JP7629783B2 - Plate material loading and unloading device - Google Patents

Description

The present invention relates to a plate material loading and unloading device.

One such type of plate material loading/unloading device is disclosed in Patent Document 1. This plate material loading/unloading device includes a storage rack erected near the laser processing machine, an elevator mounted on one side of the storage rack so that it can rise and fall, a traverser for loading and unloading the processing table into the elevator, and a brush mounted near one side of the storage rack for cleaning the skids. This brush is configured to clean all of the support parts of the multiple skids on the empty processing table by contact when the traverser pulls an empty processing table from the table waiting section into the elevator.

JP 2007-911 A

However, with the conventional plate material loading/unloading device, when the brush comes into contact with molten material that is firmly attached to the skid or scrap that is welded to the support part of the skid, the tip of the brush deforms upward, and sufficient removal effect cannot be expected.

Therefore, one aspect of the present invention has been made to solve the above-mentioned problems, and is a plate material loading and unloading device that can easily and reliably remove and clean deposits that are firmly attached to multiple skids on a processing pallet.

One aspect of the present invention is a plate material loading/unloading device comprising: a storage rack provided in the vicinity of a laser processing machine and having a processed pallet storage section; a processed pallet having a plurality of skids supporting plate material with a number of support parts having sharp tips and stored in the processed pallet storage section; a lifter provided on one side of the storage rack and capable of rising and lowering; a traversal provided on the lifter and movable toward and away from the storage rack, capable of holding the processed pallet, and for moving the processed pallet into and out of the lifter to transport the processed pallet in and out; and a plurality of cleaning members provided on the empty processed pallet stored in the processed pallet storage section and lowered when the empty processed pallet is pulled into the lifter from the processed pallet storage section or when the empty processed pallet is sent out from the lifter to the processed pallet storage section, thereby contacting both side surfaces of all of the skids in the empty processed pallet and rotating to remove any attached matter attached to the skids, wherein the plurality of cleaning members are composed of a plurality of cleaning blades which contact both side surfaces of all of the skids and rotate to remove any attached matter. According to this aspect, the deposits enter between the cleaning blades and are twisted off, so that the deposits strongly attached to the support portion of the skid are easily and reliably removed and cleaned.

According to one aspect of the present invention, it is possible to easily and reliably remove and clean deposits that are firmly attached to multiple skids on a processing pallet.

FIG. 1 is a perspective view showing an example of a plate material carrying-in/out device according to an embodiment of the present invention. FIG. 2 is a perspective view of a cleaning unit group of the plate material carry-in/out apparatus. FIG. 3 is a side view, partly in section, of the cleaning unit prior to its lowering onto the skid of the processing pallet. FIG. 4 is a side view, partly in section, of the cleaning unit lowered onto the skid of the processing pallet. FIG. 5 is a front view of the cleaning unit lowered onto the skid of the processing pallet. FIG. 6 is an enlarged side view of the cleaning blade of the cleaning unit. FIG. 7 is a front view showing a state in which the cleaning blade group of the cleaning unit moves following the curved skid. FIG. 8(a) is a side view, partially in cross section, showing the cleaning unit in a cleaning state, and FIG. 8(b) is a side view, partially in cross section, showing the cleaning unit in a retracted state after the cleaning blade has come into contact with welded scrap firmly welded to the support portion of the skid.

The following describes in detail the plate material loading/unloading device according to an embodiment of the present invention using the drawings.

