JPS6343292B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum roller for a magnetic coater machine, which attracts a magnetic film sent from a film reel and transfers it to the next processing section or from one film processing system to another.

FIGS. 1 and 2 show a conventional vacuum roller and a vacuum roller device equipped with the vacuum roller.

The vacuum roller device shown in these figures includes frames 1 and 2, a vacuum roller 3 rotatably supported on the frame 1 side, and an inner cylinder 16 fixed on the frame 2 side.

The vacuum roller 3 has a rotating shaft 4, end plates 7 and 8 disposed at both ends in the axial direction, an outer cylinder 10, and a plurality of ceramic blocks 15 assembled thereto. The rotating shaft 4 is supported by one frame 1 via a bearing 5, and is connected to a rotational drive source (not shown) via a gear 6 attached to the end of the shaft. One end plate 7 is connected to a flange 4' provided at the end of the rotating shaft 4 by bolts 9. The outer cylinder 10 is made of metal and is integrally assembled with the end plates 7 and 8. Further, a plurality of grooves 11 are formed on the outer circumferential surface of the outer cylinder 10 at equal intervals in the circumferential direction, and both sides of each groove 11 in the circumferential direction correspond to the wall thickness of the outer cylinder 10. It is considered as a fin-like protrusion 12 as a part,
A vacuum groove 13 is formed inside each groove 11, and a vacuum hole 14 is provided inside each vacuum groove 13. A porous ceramic block 15 is fitted into each groove 11,
It is glued.

A short shaft 17 is provided at one end in the axial direction of the inner cylinder 16, and a hollow shaft 18 is provided at the other end, and the inner cylinder 16 is fixed to the other frame 2 via the hollow shaft 18. ing. A bearing 19 is provided between the short shaft 17 and the end plate 7, and a bearing 20 and a seal member 21 are interposed between the hollow shaft 18 and the end plate 8. In addition, a vacuum groove 22 is formed on the outer peripheral surface of the inner cylinder 16, with a part of the circumference cut out.
A vacuum hole 23 is provided inside the vacuum groove 22.
A vacuum chamber 24 is provided inside the inner cylinder 16.
It is said that Inside the hollow shaft 18, one end communicates with the vacuum chamber 24, and the other end communicates with the blind plug 27.
It is said that the vacuum passage 25 is closed by.
Further, a vacuum pipe 26 connected to a vacuum source (not shown) is attached to the hollow shaft 18.

In this vacuum roller device, vacuuming is performed through a vacuum source, a vacuum pipe 26, a vacuum passage 25, a vacuum chamber 24, a vacuum hole 23 provided in the inner cylinder 16, and a vacuum groove 22, and a rotary drive source, a gear 6, and a rotating shaft. As the vacuum roller 3 is rotated via the vacuum groove 22, a
When the vacuum holes 14 provided in the outer cylinder 10 of the vacuum roller 3 are fed one after another, the vacuum grooves 13 of the outer cylinder 10 communicating with the vacuum holes 14 communicating with the vacuum grooves 22 and the ceramic block 15 generate magnetism. The films 29 are attracted one after another and are sequentially transferred as the vacuum roller 3 rotates.

However, the conventional vacuum roller 3
In this case, on both sides of a groove 11 for fitting a ceramic block formed in a metal outer cylinder 10,
A protrusion 12 for holding a ceramic block 15 is provided, and after the ceramic block 15 is fitted into the groove 11 and bonded, the vacuum roller 3
When the surface of the protrusion 12 is ground and finished, the surface of the protrusion 12 is likely to be damaged by chips from the ceramic block 15. If the surface of the vacuum roller 3 including the surface of the protrusion 12 is scratched, there is a problem that the magnetic properties of the magnetic film 29 are adversely affected. Further, during the grinding process, sufficient care must be taken not to damage the surface of the protrusion 12, so if the protrusion has poor workability and is plated, extreme care must be taken.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vacuum roller for a magnetic coater machine that does not adversely affect the magnetic properties of the magnetic film, has good workability, and can increase the suction area.

The present invention is characterized by a ceramic crawler in which a plurality of air permeable ceramic blocks are arranged in the circumferential direction, the adjacent ceramic blocks in the circumferential direction are joined together, and the joined part has a non-air permeable structure. With this configuration, the above objective was reliably achieved.

Hereinafter, the present invention will be explained based on the drawings.

3 and 4 show an embodiment of the present invention, in which a ceramic roller 33 is attached to the outer peripheral surface of a metal outer cylinder 30. FIG.

A plurality of vacuum grooves 31 are formed on the outer peripheral surface of the outer cylinder 30 at equal intervals in the circumferential direction, and a vacuum hole 32 is provided inside each vacuum groove 31.

