and the thin metal plate. Further, once the clamping force of the clamping means is set, the rotational resistance of the rotary shaft is kept constant, so that the tension applied to the film becomes constant and the formation of bubbles can be reliably prevented. Furthermore, since it is sufficient to provide a bush at one end of the rotary shaft, a pinching means for pinching the bushing in the axial direction, and an adjusting mechanism for adjusting the pinching force of the bush, the structure is simple and easy. There is an effect that it can be implemented at low cost.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a main part of a laminating apparatus for laminating thin plates such as aluminum according to an embodiment of the present invention, FIG. 2 is a vertical sectional side view of the laminating apparatus, and FIG. 3 is a III-III line in FIG. FIG. In the figure, P ... Metal thin plate, F ... Film, 5 ... Film roll, 6 ... Rotating shaft, 7 ... Bearing, 11 ... Bushing, 12 ... Clamping means, 13 ... Adjusting mechanism.

Claims (1)

[Scope of utility model registration request] 1. A film laminate for a metal thin plate or the like, which comprises a rotating shaft for supporting a film roll wound with a synthetic resin film laminated on a thin metal plate, and bearings for rotatably supporting both ends of the rotating shaft. In the device, an elastically deformable bush made of synthetic resin is interposed between one end of the rotary shaft and a bearing supporting the rotary shaft, and a pinching means for pinching the bush at one end of the rotary shaft in the axial direction. When,
A simultaneous double-sided film laminating apparatus for a thin metal plate or the like, which is provided with an adjusting mechanism for adjusting the clamping force of the clamping means.