JP2004075398A - Automated sheet material supplying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automated sheet material supplying device that can suck, separate, and convey sheet materials assuredly by selecting a suck position and/or the number of suck sheets based on a size or the like of a sheet material. <P>SOLUTION: This automated sheet material supplying device for supplying sheet materials stacked on a stacking stand one by one includes a sheet material measuring means for measuring at least a vertical size, a lateral size or a thickness of the sheet materials with different sizes and selects how to suck the sheet materials based on the measuring result by the sheet materia measuring means. <P>COPYRIGHT: (C)2004,JPO

Description

The present invention relates to an automatic sheet material feeding device, and more particularly, to an automatic sheet material feeding device for automatically separating and automatically feeding sheet materials stacked on a mounting table one by one.

Conventionally, there has been known a sheet material automatic feeding apparatus which automatically separates sheet materials stacked on a mounting table one by one and feeds the sheets one by one, and the following prior arts are known.

1) Automatically feeds sheet materials of different sizes loaded on a mounting table and automatically supplies the same suction position of the sheet material and the same suction number of suction cups regardless of the size of the sheet material. Are known. Also, 2) an automatic sheet material feeding apparatus for automatically feeding a sheet material by loading the sheet material on a mounting table, wherein vacuum suction by a suction cup is carried without separation even if the sheet materials are overlapped and sucked. . Also, 3) an automatic sheet material feeding apparatus for automatically feeding sheet materials of different sizes loaded on a mounting table, and no abnormality detection such as a sheet material suction error based on the measurement of the sheet materials is known. 4) An automatic sheet material feeding device that automatically loads sheet materials of different sizes on a mounting table and displays a warning, an operation stop, and the like when detecting a suction error based on a sheet material measurement result. What to do is not known. Further, 5) suction of the sheet material is performed by sucking the sheet material without removing it even if there is dust on the surface of the sheet material.

However, the above-mentioned prior arts 1) to 5) have the following problems, respectively.

Regarding (1), if the suction position and the suction number of the sheet material are the same irrespective of the size of the sheet material, insufficient suction, deformation due to suction, dropping from the suction cup during conveyance, and the like are likely to occur. If the PS plate is strongly adsorbed in some cases, in the case of the PS plate, unevenness in development occurs due to the adsorption pressure. In the case of 2), an automatic sheet feeding apparatus for automatically feeding sheet materials of different sizes loaded on a mounting table, and in a case where the sheet materials are conveyed while being overlapped, for example, an automatic developing machine And there is a problem in developing the sheet material in the automatic developing machine. In the case of 3), a jam may occur during conveyance of the sheet material unless an error such as a separation failure after the adsorption of the sheet material is detected. In the case of 4), an automatic sheet material feeding apparatus that automatically loads sheet materials of different sizes on a mounting table and detects errors due to sheet material suction based on measurement results of the size of the sheet materials. Even if it occurs, it is inconvenient for the operator to understand. Further, in the case of 5), when dust or the like is present on the surface of the stacked sheet material or the surface of the suction cup, there is a problem that the suction failure of the suction cup or the adsorption becomes unstable.

An object of the present invention has been made in view of the above-mentioned problems, and a first invention is an automatic sheet material feeding apparatus which can reliably select a suction position and a suction number according to the size of a sheet material and the like, and can surely suction, separate, and convey the sheet material. Is to provide. Another object of the present invention is to provide an automatic sheet material feeding apparatus that automatically separates sheet materials even if the sheet materials overlap and are adsorbed. A third aspect of the present invention is to provide an automatic sheet material feeding apparatus capable of automatically detecting a mistake or the like after suction of a sheet material. A fourth aspect of the present invention is to provide an automatic sheet material feeding apparatus capable of automatically detecting errors such as suction, separation, and conveyance of a sheet material, displaying a warning, and stopping operation. Still another object of the present invention is to provide an automatic sheet material feeding apparatus that can reliably absorb a sheet material.

目的 The object of the first invention can be achieved by the following means. That is, (1) In a sheet material automatic feeding device for automatically feeding sheet materials stacked on a mounting table one by one, at least one of a vertical size, a horizontal size, and a thickness of the sheet materials having different sizes is measured. A sheet material automatic feeding device, wherein a sheet material measuring means and a method of adsorbing the sheet material are selected based on a measurement result of the sheet material measuring means.

