Laser beam machine for sheet-like work

The present invention relates to a laser processing machine for a sheet-shaped work, in which the sheet-shaped work is positioned and fixed in a processing region on a moving table, and the moving table and the laser processing means are moved relative to each other for processing.

A processing area of a long flexible printed circuit board, which is a sheet-shaped workpiece, is fixed, and a moving table that can move in three axial directions orthogonal to each other and a laser beam irradiating means for irradiating the flexible printed circuit board with laser light are provided. The processing device rolls an unprocessed flexible printed circuit board that is placed on one side of the processing device and unwound in a roll shape, and a flexible printed circuit board that is placed on the other side of the processing device and has been processed. A winding device for winding in a shape is provided, and the sheet-shaped workpiece forms a free loop (deflection) of a predetermined length between the processing device and the unwinding device and between the processing device and the unwinding device. A laser processing machine is known in which the moving table can be moved during processing (Patent Document 1).

<patcit num="1"><text>Japanese Unexamined Patent Publication No. 2000-246479</text></patcit>

<p> However, in order to prevent the flexible printed circuit board from being damaged by twisting or the like when the moving table moves during processing, it is necessary to prevent the flexible printed circuit board from being damaged due to twisting or the like between the processing device and the unwinding device and between the processing device and the winding device. It is necessary to provide a sufficient distance for each, and there is a problem that the installation area of the entire device becomes large.</p><p> Therefore, an object of the present invention is to provide a laser processing machine for a sheet-shaped workpiece that can be easily controlled while reducing the installation area.</p>

<p> In order to solve the above-mentioned problems, the present invention according to claim 1 includes a laser beam irradiating means (30,31,32,33,34) installed on a bed (1) and capable of irradiating a laser beam, and at least. A moving table (5) provided so as to be movable in a plane direction (XY plane direction) perpendicularly intersecting with the laser beam, and a supply side roll (40) in which a sheet-shaped work (w) is wound in a roll shape. A supply-side roll holding device (11) capable of supplying the sheet-shaped work (w) on the moving table (5) while holding the moving table, and a roll-shaped winding of the processed sheet-shaped work (w). It is equipped with a take-up side roll holding device (12) that can take up the sheet-shaped workpiece on the moving table (5) while holding the take-side roll (41), and is provided on the moving table (5) at the time of processing. While fixing the sheet-shaped work (w) in the processing region of the above, the laser beam is moved while the moving table (5) and the laser beam irradiating means (30, 31, 32, 33, 34) are relatively moved. A laser processing machine for sheet-shaped workpieces that processes the sheet-shaped workpiece (w) in the processing region on the moving table (5) by irradiating the laser beam with the irradiating means (30, 31, 32, 33, 34). In (50), at least one of the supply side roll holding device (11) and the winding side roll holding device (12) is arranged on the moving table (5).</p><p> Further, in the present invention according to claim 2, the supply side roll holding device (11) and the winding side roll holding device (12) are placed on one side of the moving table (5) with respect to the processing area. Arrange in.</p><p> Further, the present invention according to claim 3 is a sheet when the sheet-like work is being wound while being supplied by the supply side roll holding device (11) and the winding side roll holding device (12) after the processing is completed. A moving means (20) for holding the shaped work (w) and moving it in a desired amount in the winding direction is provided.</p><p> The reference numerals in parentheses are for comparison with the drawings, but this is for convenience of facilitating the understanding of the invention and has no effect on the structure of the claims. It's not a thing.</p>

<p> Since the number of places where a free loop is formed on the sheet-shaped work is reduced by at least one, the installation area of the entire laser machine can be reduced. Moreover, since there are few components, control is easy.</p>

Hereinafter, the present invention will be described based on the illustrated embodiment.

FIG. 1 is a partial front sectional view of the laser processing machine according to the present invention, and FIG. 2 is an enlarged view of part A in FIG.

In the laser processing machine 50 according to the present invention, the gate-shaped column 30 is fixedly installed on the bed 1. In the column 30, a laser oscillator 31, a plurality of mirrors 32 (two in the figure), a pair of galvano scanner mirrors 33, and an fθ lens 34 are arranged.

The linear guide device 2 is arranged on the upper surface of the bed 1. The X table 3 can be moved in the X direction on the bed 1 by the linear guide device 2. The linear guide device 4 is arranged on the upper surface of the X table 3. The Y table (moving table) 5 can be moved in the Y direction on the X table 3 by the linear guide device 4. With the above configuration, the Y table 5 is movable in the XY directions with respect to the bed 1.

As shown in FIG. 2, a processing table 6 and a reel holder 10 are arranged on the upper surface of the Y table 5. A groove 6 m having a width equal to or larger than the width of the sheet-shaped work (hereinafter, simply referred to as work) w is formed on the lower surface of the processing table 6 in the X direction. A plurality of holes connecting to an internal hollow portion (not shown) are formed on the upper surface of the processing table 6, and the internal hollow portion (not shown) is connected to a vacuum source (not shown). Further, the reel holder 10 is arranged with a supply reel 11, a take-up reel 12, a guide roller 13.14,15, a clamper 16,17, a reversing roller 18, and a work transfer device (moving means) 20.

The lower end 11b of the shaft of the supply reel 11 is arranged in the reel holder 10 so as to be lower than the upper end 13t of the guide roller 13, and is rotatable by a motor (not shown). That is, the supply reel 11 holds a supply roll 40 in which an unprocessed work w is wound in a roll shape, and can supply the work w by driving a motor (not shown) (supply side). Roll holding device).

Further, the take-up reel 12 is arranged at a position where the lower end of the take-up roll 41 of the taken-up work w is above the lower end 14b of the guide roller 14, and is rotatable by a motor (not shown). .. That is, the reel shaft 12 holds a take-up reel 41 in which the processed work w is wound in a roll shape, and the work w can be taken up by driving a motor (not shown). Take-up side roll holding device).

The rotatable guide roller 13 is supported by the reel holder 10 so that the upper end 13t is above the surface of the processing table 6. The rotatable guide rollers 14 and 15 are supported by the reel holder 10 so that the lower ends 14b and 15b are below the bottom surface of the groove 6 m.

The clampers 16 and 17 are composed of pedestals 16u and 17u and retainers 16p and 17p arranged to face the pedestals 16u and 17u. It is movable in the vertical direction in the figure). The cradle 16u is in the standby position when it is at the descending end, and at this time, the upper surface is lower than the surface of the processing table 6, and the upper surface when it is at the rising end is the same as the upper end 13t of the guide roller 13. Each is positioned at a height position. Further, the descending end of the presser 16p is a position slightly lower than the upper surface of the pedestal 16u in the standby position so that the lower surface of the presser 16p can press against the upper surface of the pedestal 16u in the standby position. .. Further, the descending end of the presser 17p is also located slightly below the upper surface of the pedestal 17u so that the lower surface of the presser 17p can press against the upper surface of the pedestal 17u.

The rotatable reversing roller 18 is supported by the reel holder 10 so that its upper end 18t is at the same height as the upper end 13t of the guide roller 13.

The work transfer device 20 can be moved and positioned in the X direction with respect to the reel holder 10 by means such as a motor and a guide rail mechanism (not shown). A clamper 21 is supported on the work transfer device 20. The clamper 21 is composed of a presser foot 21p that can move in the vertical direction and a cradle 21u. As shown by the solid line in FIG. 2, the standby position of the cradle 21u is a position where the upper surface is lower than the upper surface of the processing table 6, and the rising end is the same as the upper end 13t of the guide roller 13 and the upper end 18t of the reversing roller 18. The height position. As shown by the solid line in the figure, the standby position of the presser foot 21p is a position where the lower surface is above the height of the upper end 13t of the guide roller 13 and the upper end 18t of the reversing roller 18, and the lower end is the presser foot 21p. The lower surface of the pedestal is located slightly below the upper surface of the pedestal 21u at the rising end so that the lower surface of the pedestal 21u can be pressed against the upper surface of the pedestal 21u at the rising end. The standby position of the work transfer device 20 in the X direction is the left end of the movement shown by the solid line in the figure, and the right end of the movement is the position shown by the dotted line in the figure.

Next, the operation of the laser processing machine 50 will be described with reference to the drawings. FIG. 3 is an operation explanatory diagram showing the operation of the present invention.

First, the setup work will be described.

With the clampers 16, 17 and 21 all open in advance (positioning the cradle 16u and 21u in the standby position and the pressing 16p, 17p and 21p rising ends, respectively), the supply roll 40 is supported by the supply reel 11. As shown in the figure, the work w is wound around the reversing roller 18, and then the groove 6 m of the processing table 6 is passed through the work w, and the end portion is fixed to the take-up reel 12 (take-up roll 41).

Next, as shown in FIG. 3A, the presser foot 16p is operated (that is, the presser foot 16p is lowered) with the supply reel 11 and the take-up reel 12 applied with torque in the clockwise direction in the drawing. ), Fix the work w with the cradle 16u. Next, the presser 17p is operated (that is, the presser 17p is lowered), and the work w is fixed to and from the cradle 17u. As a result, the work w is fixed to the surface of the processing table 6 without slack. In this state, a vacuum source (not shown) is operated to bring the work w into close contact with the surface of the processing table 6.

Then, processing is performed. That is, the laser oscillator 31 is operated, and the laser beam output from the laser oscillator 31 is guided to the galvano scanner mirror 33 via the mirror 32. Then, the laser beam is positioned by the galvano scanner mirror 33, the optical axis of the laser beam is made vertical by the fθ lens 34, and the laser beam is incident on the work w to process the work w. When the processing of the region determined by the fθ lens 34 is completed, the X table 3 or the Y table 5 is moved to perform the processing.

Next, the work moving process after the processing is completed will be described.

When the processing is completed, the vacuum source (not shown) is stopped, and then the pressing 16p is raised as shown in FIG. 3 (b).

Next, as shown in FIG. 3C, the clamper 21 is operated, that is, the cradle 21u is raised, then the presser foot 21p is lowered, and the presser foot 21p and the cradle 21u hold the work w.

Next, as shown in FIG. 3 (d), the presser foot 17p is raised. As a result, the work w is positioned at the height position at the upper end 13t of the roller 13 and the upper end 18t of the roller 18 (see FIG. 2).

In this state, as shown in FIG. 3 (e), the work transfer device 20 is moved to the right side of the figure by a desired distance (desired amount). At this time, while the work w is supplied by the supply reel 11, the work w whose processing has been completed is wound by the take-up reel 12.

Next, as shown in FIG. 3 (f), the cradle 16u is moved to the ascending end, and then the presser 16p is lowered as shown in FIG. 3 (g), and the work w is held by the clamper 16.

Next, as shown in FIG. 3 (h), the clamper 21 is released (in this case, the presser foot 21p is at the rising end, and the upper surface of the cradle 21u is not in contact with the work w and is in contact with the upper surface of the processing table 6). (Move them to the positions where they are not used.), And as shown in Fig. 3 (i), return the work transfer device 20 to the standby position.

Next, as shown in FIG. 3 (j), after positioning the cradle 21u in the standby position, as shown in FIG. 3 (k), the presser 17p is lowered and the work w is held by the clamper 17.

Then, as shown in FIG. 3 (l), the clamper 16 is released.

After that, the cradle 16u is positioned in the standby position, then the presser 16p is lowered, the work w is held by the clamper 16 (see FIG. 3A), a vacuum source (not shown) is operated, and the work w is moved. Adhere to the processing and perform the next processing. After that, the above steps are repeated in the same manner.

During the above steps and during machining, the motor that rotates the supply reel 11 and the take-up reel 12 is driven with a torque within a range that does not adversely affect the work w, and tension is applied to the work w to apply tension to the work. Control w so that slack does not occur. By urging the roller 13, the roller 14, the reversing roller 18, etc. in a predetermined direction with a spring or the like, tension may be applied to the work w so that slack does not occur.

As described above, according to the laser processing machine 50 for the sheet-shaped work according to the present invention, it is possible to eliminate the place where the free loop is formed in the sheet-shaped work, and it is possible to reduce the installation area of the entire laser processing machine 50. it can. Moreover, since there are few components, control is easy.

Further, since the supply reel and the take-up reel are arranged on one side of the processing table 5, the installation area of the entire laser processing machine 50 can be reduced as compared with the case where the supply reel and the take-up reel are arranged on both sides of the processing table 5.

In the present embodiment, both the supply reel 11 and the take-up reel 12 are arranged on the Y table 5, but at least one of the supply reel 11 and the take-up reel 12 is placed on the Y table 5. Since at least one free loop can be reduced by arranging in, the installation area of the entire laser processing machine 50 can be reduced as compared with the conventional case.

<figref num="1">It is a partial front sectional view of the laser processing machine which concerns on this invention.</figref><figref num="2">It is an enlarged view of part A in FIG.</figref><figref num="3">It is an operation explanatory drawing which shows the operation of this invention.</figref>

Code description

1 Bed 5 Moving table (Y table) 11 Supply side roll holding device (reel shaft) 12 Winding side roll holding device (reel shaft) 20 Moving means (work transfer device) 30 Laser light irradiation means (column) 31 Laser light irradiation Means (laser oscillator) 32 Laser light irradiation means (mirror) 33 Laser light irradiation means (galvano scanner mirror) 34 Laser light irradiation means (fθ lens) 40 Supply side roll (supply roll) 41 Winding side roll (winding roll) 50 Sheet-shaped work laser processing machine w Sheet-shaped work