Figure 1 is a perspective view showing an example of a workpiece loading/unloading device according to an embodiment of the present invention. Figure 2 is a perspective view of a cleaning unit group of the workpiece loading/unloading device. Figure 3 is a side view, partially in section, showing the state before the cleaning unit is lowered onto the skid of the processing pallet. Figure 4 is a side view, partially in section, showing the state after the cleaning unit has been lowered onto the skid of the processing pallet. Figure 5 is a front view showing the state after the cleaning unit has been lowered onto the skid of the processing pallet. Figure 6 is an enlarged side view of a cleaning blade of the cleaning unit. Figure 7 is a front view showing the state after the cleaning blade group of the cleaning unit has moved following the curved skid. Figure 8(a) is a side view, partially in section, showing the cleaning state of the cleaning unit. Figure 8(b) is a side view, partially in section, showing the state after the cleaning blade has come into contact with the welded scrap firmly welded to the support part of the skid and the cleaning unit has retreated. In FIG. 1, "FF" indicates the forward direction, "FR" indicates the rearward direction, "L" indicates the leftward direction, "R" indicates the rightward direction, "X" indicates the left-right direction, and "Y" indicates the front-rearward direction.

As shown in FIG. 1, the plate material loading/unloading device 1 in this embodiment is a device that uses a processing pallet 10 stored in the processing pallet storage section 6 of the storage rack 2 to load iron plate materials (both not shown) into the laser processing machine and unload processed plate materials.

In detail, the plate material carrying-in/out device 1 according to this embodiment includes a storage rack 2 having a processing pallet storage section 6, which is erected near the laser processing machine, a processing pallet 10 having a plurality of skids 15 supporting plate materials with a number of supports 15a having sharp tips and stored in the processing pallet storage section 6, a traverser 30 which is movable in a direction approaching and receding from the storage rack 2 and capable of holding the processing pallet 10, and which carries the processing pallet 10 in and out of the lifter 20, and a plurality of cleaning members 54 which rotate and contact both side surfaces 15b, 15b of all the skids 15 of the empty processing pallet 10 to remove the deposits 17 attached to the skids 15 when the traverser 30 pulls the empty processing pallet 10 from the processing pallet storage section 6 or sends the empty processing pallet 10 to the processing pallet storage section 6, and the plurality of cleaning members are made of a plurality of cleaning blades. The specific configuration of the plate material carrying-in/out device 1 will be described below.

As shown in FIG. 1, the plate material loading/unloading device 1 includes a storage rack 2, a processing pallet 10, a lifter 20, a traverser 30, a lifting frame 40, and a plurality of cleaning units 50 attached to the lifting frame 40 for removing deposits from the skid 15. In other words, when the plate material loading/unloading device 1 moves on a path K (in FIG. 1, the movement range of the processing pallet 10 is shown based on the rear end of the processing pallet 10) which is the range in which the processing pallet 10 moves within the storage rack 2, the plurality of cleaning units 50 move up and down on the processing pallet 10 to remove deposits from the skid 15 when the empty processing pallet 10 on which no processing plate material or processed plate material is placed is pulled from the processing pallet storage section 6 of the storage rack 2 to the lifter 20.

The storage rack 2 is erected near the laser processing machine and is composed of four vertically extending pillars 3, four short members 4 that are suspended between two pillars 3, 3 located on both the left and right sides, and four long members 5 that are suspended between two pillars 3, 3 located on both the front and back sides. The number and size of the pillars 3 and the members 4, 5 vary depending on the specifications of the storage rack 2. This storage rack 2 has a processing pallet storage section 6 in the middle section that stores a processing pallet 10. The laser processing machine is installed near the left side (left direction L) or right side (right direction R) of the storage rack 2. Furthermore, the processing pallet storage section 6 is publicly known, for example as shown in JP 2001-97505 A, so a detailed configuration of the processing pallet storage section 6 is omitted.

As shown in Figures 1 and 5, the processing pallet 10 has a frame-shaped pallet base 11, and a number of support members 12, each long in the left-right direction X, are provided on the pallet base 11 at appropriate intervals in the front-rear direction Y. A number of skids 15, each long in the front-rear direction Y, are provided on the plurality of support members 12 at equal intervals in the left-right direction X. Each skid 15 has a number of sharp (saw-tooth) support parts 15a at its upper part, and the underside of the plate material is supported by these support parts 15a at lines or points. The processing pallet 10 is then stored in the processing pallet storage section 6 of the storage rack 2.

When the plate material is placed horizontally on the skid 15 of the processing pallet 10 and the processing pallet 10 is carried into the laser processing machine for laser processing, the molten material such as dross is blown downward by the assist gas ejected from the nozzle on the laser processing head of the laser processing machine. This blowing cools the molten material and causes the adhesion as a welded material to adhere to the support part 15a and both side surfaces 15b, 15b of the skid 15. In addition, cut scraps and the like adhere as adhesion to the support part 15a and both side surfaces 15b, 15b of the skid 15 together with the molten material. The skids 15 in the processing pallet 10 are installed in a curved state in the left-right direction X so that the skid 15 always moves on one skid 15 when laser processing is performed along the front-back direction Y, and the molten material and the welded material do not adhere continuously to the skid 15. In addition, if the deposits are not removed before they become too large on the skid 15, the next plate may be supported in a raised position, so the deposits on the skid 15 are removed using the cleaning unit 50, which will be described later.

As shown in FIG. 1, the lifter 20 is provided in front of the storage rack 2 so that it can rise and fall, and is raised and lowered by a lifter motor (not shown) provided on the top of the storage rack 2. The lifter 20 is also provided with a traverser 30 that moves the processing pallet 10 in and out of the lifter 20 so that it can move in the forward and backward directions Y toward and away from the storage rack 2. The traverser 30 moves in the forward and backward directions Y by a self-propelled motor (not shown) and can hold the processing pallet 10. The processing pallet 10 is inserted and removed from the lifter 20 to transport the plate material on the processing pallet 10. The lifter 20 and the traverser 30 are publicly known, as shown in, for example, Japanese Patent Application Laid-Open No. 2001-113392 and Japanese Patent Application Laid-Open No. 11-254165, and therefore detailed configurations of the lifter 20 and the traverser 30 are omitted.

As shown in FIG. 1, the lifting frame 40 is provided so as to be able to rise and fall so as to come into contact with the processing pallet 10 when it moves on the path K, which is the range in which the processing pallet 10 moves from inside the storage rack 2. More specifically, as shown in FIG. 1 and FIG. 2, the lifting frame 40 is moved up and down by pneumatic cylinders (actuators) 42 provided on two supports 3, 3 located on both sides in front of the storage rack 2, via brackets 41 fixed to both ends of the lifting frame 40. The lifting frame 40 is guided so as to move vertically up and down by guide bars 43 arranged on both sides.

1, 2, and 3, the cleaning units 50 are attached to the front surface 40a of the lifting frame 40. When an empty processing pallet 10 moves from inside the storage rack 2 along the path K, which is the range in which the processing pallet 10 moves, the cleaning units 50 attached to the lifting frame 40, which can move up and down, are lowered onto the skid 15 of the processing pallet 10. Each cleaning unit 50 includes a U-shaped mounting bracket 51, a hinge 52, a support shaft 53, a plurality of cleaning blades (cleaning members) 54, and a tension coil spring (elastic member) 55. As shown in FIGS. 1 and 2, the cleaning unit 50 facing the clamp 13 that connects the pillow member 12 of the processing pallet 10 is disposed at a position further back than the other cleaning units 50 that do not face the clamp 13 so as not to interfere with the clamp 13. In addition, in the case of a processing pallet that does not include a clamp 13 or a mechanism for avoiding interference with the clamp 13 (for example, avoiding the clamp 13 up and down), the cleaning units 50 may be disposed on the same line.

As shown in Figures 2 and 3, the mounting bracket 51 is formed in a flat U-shape with a back plate 51a and two side plates 51b, 51b bent vertically from both ends of the back plate 51a. The back plate 51a of the mounting bracket 51 is attached to the lifting frame 40 via a hinge 52. The hinge 52 is fixed to the back plate 51a of the mounting bracket 51 with a bolt 56A and includes a movable bracket 52b that rotates together with the rotating shaft 52a, and a fixed bracket 52c that rotatably supports the rotating shaft 52a and is fixed to the upper surface 40b of the lifting frame 40.

As shown in FIG. 3, a tension coil spring (elastic member) 55 is interposed between the back plate 51a of the mounting bracket 51 and the fixed bracket 44 fixed to the rear surface 40c of the lifting frame 40. This tension coil spring 55 is an elastic member that pulls and urges the cleaning unit 50 toward the lifting frame. As shown in FIG. 8(b), if an overload is applied to the cleaning blade 54 when removing deposits, the cleaning unit 50 swings upward by the hinge 52 against the urging force of the tension coil spring 55, and retreats from the processing pallet 10. A buffer plate 45 that abuts against the front surface 40a of the lifting frame 40 is attached to the back plate 51a of the mounting bracket 51.

As shown in Figs. 5 and 7, both ends of the support shaft 53 are fastened and fixed to both side plates 51b, 51b of the mounting bracket 51 via bolts 56B. Cleaning blades (cleaning members) 54, arranged at intervals in groups of multiple blades, are rotatably supported on the support shaft 53 via a cylindrical collar 57. In more detail, as shown in Fig. 6, the cleaning blade 54 is formed by cutting a circular iron plate, etc., to have multiple blades 54b that extend radially from a circular center hole 54a and scrape off deposits. These multiple blades 54b come into contact with both side surfaces 15b of all skids 15 in the empty processing pallet 10 and rotate, scraping off and removing deposits such as molten material and welded material that are attached to the skids 15 (including 15a and 15b).

Next, the number, size, and lowering position of the cleaning blades 54 will be described in detail. The number of cleaning blades 54 is four for one skid 15, but it may be a minimum of two. However, as described above, the skid 15 may be arranged in a curved state in the left-right direction X, or in a straight state without being curved. Furthermore, when used for processing, it may be deformed due to adhesions or heat. Therefore, by increasing the number of cleaning blades 54 and installing them to be able to respond to changes in shape and state to some extent, the cleaning blades 54 are installed so that they are reliably in contact with both side surfaces 15b, 15b of the skid 15. In addition, the length of the blade 54b of the cleaning blade 54 is set to be equal to the height of the peaks of the skid 15. If adhesions accumulate in the valleys of the skid 15, the adhesions will affect the laser processing and the processing quality will decrease, so in order to maintain the processing quality, it is desirable to make the length of the blade 54b of the cleaning blade 54 approximately equal to the height of the peaks of the skid 15. Furthermore, the position to which the cleaning blade 54 descends is set to a position where the skid 15 enters near the base of the blade 54b. By descending to this position, the deposits on the lower side surface 15b of the skid 15 can be reliably removed. Although the number of blades 54b of one cleaning blade 54 is 18, this number may be increased or decreased as appropriate. If the number is reduced, the gap between the blades 54b becomes wider, making it easier for deposits to get between them. As shown in Figures 5, 6, and 7, the multiple cleaning blades 54 are rotatably supported by the small diameter portion 57a of a cylindrical collar 57 that rotates around the support shaft 53. Furthermore, the cleaning blades 54 are divided into groups of multiple blades by the medium diameter portion 57b and the large diameter portion 57c of the cylindrical collar 57 at intervals, and are also partitioned by a circular plate-shaped collar 58.

Next, the width of the annular collar 58 will be described in detail. When considering problems such as galling between the cleaning blade 54 and the skid 15 or the deposits, such as when the skid 15 is curved or deformed, or when a large amount of deposits have accumulated, the collar 58 needs to have a width that can maintain a certain degree of clearance. Therefore, the width of the collar 58 is set to be 1 mm wider than the thickness of the skid 15. In order to reliably remove deposits from both side surfaces 15b, 15b of the skid 15, it is desirable for the width of the collar 58 to be close to the thickness of the skid 15. In addition, the reference numeral 17 in FIG. 8(a) indicates the molten material (deposits), and the reference numeral 18 in FIG. 8(b) indicates the welded scrap (deposits).

Furthermore, as shown in Figs. 5 and 7, a compression coil spring (elastic member) 59 is interposed on the support shaft 53 between the medium diameter portion 57b of the cylindrical collar 57 located at one end side of the cleaning blade 54 divided into groups of multiple blades and one side plate 51b of the mounting bracket 51. This compression coil spring 59 is attached in the direction in which the curvature of the skid 15 expands, so that the cleaning blade 54 can be moved following the skid 15, and load is prevented from being applied to the cleaning unit 50. In Fig. 5, the compression coil spring 59 is arranged on the left side, but if the curvature of the skid 15 is reversed, it is preferable to attach the compression coil spring 59 to the right side. And, as shown in Fig. 7, when the skid 15 is curved in the left-right direction X in the processing pallet 10, the cleaning blade 54 divided into groups of multiple blades moves in the direction of the arrow D against the biasing force of the compression coil spring 59 so as to follow the curved skid 15.

According to the plate material loading/unloading device 1 of the above embodiment, the processing pallet 10 of the processed product is transported from the laser processing machine to the storage rack 2, and the product on the processing pallet 10 is removed to become an empty processing pallet 10. When the empty processing pallet 10 is moved onto the lifter 20, the processing pallet 10 is cleaned, and the processing pallet 10 is moved to a position in the storage rack 2 where the material to be processed is set, and the next material is loaded. When the empty processing pallet 10 is moved from the processing pallet storage section 6 of the storage rack 2 onto the lifter 20, a sensor (not shown) detects that the processing pallet 10 has entered the traverser 30. This detection sensor is provided at the rear end of the traverser 30. As shown in FIG. 3, the cleaning unit 50 is lowered upon detection by the sensor. The cleaning unit 50 is lowered at a timing that does not interfere with the pillow member 12 and the clamp 13. As shown in FIG. 4 and FIG. 5, the skid 15 in the processing pallet 10 is inserted between a pair of cleaning blades 54, 54 in the group of multiple pieces, and as shown in FIG. 8(a), the cleaning blade 54 rotates while contacting both side surfaces 15b, 15b of the skid 15. The multiple blades 54b of the rotating cleaning blade 54 scrape off and remove the molten material 17 attached to the skid 15. Furthermore, a sensor (not shown) is provided at the front end of the traverser 30, and the cleaning unit 50 is raised at the timing detected by the sensor. Therefore, when performing cleaning work, interference between the pillow member 12 and the clamp 13 can be reliably avoided. The cleaning unit 50 is provided with cleaning blades corresponding to the number of skids 15 of the processing pallet 10, and all the skids 15 can be reliably cleaned by moving the processing pallet 10 by the path K while the cleaning unit 50 is in contact with the skids 15 of the processing pallet 10. The cleaning effect is improved by moving the path K back and forth or multiple times.

To explain the removal operation of the cleaning blade 54 in detail, first, as shown by arrow A in Fig. 8(a), the multiple blades 54b of the rotating cleaning blade 54 knock down the molten material 17 adhering to the skid 15 from above. Next, as shown by arrow B in Fig. 7, the molten material 17 enters between the multiple blades 54b of the cleaning blade 54 and is twisted off. Next, as shown by arrow C in Fig. 8(a), the multiple blades 54b of the rotating cleaning blade 54 knock up the molten material 17 that has passed by, and the molten material 17 adhering to the skid 15 is scraped out and removed. This makes it possible to easily and reliably remove and clean the adhering material 17 that is strongly adhered to the support part 15a and side surface 15b of the skid 15 after laser processing. The cleaning blade 54 rotates due to contact resistance between the side surface 15b of the skid 15 and the side surfaces of the multiple blades 54b of the cleaning blade 54 as the skid 15 moves in the direction of arrow D shown in Figure 8 (a), so the cleaning blade 54 rotates in the directions of arrows A and C without a rotation drive mechanism. Note that a separate drive mechanism for rotating the blade may be provided to rotate it in the directions of arrows A and C or in the opposite direction to the directions of arrows A and C.