目的 The object of the second invention can be achieved by the following means. That is, (2) in the sheet material automatic feeding device that automatically supplies the sheet materials stacked on the mounting table one by one, when the sheet materials stacked on the mounting table are sucked, a plurality of the sheet materials are sucked. In this case, the sheet material is separated by performing at least one of vibration of the sheet material, impact on the sheet material, and air blowing on a side surface of the sheet material.

目的 The object of the third invention can be achieved by the following means. That is, (3) in a sheet material automatic feeding device for automatically feeding sheet materials stacked on a mounting table one by one, at least one of the vertical size, the horizontal size, and the thickness of the sheet materials having different sizes is determined. A sheet material measuring means for measuring before the sheet material is adsorbed, and detecting a sheet material suction error based on a result of the sheet material measuring means.

目的 The object of the fourth invention can be achieved by the following means. That is, (4) at least one of the vertical size, the horizontal size, and the thickness of the sheet materials having different sizes is measured in the automatic sheet material feeding device that automatically feeds the sheet materials stacked on the mounting table one by one. A sheet material automatic feeding device, wherein at least one of a display, a warning, and an operation stop is performed when a suction error is detected based on a measurement result of the sheet material measuring means and the sheet material measuring means.

目的 The object of the fifth invention can be achieved by the following means. That is, (5) a suction member that sucks the surface of the sheet material after blowing air onto the surface of the sheet material, an air generation unit that supplies air to the suction member, and a vacuum generation unit that vacuums the suction member And a sheet material automatic feeding device.

の The configuration described above has the following effects. According to the first aspect of the present invention, the suction method is selected according to the size of the sheet material and the like, so that the suction is ensured. For example, there is provided an automatic sheet material feeding apparatus that can select the suction position and / or the number of suction and reliably suction. Now you can.

According to the second aspect of the present invention, even if the sheets are overlapped and adsorbed, the sheets can be reliably separated automatically by vibration of the sheets, impact on the sheets, air blowing of the sheets, and the like. An automatic material supply device can be provided. According to the third aspect of the invention, it is possible to provide a sheet material automatic feeding device capable of automatically detecting a mistake when there is a mistake such as a sheet material being overlapped and sucked after the sheet material is sucked. According to the fourth aspect of the present invention, an error in sheet material adsorption, separation, and the like can be automatically detected, a warning display can be given, and operation can be stopped. Became. According to the fifth aspect of the present invention, it is possible to provide a sheet material automatic feeding device that reliably absorbs the sheet material by removing dust and the like on the surface of the sheet material.

An embodiment of the present invention will be described with reference to the drawings.

(Embodiment 1)
1 is a configuration diagram of an automatic sheet material feeding apparatus, FIG. 2 is a configuration diagram of a sheet material measurement unit, FIG. 3 is an explanatory diagram of a sucker suction position of a sheet material, and FIG. 5, FIG. 5 is a configuration diagram showing the upper surface of FIG. 4, and FIG. 6 is a configuration diagram showing separation when the sheet material is adsorbed.

First, in FIG. 1, the sheet material automatic feeding device is roughly divided into a mounting table 20 on which the sheet material is loaded, and a device main body 11 which sucks and separates the sheet material and transports the sheet material. The sheet material S is sucked, separated, conveyed, and sent to the automatic developing machine 95 which is the next process. The sheet material measuring means 30, the suction unit 40, and the like will be described later.

In FIG. 2, the sheet material measuring means 30 will be described. FIG. 2A is a configuration diagram of the sheet material measuring means, and FIG. 2B is an enlarged view of a main part of the sheet material measuring means of FIG. 2A. The mounting table 20 has a mounting surface 21 on which the sheet material S leans. The mounting table is provided with an X-axis reference position 23 below the mounting surface 21 and a Y-axis reference position 22 on the mounting surface 21 on the left side in FIG.

Here, the operation of the sheet material measuring means in the Y-axis direction will be described first. A rail 36 is fixed to the mounting table 20, and a distance measuring linear motor 35 operates along the rail 36. The distance measuring linear motor 35 measures the distance from the X-axis reference position 23. The distance measuring linear motor 35 has an arm 34, a cylinder 33 is fixed to the arm 34, and a reflection sensor 32 and a rotatable roller 31 are provided on a shaft 37 of the cylinder 33. The roller 31 moves in contact with the surface of the sheet material. The reflection sensor 32 has an incident angle θ of 65 degrees to 80 degrees when an angle formed between a vertical line on the surface of the sheet material S and the measurement light beam is an incident angle. The reflection sensor 32 measures the surface state of the sheet material, detects the end surface (side end) of the sheet material based on whether the irregularly reflected light is at or above a predetermined intensity, and measures the length of the sheet material S from the amount of movement of the roller 31. Calculated. The sheet material measuring means operating in the X-axis direction is the same as that in the Y-axis direction, and therefore the description is omitted.

シ ー ト The sheet material of the embodiment is a PS plate. The PS plate has a minimum width of 400 mm, a maximum width of 900 mm, a minimum length of 500 mm, and a maximum length of 1230 mm. Further, the distance measuring linear motor 35 returns to the initial position above the sheet material placed on the placing table after the operation, so that the loading of the sheet material is not hindered. Further, the distance measuring linear motor 35 measures the end face to the position of the minimum size of the sheet material, and if no end face is found, returns to the initial position and displays a warning.

Next, referring to FIG. 3, the suction position of the suction cup due to the difference in the size of the sheet material will be described. The sheet material S is divided into two blocks by a boundary line L according to the vertical size of the sheet material S measured in FIG. In FIG. 3, sheet materials S1 and S2 smaller than the boundary line L and large sheet materials S3 and S4 are divided. When the vertical dimension of the sheet material is equal to or larger than the boundary line L, the suction positions of the suction cups are four places of 42A, 42B, 42C, and 42D in FIG. 3, and the vertical dimension of the sheet material is equal to or smaller than the boundary line L. In this case, the suction positions of the suction cups are determined at four vertical suction positions 43A, 43B, 43C and 43D (not shown) in FIG. Next, in the measurement in the X-axis direction, in the case of FIG. 3, in the case of FIG. 3, the suction position is set to 43A, 43B, 43C in the sheet material S1, and the suction cup of 43D is selected and determined not to perform the suction operation. In the case of the sheet material S3, the suction cups 42A to 42D perform the suction operation. In the embodiment, the suction position is L1 = 380 mm and L2 = 720 mm from the X-axis reference position 23. The boundary line L is 550 mm. This enables optimal adsorption for each size. Although the movement of the roller has been described as moving downward from the upper side in the Y-axis direction, when the load amount of the same size sheet material is large, a roller diameter larger than this thickness is necessary. The roller diameter can be reduced by adopting the method of moving the roller upward.

4 and 5, the suction, separation, and conveyance of the sheet material will be described. When the motor 48 rotates, the shaft 49 supported by the bearing 51 rotates. Then, the gear 50 integral with the shaft 49 rotates, and the meshing gear 53 rotates. The arm 47 integrated with the gear 53 rotates, and the motor 44 provided on the arm 47 rotates the arm 44. The suction cup 41 is rotatable around a shaft 45 of the arm 44. When the sheet material S is large as shown in the figure, the sheet material is adsorbed as shown by the solid line in the figure. As shown in FIG. 5, the suction cup 41 is provided with four suction cups 41A, 41B, 41C and 41D. As described above with reference to FIG. 3, it is selectively operated. The selected suction cups 41A to 41D are evacuated by the vacuum device 87, the suction cups suck the sheet material, and the suction cups suck and separate the sheet material S by the rotation of the motor 46. Here, when the motor 54 rotates, the worm 55 supported by the bearing 56 rotates, and the base 52 moves. The sheet material S is conveyed by this movement. Thereafter, the motor 46 is rotated so that the leading end of the sheet material is conveyed to the roller 66 side as shown by a two-dot chain line in the figure. Further, the sheet material S is conveyed to the automatic developing machine 95 by the rollers 66 at a speed synchronous with or slightly lower than the conveying speed of the automatic developing machine 95, and thereafter, is sent by the drive source roller 96 of the automatic developing machine 95. Then, the presence or absence of the sheet material is detected by the transmission type sensor 26 below the mounting table 20, and if there is at least one sheet material, plate size measurement for processing the next sheet material S is started, and To the mounting table direction. When the transmission sensor 26 detects that there is no sheet material, a warning is issued to the display unit 82 that there is no sheet material to be processed. The instruction to start the sheet processing is issued by pressing the operation start button 81 of the operation panel 80.

In FIG. 6, a means for reliably separating only one sheet material from the mounting table will be described.
FIG. 6A is a diagram showing a separation structure when a sheet material is adsorbed, and FIG. 6B is an enlarged view of a main part. In the figure, a motor 46 is provided at a tip of an arm 47, an arm 44 is provided on a shaft of the motor 46, and a suction cup 41 is provided on the arm 44 via a shaft 45. The suction cup 41 adsorbs the sheet material S. When the motor 46 repeats the forward and reverse rotation, the sheet material S vibrates. By shifting the phase with the vibration of the other suction cups, the sheet material is squeezed to separate the sheet material layered below. Further, the nozzle 61 is integrated with the suction cup 41A closest to the X-axis reference, and blows air in the direction of the arrow 62 to the side end of the sheet material S to separate the overlapped sheet material S. Note that the separated sheet material naturally returns to the original mounting table. In addition, vibration may be applied by a method (not shown) parallel to the suction surface of the suction cup, or only air separation may be performed. Further, depending on the size and thickness of the sheet material, the phase between the suction cups and the strength of the ironing may be changed by applying vibration.

Here, the operation will be described with reference to FIGS. 1 to 6. (1) A plurality of sheet materials having different sizes are stacked on the mounting table 20. In the case of a PS plate, it is placed with the photosensitive surface facing down to avoid light fog. Here, when the operation start button 81 is operated, first, the presence or absence of the sheet material is detected by the transmission type sensor 26, and if there is no sheet material on the mounting table 20, the operation is stopped, and if there is, the processing of the next sheet material is performed. (2) Distance measurement The linear motor 35 moves, and the roller 31 moves in the Y-axis and X-axis directions while being in contact with the surface of the sheet material. The reflection sensor 32 detects the end surface of the sheet material and measures the size of the sheet material. I do. It is determined whether the vertical dimension is above or below the boundary line L based on the measured value in the Y-axis direction. (3) In the case of a large sheet material S, the suction cup 41 moves at the positions 42A to 42D in FIG. 3 and selects the positions 42A to 42D to perform the suction operation based on the measured values in the X-axis direction. When the sheet material is small, the sheet material is sucked at the positions 43A, 43B, 43C, and 43D. (4) The sheet material is ironed at the time of suction, and even when two or more sheet materials overlap, the arm 44 is vibrated by the forward / reverse rotation of the motor 46, and at the same time, air is supplied to the space between the sheet material and the nozzle by the nozzle 61. Spray to separate the overlapping sheets. In addition, the laminated sheet material may be separated and overlapped with the lower sheet material due to static electricity, dirt, or the like. (5) The leading end of the sheet material S is conveyed by the rotation of the arm 47, the rotation of the arm 44, and the movement of the base 52. (6) Further, the leading end of the sheet material S is sent by the suction cup 41, conveyed by the roller 66, and sent to the roller 96 of the automatic developing machine 95 in the next step. As described above, the size and the like of sheet materials having different sizes can be detected. Further, the size and the like of the sheet material can be measured with high accuracy at the end face of the sheet material, and the accuracy of the measurement is improved by the above-mentioned incident angle.

(Embodiment 2)
An embodiment in which a new function is added to the first embodiment will be described. FIG. 7 is a configuration diagram of a portion for detecting a separation failure of a sheet material. FIG. 7A is a layout diagram of the detection unit, and FIG. 7B is a diagram illustrating a configuration of the detection unit. The same functional and mechanical parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. 7A and 7B, the detection unit 75 measures the thickness of the sheet material and is installed near the roller 66. A roller 79 is provided at the tip of the measurement arm 77, and pickups PU1 and PU2 are provided. Is the opening angle of the two measurement arms 77. The detection gear 78 is rotated by the motor 76. The detection method is not limited to the above, and for example, a magnetic eddy current method or an ultrasonic method may be used.

動作 The operation when two sheets are overlapped will be described. When the overlapped sheet material S is conveyed and passes through the detection unit 75, the pickups PU1 and PU2 of the two measurement arms 77 are rotated by the rollers 79, respectively, to generate a sine wave whose phase is the pitch of the gears. It should be noted that when the sheet material S is zero, it is pre-assembled so that the phases thereof match. When the sheet material passes, the opening degree θ changes in proportion to the thickness of the sheet material, and the thickness is detected based on the phase difference. Here, the thickness of the sheet material described with reference to FIG. 2 of the first embodiment is stored, and when it is detected that two sheet materials have been fed in comparison with the thickness measured this time, the operation of the apparatus is started. To stop. As described above, when the separation failure of the sheet material occurs, the abnormality can be detected.

(Embodiment 3)
An embodiment in which a new function is added to the first embodiment will be described. FIG. 8 is a configuration diagram showing a covering cover part and its periphery in the automatic sheet material feeding apparatus. The same functional and mechanical parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In FIG. 8, when the cover 72 of the cover unit is actuated by holding the grip portion 73, the cover between the mounting table 20 and the apparatus main body 11 around the shaft 74 can be covered. The operation start button 81 is a button for starting the operation, and the human body is prohibited from entering the area surrounded by the mounting table 20 and the apparatus main body 11. The switch 27 is turned on when the cover 72 is closed and turned off when the cover 72 is opened. The control block 91 processes the signal of the switch 27 to display a warning on the display unit 82 when the cover 72 is not covered, and stops the processing of the sheet material S. In addition, you may make it cover automatically.

The operation will be described here. First, when the user holds and operates the grip 73, the cover 72 operates around the rotation shaft 74 to cover the space between the mounting table and the apparatus main body 11. At the same time, the switch 27 is turned on, and then, when the operation start button 81 is pressed, the operation starts. When the cover 72 is not hung, the switch 27 is turned off, and the operation is not started even if the operation start button 81 is pressed thereafter. As described above, the operator's hands, fingers, arms, etc. are safe without being pinched by the suction cups, arms, etc.

(Embodiment 4)
An embodiment in which functions are added to the first embodiment will be described. FIG. 9 is a configuration diagram of a human body safety device of the automatic sheet material feeding device. The same functional and mechanical parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the figure, the human body P means all of the hands, arms, and the like, and the prohibited range of the human body P is a range surrounded by the mounting table 20 and the apparatus main body 11. The sensors 71 of the space detecting means are provided at a plurality of locations. The sensors 71 include a light emitting section 711 and a light receiving section 712, and the light flux of the light emitting section 711 enters the light receiving section 712. The information from the sensor 71 is processed in the control block 91, and a warning is displayed on the display unit 82 when the information is within the prohibited range. Note that the sensor 71 is preferably provided at an appropriate position on the outer periphery of the prohibited range.

Here, the operation will be described. When the human body P of the operator enters the prohibited range between the mounting table 20 and the apparatus main body 11, the light flux of the light emitting unit 711 does not reach the light receiving unit 712. The operation is temporarily stopped based on the command, and a warning is displayed on the display unit 82 at the same time. When the human body P of the operator comes out of the prohibited range, the light flux of the light emitting unit 711 reaches the light receiving unit 712, and the operation can be restarted. When the sheet material S is separated from the stacking position before separation, the separation is continued. As described above, it is possible to provide a sheet material automatic supply device with high operator safety.

(Embodiment 5)
An embodiment in which functions are added to the first embodiment will be described. 10A and 10B are main part configuration diagrams of the sheet material automatic feeding device. Specifically, FIG. 10A is a diagram illustrating a cleaning state of the suction surface of the suction member of the sheet material, and FIG. The same functional and mechanical parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the drawing, a suction cup 41 of the suction member blows air to the sheet material, and the suction cup 41 is evacuated to suction the sheet material. Further, the control block 91 controls the electromagnetic valve 88, the compressor 86 of the air generating means compresses the air, and the vacuum device 87 of the vacuum generating means makes the vacuum. The air blowing and suction may be performed by separate pipes without using the electromagnetic valve 88.