As shown in FIG. 3, the ceramic roller 33 is constructed by combining ceramic blocks 34 arranged one on the outside of each vacuum groove 31 formed in the outer cylinder 10. Each ceramic block 34 is porous and has air permeability. Further, each ceramic block 34 is bonded to the outer peripheral surface of the outer cylinder 30 with an adhesive 35. Ceramic blocks 3 adjacent to each other in the circumferential direction
A fine ceramic kneaded material 36 is embedded between the blocks 4 and 34 to make them impermeable to air, and the blocks are partitioned so that adjacent ceramic blocks 34 and 34 do not communicate with each other.

A ceramic block 34 is provided on the outside of the outer cylinder 30.
are arranged, and each ceramic block 34 is connected to the outer cylinder 30.
A fine ceramic kneading material 36 is bonded to the ceramic blocks 34 and 34 adjacent to each other in the circumferential direction.
After embedding and solidifying, ceramic crawler 33
Grind the outer peripheral surface and perform surface finishing. During this grinding process, the outer peripheral surface of the metal outer cylinder 30 is completely covered by the ceramic roller 33, so it is possible to completely eliminate the problem of damage to the outer cylinder 30 caused by chips from the ceramic block 34. .

Furthermore, since the gap between the ceramic blocks 34, 34 adjacent to each other in the circumferential direction can be reduced, the area to which the magnetic film 29 is attracted can be increased.

Further, in the embodiments shown in FIGS. 3 and 4, glass may be embedded between the ceramic blocks 34, 34 adjacent to each other in the circumferential direction.

The other configurations and functions of the embodiment shown in FIGS. 3 and 4 are the same as those shown in FIGS. 1 and 2, and in FIGS. The same members as those shown in FIG. 2 are denoted by the same reference numerals, and further explanation will be omitted.

Next, FIGS. 5 to 8 show various other embodiments of the present invention.

In the case shown in FIG. 5, the contact surfaces of each ceramic block 34 and the outer cylinder 30, and the circumferentially adjacent ceramic blocks 34, 34 are bonded with an adhesive 37. As a result, in this embodiment, the adsorption area of the ceramic block 34 can be further increased.

Further, in the case shown in FIG. 6, the ceramic roller 38 is formed by bonding ceramic blocks 39 arranged in the circumferential direction with an adhesive 40, and the ceramic roller 38 is directly rotated around the inner cylinder 16. I try to let them do it.

Furthermore, in the case shown in FIG. 7, the outer shape of the outer cylinder 41 is formed into a regular polygon, and a ceramic block 43 is formed to match one side of the outer shape of the outer cylinder 41.
are arranged and bonded to a ceramic block 43 and an outer cylinder 41 with an adhesive 44 to form a ceramic crawler 42.

Next, in the case shown in FIG. 8, a synthetic resin coating agent is applied to the surface of the ceramic block to form a thin film 46 on the surface of the ceramic particles 45 that does not impede air permeability, and the corners of the ceramic particles 45 are coated with a synthetic resin coating agent. to prevent damage to the magnetic film.

For other configurations and functions of the embodiment shown in FIGS. 5 to 8, see FIGS. 3 and 8 above.
This is similar to the embodiment shown in FIG.

The present invention has the configuration and operation described above,
According to the present invention, a plurality of ceramic blocks are arranged in the circumferential direction, and the magnetic film is attracted and transferred by a ceramic crawler that connects these ceramic blocks together and makes the joint part impermeable. This has the effect of completely eliminating the negative effect on the magnetic properties of the magnetic film caused by scratches from rotating bodies such as metal outer cylinders, and also prevents the metal from being damaged by chips from ceramic blocks during grinding of ceramic crawlers. Since there is no fear of damaging the surface of the rotating body, it has the effect of significantly improving workability.

Furthermore, according to the present invention, since the gap between adjacent ceramic blocks in the circumferential direction can be reduced, the magnetic film attraction area can be increased, and the transfer speed can therefore be increased. be.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view showing the prior art, FIG. 2 is a longitudinal sectional side view thereof, FIG. 3 is a longitudinal sectional side view showing an embodiment of the present invention, and FIG. 4 is a partially enlarged view of FIG. 3. Fifth
Figures 8 through 8 are partially enlarged views of various embodiments of the present invention. 29... Magnetic film, 30... Vacuum roller outer cylinder, 33... Ceramic roller, 34...
...Ceramic block, 35...Adhesive, 36...
...Fine ceramic kneaded material, 37...Adhesive material, 3
8... Ceramic roller, 39... Ceramic block, 40... Adhesive, 41... Outer cylinder, 42...
... Ceramic roller, 43 ... Ceramic block, 44 ... Adhesive, 45 ... Ceramic particles,
46...film.

Claims (1)

[Claims] 1. Equipped with a ceramic crawler in which a plurality of breathable ceramic blocks are arranged in the circumferential direction, the circumferentially adjacent ceramic blocks are joined together, and the joined part has a non-breathable structure. A vacuum roller for magnetic coater machines featuring: