Plate loading and unloading device

Abstract

To provide a plate material carrying-in / out device which can reliably remove deposits stuck to a skid in a work pallet.SOLUTION: A plate material carrying-in / out device comprises: a work pallet 10 which has a storage rack 2 and a plurality of skids 15 for supporting a plate material, and is stored in a work pallet storage part 6; a lifter 20 which is so provided on one side of the storage rack 2 as to be capable of elevating; a traverser 30 which is provided on the lifter 20 so as to be movable in a direction approaching and separating from the storage rack 2, can hold the work pallet 10, and moves the work pallet 10 in and out of the lifter 20; and a plurality of cleaning blades which is so provided as to be capable of elevating with respect to an empty work pallet 10 stored in the work pallet storage part 6, and descends when pulling the empty work pallet 10 from the work pallet storage part 6 into the lifter 20, thereby contacting both sides 15b of all skids 15 in the empty work pallet 10 and rotating to remove deposits stuck to the skids 15.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a plate material carrying-in / out device. [Background technology]

[0002] An example of this type of plate material carrying-in / out device is disclosed in Patent Document 1. This plate material carrying-in / out device includes a storage rack erected near the laser processing machine, an elevator provided on one side of the storage rack so as to be able to rise and fall, a traverser for moving the processing table into and out of the elevator, and a brush provided near one side of the storage rack for cleaning the skids. The 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 the empty processing table from the table waiting section into the elevator. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2007-911 A Summary of the Invention [Problem to be solved by the invention]

[0004] 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.

[0005] Therefore, one aspect of the present invention has been made to solve the above-mentioned problems, and is a plate material loading / unloading device that can easily and reliably remove and clean deposits that are firmly attached to multiple skids on a processing pallet. [Means for solving the problem]

[0006] One aspect of the present invention is a storage rack that is installed near a laser processing machine and has a processing pallet storage section, a plurality of skids that support plate materials with a number of supports having sharp tips, a processing pallet stored in the processing pallet storage section, a lifter that is installed on one side of the storage rack and can be raised and lowered, and a lifter that is installed on the lifter and can move in a direction toward and away from the storage rack, and can hold the processing pallet, and the processing pallet is inserted into and removed from the lifter. To A plate material loading / unloading device including a traverser for loading and unloading, and a plurality of cleaning members that are arranged to be raised and lowered relative to the empty processing pallet stored in the processing pallet storage section and that are lowered when the empty processing pallet is pulled into the lifter from the processing pallet storage section or when the empty processing pallet is sent out from the lifter to the processing pallet storage section, thereby contacting both sides of all the skids in the empty processing pallet and rotating to remove the deposits that have adhered to the skids, the plurality of cleaning members being made of a plurality of cleaning blades that contact both sides of all the skids and rotate to remove the deposits. In this embodiment, the deposits enter between the plurality of cleaning blades and are twisted off, so that the deposits that are strongly adhered to the support parts of the skids are easily and reliably removed and cleaned. Effect of the Invention

[0007] According to one aspect of the present invention, deposits firmly attached to a plurality of skids in a processing pallet can be easily and reliably removed and cleaned. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing an example of a plate material carry-in / out device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view of a cleaning unit group of the plate material carry-in / out apparatus. [Diagram 3] FIG. 3 is a side view, partly in section, of the cleaning unit prior to its lowering onto the skid of the processing pallet. [Figure 4]FIG. 4 is a side view, partly in section, of the cleaning unit lowered onto the skid of the processing pallet. [Diagram 5] FIG. 5 is a front view showing the cleaning unit lowered onto the skid of the processing pallet. [Figure 6] FIG. 6 is an enlarged side view of the cleaning blade of the cleaning unit. [Figure 7] FIG. 7 is a front view showing a state in which the cleaning blade group of the cleaning unit moves following the curved skid. [Figure 8] 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 that is firmly welded to the support portion of the skid. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a plate material carrying-in / out device according to an embodiment of the present invention will be described in detail with reference to the drawings.

[0010] FIG. 1 is a perspective view showing an example of a workpiece loading / unloading device according to an embodiment of the present invention. FIG. 2 is a perspective view of a cleaning unit group of the workpiece loading / unloading device. FIG. 3 is a side view, partly in section, showing a state before the cleaning unit is lowered onto the skid of the processing pallet. FIG. 4 is a side view, partly in section, showing a state after the cleaning unit has been lowered onto the skid of the processing pallet. FIG. 5 is a front view showing a state after the cleaning unit has been lowered onto the skid of the processing pallet. FIG. 6 is an enlarged side view of a cleaning blade of the cleaning unit. FIG. 7 is a front view showing a state after the cleaning blade group of the cleaning unit has moved following the curved skid. FIG. 8(a) is a side view, partly in section, showing a cleaning state of the cleaning unit. FIG. 8(b) is a side view, partly in section, showing a state after the cleaning blade has come into contact with 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.

[0011] As shown in FIG. 1, the plate material loading / unloading device 1 of this embodiment is a device that uses a processing pallet 10 stored in a processing pallet storage section 6 of a storage rack 2 to load iron plate materials (both not shown) into a laser processing machine and unload processed plate materials.

[0012] More specifically, the plate material loading / unloading device 1 according to this embodiment is provided in an upright position near the laser processing machine, and includes a storage rack 2 having a processed pallet storage section 6, a plurality of skids 15 for supporting plate materials with a number of supports 15a having sharp tips, a processed pallet 10 stored in the processed pallet storage section 6, and a lifter 20 that is movable in directions toward and away from the storage rack 2 and is capable of holding the processed pallet 10, and the processed pallet 10 is inserted into and removed from the lifter 20 to move the processed pallet 10. 10 The device is equipped with a traverser 30 for carrying in and out, and a plurality of cleaning members 54 which rotate and come into contact with both side surfaces 15b, 15b of all the skids 15 on the empty processing pallet 10 to remove deposits 17 adhering to the skids 15 when the traverser 30 is used to pull in an empty processing pallet 10 from the processing pallet storage section 6 or when the empty processing pallet 10 is sent to the processing pallet storage section 6, the plurality of cleaning members being made up of a plurality of cleaning blades. The specific configuration of the plate material carrying-in and carrying-out device 1 will be described below.

[0013] 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 attached to the skid 15. In other words, the plate material loading / unloading device 1 removes deposits attached to the skid 15 by using the plurality of cleaning units 50 that move up and down on the processing pallet 10 when moving 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, when pulling an empty processing pallet 10 on which no plate material to be processed or no processed plate material is placed from the processing pallet storage section 6 of the storage rack 2 into the lifter 20.

[0014] The storage rack 2 is erected near the laser processing machine and is composed of four support columns 3 extending in the vertical direction, four short members 4 suspended between two support columns 3, 3 located on both the left and right sides, and four long members 5 suspended between two support columns 3, 3 located on both the front and rear sides. The number and size of the support columns 3 and each member 4, 5 vary depending on the specifications of the storage rack 2. The storage rack 2 has a processing pallet storage section 6 in the middle section for storing 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. The processing pallet storage section 6 is publicly known, for example, as shown in JP-A-2001-97505, and therefore a detailed configuration of the processing pallet storage section 6 is omitted.

[0015] As shown in Fig. 1 and Fig. 5, the processing pallet 10 has a frame-shaped pallet base 11, and a plurality of bolster members 12 long in the left-right direction X are provided on the pallet base 11 at appropriate intervals in the front-rear direction Y. A plurality of skids 15 long in the front-rear direction Y are provided on the plurality of bolster members 12 at equal intervals in the left-right direction X. Each skid 15 has a plurality of (saw-blade-shaped) support parts 15a with sharp tips on the upper part, and the underside of the plate material is supported by the plurality of support parts 15a at lines or points. The processing pallet 10 is stored in the processing pallet storage section 6 of the storage rack 2.

[0016] Then, when a plate material is placed horizontally on the skid 15 of the processing pallet 10 and the processing pallet 10 is carried into a laser processing machine for laser processing, the molten material such as dross is blown downward by the assist gas ejected from a nozzle provided 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 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-rear 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 from the skid 15 before they accumulate in large quantities, part of the next plate may be supported in a raised position, so the deposits that have accumulated on the skid 15 are removed using the cleaning unit 50 described below.

[0017] As shown in FIG. 1, the lifter 20 is provided in front of the storage rack 2 so as to be able to rise and fall, and is raised and lowered by a lifter motor (not shown) provided on the upper part of the storage rack 2. The lifter 20 is provided with a traverser 30 for moving the processing pallet 10 in and out of the lifter 20 so as to be movable in the front-rear direction Y toward and away from the storage rack 2. The traverser 30 moves in the front-rear direction Y by a self-propelled motor (not shown) and can hold the processing pallet 10. The processing pallet 10 is moved in and out of the lifter 20 to carry in and out 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 will be omitted.

[0018] 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 a path K, which is the range in which the processing pallet 10 moves, from within the storage rack 2. More specifically, as shown in Figs. 1 and 2, the lifting frame 40 is adapted to move up and down by pneumatic cylinders (actuators) 42 provided on two support columns 3, 3 located on both sides in the 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.

[0019] As shown in Figs. 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 the clamp 13 or a mechanism for avoiding interference with the clamp 13 (for example, avoiding interference up and down), the cleaning units 50 may be disposed on the same line.

[0020] 2 and 3, the mounting bracket 51 is formed in a U-shape in plan view by 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 includes a movable bracket 52b that is fixed to the back plate 51a of the mounting bracket 51 with a bolt 56A and 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.

[0021] 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 side of the lifting frame 40. The 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 to retreat 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.

[0022] 5 and 7, both ends of a support shaft 53 are fastened and fixed to both side plates 51b, 51b of the mounting bracket 51 via bolts 56B. A cleaning blade (cleaning member) 54 arranged at intervals in groups of a plurality of blades is rotatably supported on the support shaft 53 via a cylindrical collar 57. In detail, as shown in FIG. 6, the cleaning blade 54 is formed by cutting a circular iron plate, etc., to have a plurality of blades 54b that extend radially from a circular center hole 54a and scrape off deposits. The plurality of blades 54b come into contact with both side surfaces 15b of all the skids 15 in the empty processing pallet 10 and rotate, so that deposits such as molten material and welded material that are attached to the skids 15 (including 15a and 15b) are scraped off and removed.

[0023] 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 at least 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 in 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 ridges of the skid 15. If adhesions accumulate in the valleys of the skid 15, the adhesions affect the laser processing and the processing quality decreases, 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 ridges of the skid 15. Furthermore, the position to which the cleaning blade 54 descends is set to a position where the skid 15 enters the vicinity of the root 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 set to 18, this number may be increased or decreased as appropriate. If the number is reduced, the gap between the blades 54b becomes wider, and deposits become more likely to enter between them. As shown in Figs. 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 a medium diameter portion 57b and a large diameter portion 57c of the cylindrical collar 57 at intervals, and are also partitioned by a circular plate-shaped collar 58.

[0024] 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 attached matter when the skid 15 is curved or deformed, or when a large amount of attached matter has 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 the attached matter from both side surfaces 15b, 15b of the skid 15, it is desirable that the width of the collar 58 is close to the thickness of the skid 15. In addition, reference numeral 17 in FIG. 8(a) indicates the molten matter (attached matter), and reference numeral 18 in FIG. 8(b) indicates the welded scrap (attached matter).

[0025] 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 a group of multiple blades and one side plate 51b of the mounting bracket 51. The 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 a load is prevented from being applied to the cleaning unit 50. In addition, in FIG. 5, the compression coil spring 59 is disposed on the left side, but if the curvature of the skid 15 is reversed, it is preferable to attach the compression coil spring 59 on the right side. Then, 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 a group of multiple blades moves in the direction of the arrow D against the urging force of the compression coil spring 59 so as to follow the curved skid 15.

[0026] According to the plate material loading / unloading device 1 of the above embodiment, the processing pallet 10 of the product that has been processed is carried out from the laser processing machine to the storage rack 2, and the product on the processing pallet 10 is removed to leave the processing pallet 10 empty. 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 the cleaning work, interference between the pillow member 12 and the clamp 13 can be reliably avoided. The cleaning unit 50 has cleaning blades corresponding to the number of skids 15 of the processing pallet 10, and by moving the processing pallet 10 by the path K while the cleaning unit 50 is in contact with the skid 15 of the processing pallet 10, all the skids 15 can be reliably cleaned. The cleaning effect is improved by going back and forth along the path K or by going back and forth multiple times.

[0027] The removal operation of the cleaning blade 54 will be described in detail below. 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, so that 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 portion 15a and side surface 15b of the skid 15 after the laser processing. 8(a) 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, the cleaning blade 54 rotates in the directions of the 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 the arrows A and C or in the opposite directions to the directions of the arrows A and C.

[0028] In addition, 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 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 since the next plate material is not supported in a bulging manner when it is laser processed, a high-quality product can be produced.

[0029] Furthermore, as shown in FIG. 8(b), a strong load may be applied to the cleaning blade 54 during the cleaning operation due to the welded scrap 18 strongly adhered 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 damage to the cleaning blade 54 and deformation of the skid 15 due to an 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 adhered to the support portion 15a of the skid 15 can be easily and reliably removed and cleaned.

[0030] Furthermore, since it is important for the cleaning blade 54 to rotate by contact with the skid 15 in the operation of removing the deposits, as shown in Figs. 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, a certain amount of clearance is provided between the multiple cleaning blades 54 divided into groups via a circular plate-shaped collar 58 in order to improve the insertion and descent onto 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 central hole 54a of the cleaning blade 54 will be caught, and the cleaning blade will not rotate and will not be able to clean. However, in the case of the cylindrical collar 57 and cleaning blade 54 that are arranged in two layers on the support shaft 53, even if the cleaning blade 54 becomes slanted due to the adverse effect of clearance, galling occurs at the center hole 54a of the cleaning blade 54 and the cylindrical collar 57. As a result, even during galling 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 reliably removed.

[0031] 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 by a conventional brush. In addition, the cleaning unit 50 moves following 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 when overloaded, 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 galling between parts occurs. This improves the rotatability of the cleaning blade 54, and the deposits 17 attached to the skid 15 can be reliably removed and cleaned.

[0032] Although the present embodiment has been described above, the present embodiment is not limited to this, and various modifications are possible within the scope of the gist of the present embodiment.

[0033] In other words, according to the above embodiment, the lifter is adapted to remove any attached material when pulling an empty machining pallet into the machining pallet storage section of the storage rack, but the lifter may also be adapted to remove any attached material when sending the empty machining pallet out from the lifter into the machining pallet storage section.

[0034] 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 it is also possible to rotatably support a support shaft on both side plates of the mounting bracket and rotate the cleaning blade on this support shaft.

[0035] Furthermore, in the above embodiment, only the cleaning blade moves to follow the curvature of the skid, but the 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 to move, or the cleaning unit is attached to a linear guide block to move linearly.

[0036] Furthermore, according to the above embodiment, any adhering material on the skid is removed when an empty processing pallet is taken in or 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 any adhering material on the skid. [Explanation of symbols]

[0037] 1 Board loading / unloading device 2 Storage Rack 6 Processing pallet storage area 10 Processing Pallet 15 Skid 15a Support part 15b,15b both sides 17 Molten matter (adhesion) 18 Welding scrap (adhesion) 20 Lifter 30 Traversa 40 Lifting Frame 50 Cleaning Unit 51 Mounting bracket 51b,51b both side plates 52 Hinge 53 Support shaft 54 Cleaning blade (cleaning material) 54a center hole 54b Blade 55 Tension coil spring (elastic member) 57 Cylindrical Collar 57a Small diameter section 58 Circular 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

1. 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.

2. 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.

3. 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:

4. The plate material transport 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. 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.

6. 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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