The skid 15 in the processing pallet 10 is attached in a curved state in the left-right direction X. However, as shown by arrow D in FIG. 7, the cleaning blades 54, which are divided into groups, all move to follow the curved skid 15 in the processing pallet 10 against the biasing force of the compression coil spring 59. This makes it possible to easily and reliably remove the molten material 17 adhering to the curved skid 15, and when the next plate material is laser processed, a high-quality product can be produced because no part of the plate material is supported in a raised position.

Furthermore, as shown in FIG. 8(b), the cleaning blade 54 may be subjected to a strong load during cleaning operation due to the welded scrap 18 strongly attached to the support portion 15a of the skid 15 or excessive deformation of the skid 15. In this case, as shown in FIG. 8(b), the cleaning unit 50 swings upward and retreats by the hinge 52 against the biasing force of the tension coil spring 55, so that the destruction of the cleaning blade 54 and the deformation of the skid 15 due to the excessive load can be prevented. Also, as shown in FIG. 8(b), the scrap 18 enters between the multiple blades 54b of the cleaning blade 54 and is twisted off, so that the scrap 18 strongly attached to the support portion 15a of the skid 15 can be easily and reliably removed and cleaned.

Furthermore, since it is important for the cleaning blade 54 to rotate by contact with the skid 15 in the removal operation of the deposits, as shown in Figures 5 and 6, a cylindrical collar 57 rotates freely through a support shaft 53 fixed between both side plates 51b, 51b of the mounting bracket 51. Furthermore, the cleaning blade 54 passing through the small diameter portion 57a of the cylindrical collar 57 also rotates freely with respect to the small diameter portion 57a of the cylindrical collar 57. In this way, by configuring the rotating body that rotates freely with respect to one support shaft 53 to have two or more layers, the rotatability of the cleaning blade 54 can be improved. In other words, between the multiple cleaning blades 54 divided into groups, some clearance is provided through the annular plate-shaped collar 58 to improve the insertion and descent into the skid 15. As a result, if the cleaning blade 54 becomes inclined during rotation, in the case of a structure in which the cleaning blade 54 rotates directly on the support shaft 53, the support shaft 53 and the center hole 54a of the cleaning blade 54 will be caught, and the blade will not rotate and cleaning will not be possible. However, in the case of the cylindrical collar 57 and cleaning blade 54 that are two-layered on the support shaft 53, even if the cleaning blade 54 becomes slanted due to the adverse effect of clearance, it is the central hole 54a of the cleaning blade 54 and the cylindrical collar 57 that cause scuffing. As a result, even during scuffing or high friction, the cylindrical collar 57 rotates relative to the support shaft 53, and the cleaning blade 54 also rotates following the cylindrical collar 57, so that adhesions can be removed reliably.

In this way, the cleaning blade 54 of the cleaning unit 50 inserted into the side surface 15b of the skid 15 can reliably remove the deposits 17 that cannot be removed with a conventional brush. In addition, the cleaning unit 50 moves to follow the curvature of the skid 15, improving the removal function. Furthermore, the cleaning blade 54 of the cleaning unit 50 moves onto the skid 15 in the event of an overload, preventing damage to the skid 15 and the cleaning unit 50. Furthermore, the cleaning blade 54 rotates even if a load due to friction or scraping between parts occurs. This improves the rotational ability of the cleaning blade 54, allowing the deposits 17 attached to the skid 15 to be reliably removed and cleaned.

Although the present embodiment has been described above, the present embodiment is not limited to these, and various modifications are possible within the scope of the gist of the present embodiment.

That is, according to the above embodiment, the adhering matter is removed when the empty machining pallet is pulled into the lifter from the machining pallet storage section of the storage rack, but the adhering matter may be removed when the empty machining pallet is sent out from the lifter to the machining pallet storage section.

In addition, according to the above embodiment, a support shaft is fixed between both side plates of the mounting bracket, and the cleaning blade is rotated on this support shaft, but a support shaft may be rotatably supported on both side plates of the mounting bracket, and the cleaning blade may be rotated on this support shaft.

In addition, in the above embodiment, only the cleaning blade moves to follow the curvature of the skid, but the entire cleaning unit may be slid to follow the curvature of the skid. In this case, a long hole is formed in the mounting bracket of the cleaning unit as a groove for a slider, and the cleaning unit is slid, or the cleaning unit is attached to a linear guide block to move linearly.

Furthermore, according to the above embodiment, the skid is cleaned when an empty processing pallet is taken in and out of the processing pallet storage section of the storage rack, but the cleaning unit itself may move along a path in the processing pallet storage section of the storage rack to remove the skid.

REFERENCE SIGNS LIST 1 Plate material loading/unloading device 2 Storage rack 6 Processing pallet storage section 10 Processing pallet 15 Skid 15a Support section 15b, 15b Both side surfaces 17 Molten material (adherent material)
18 Welding scrap (attachment)
20 Lifter 30 Traverser 40 Lifting frame 50 Cleaning unit 51 Mounting bracket 51b, 51b Side plates 52 Hinge 53 Support shaft 54 Cleaning blade (cleaning member)
54a: central hole 54b: blade 55: tension coil spring (elastic member)
57 Cylindrical collar 57a Small diameter portion 58 Annular plate collar 59 Compression coil spring (elastic member)
X: Left/right direction of the processing pallet (direction intersecting with the moving direction)
Y: Front-back direction of the processing pallet (movement direction)
K Processing pallet movement path

Claims (6)

A storage rack is provided near the laser processing machine and has a processing pallet storage section;
A processing pallet that has a plurality of skids that support plate materials with a number of support portions having sharp tips and is stored in the processing pallet storage unit;
a traverser that is movable in a direction approaching and receding from the storage rack, is capable of holding the processing pallet, and moves the processing pallet in and out of a lifter to carry the processing pallet in and out;
and a plurality of cleaning members that contact both side surfaces of all the skids of the empty processing pallet and rotate to remove deposits attached to the skids when the empty processing pallet is pulled in from the processing pallet storage section by the traverser or when the empty processing pallet is sent out to the processing pallet storage section,
The plurality of cleaning members are composed of a plurality of cleaning blades,
The plate material carrying-in/out device has a plurality of cleaning blades that extend radially from a central hole to scrape off the deposits. A storage rack is provided near the laser processing machine and has a processing pallet storage section;
A processing pallet that has a plurality of skids that support plate materials with a number of support portions having sharp tips and is stored in the processing pallet storage unit;
a traverser that is movable in a direction approaching and receding from the storage rack, is capable of holding the processing pallet, and moves the processing pallet in and out of a lifter to carry the processing pallet in and out;
and a plurality of cleaning members that rotate by contact resistance with both sides of all of the skids of the empty processing pallet to remove deposits attached to the skids when the empty processing pallet is pulled in from the processing pallet storage section by the traverser or when the empty processing pallet is sent out to the processing pallet storage section,
The cleaning members are each a cleaning blade. The storage rack includes a lifting frame that is capable of being raised and lowered,
A plurality of cleaning units are attached to the lift frame,
The cleaning unit includes:
a mounting bracket attached to the lift frame via a hinge;
A support shaft fixed between both side plates of the mounting bracket;
the cleaning blades being rotatably supported on the support shaft in groups of a plurality of blades at intervals;
an elastic member interposed between the mounting bracket and the lifting frame and biasing the mounting bracket toward the lifting frame;
The plate material carrying-in/out device according to claim 1 or 2, further comprising: The plate material loading/unloading device according to claim 3, wherein the cleaning blades are rotatably supported on a cylindrical collar that rotates about the support shaft, and the cleaning blades are separated into groups of multiple blades at intervals and partitioned by annular plate-shaped collars. 5. The plate material transport device according to claim 4, wherein an elastic member is interposed on the support shaft between the cylindrical collar located at one end side of the group of multiple cleaning blades and one side plate of the mounting bracket. the cylindrical collar is rotatably supported on the support shaft, and the cleaning blade is rotatably supported on a small diameter portion of the cylindrical collar,
5. The plate material carrying-in/out device according to claim 4, further comprising at least two layers of rotating bodies which rotate freely about one of said support shafts.

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