The operation will now be described. In order to clean the suction portion of the sheet material, the solenoid valve 88 is opened by a command from the control block 91, and the compressed air from the compressor 86 is blown from the suction cup 41 to blow off dust and the like, thereby removing the sheet material surface and the like. Clean the adsorption surface. When the sheet material is to be sucked, the electromagnetic valve 88 is opened according to a command from the control block 91, and the sheet material is sucked from the suction cup 41 by the vacuum device 87. As described above, the suction of the sheet material S is ensured.

(Embodiment 6)
An automatic sheet material feeding apparatus according to an embodiment of the present invention will be described. FIG. 11 is a main part configuration diagram of the sheet material automatic feeding device. The same functional and mechanical parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the figure, a first mounting table 24 is a mounting table for loading a large-sized sheet material S1, and a second mounting table 25 is a mounting table for loading a small-sized sheet material S, which is installed on the apparatus body 11 side. I have. The second mounting table 25 is recessed so that only a small size can be mounted. The sheet material is a PS plate, and the PS plate is stacked on the first mounting table 24 and the second mounting table 25 with the photosensitive surface on the mounting surface side.

動作 Operation will be described here. Since the large size is the same as the operation of the first embodiment, the description is omitted. Next, the sheet material S2 of a small size is sucked by the suction cup 41 as shown in the figure, and the motor 46 is rotated and rotated clockwise in the figure, and then supplied to the roller 66 and sent out to the next step. I have. As described above, if the sizes are sorted when the sheet materials are stacked, the size detection as described in the first embodiment becomes unnecessary, and the structure is simplified. As described above, sheet materials having different sizes can be easily and automatically supplied.

It is a block diagram of a sheet material automatic supply apparatus. It is a block diagram of a sheet material measurement part. It is an explanatory view of a sucker adsorption position of a sheet material. FIG. 3 is a configuration diagram illustrating suction, separation, and conveyance of a sheet material. FIG. 5 is a configuration diagram illustrating an upper surface of FIG. 4. FIG. 3 is a diagram illustrating a configuration of separation when a sheet material is adsorbed and an enlarged view of a main part. It is a block diagram of a part which detects the separation failure of a sheet material. FIG. 2 is a configuration diagram illustrating a cover cover portion and its periphery in the automatic sheet material feeding device. It is a lineblock diagram of a human body safety device of a sheet material automatic feeding device. It is a principal part block diagram of a sheet material automatic supply apparatus. It is a principal part block diagram of a sheet material automatic supply apparatus.

Explanation of reference numerals

Reference Signs List 20 mounting table 21 mounting surface 26 transmission type sensor 40 suction unit 41, 41A, 41B, 41C, 41D sucker 42A, 42B, 42C, 42D suction position 43A, 43B, 43C suction position 75 detection unit 77 measuring arm 80 operation panel 86 Compressor 87 Vacuum unit 91 Control block 96 Drive source roller S, S1, S2, S3, S4 Sheet material

Claims (8)

In a sheet material automatic feeding apparatus for automatically feeding sheet materials stacked on a mounting table one by one, sheet material measuring means for measuring at least one of a vertical size, a horizontal size and a thickness of the sheet materials having different sizes. A sheet material automatic feeding apparatus, wherein the method for sucking the sheet material is selected based on a measurement result of the sheet material measuring means. The sheet material automatic feeding apparatus according to claim 1, wherein the selection of the suction method selects the number of suction cups of the sheet material based on the vertical size of the sheet material. The sheet material automatic feeding apparatus according to claim 1, wherein the selection of the suction method selects a sucker position of the sheet material based on a vertical size of the sheet material. In a sheet material automatic feeding apparatus for automatically feeding sheet materials loaded on a mounting table one by one, at least a plurality of sheet materials are sucked when the sheet materials stacked on the mounting table are sucked. Wherein the sheet material is separated by performing one of vibration, impact on the sheet material, and air blowing on the side surface of the sheet material. In a sheet material automatic feeding device for automatically feeding sheet materials loaded on a mounting table one by one, at least one of the vertical size, the horizontal size, and the thickness of the sheet materials having different sizes is measured before the sheet material is sucked. And a sheet material automatic feeding device for detecting a sheet material suction error based on a result of the sheet material measuring means. The sheet material automatic feeding device according to claim 5, wherein the detection of the sheet material attraction error is performed by overlapping the sheet materials. In a sheet material automatic feeding apparatus for automatically feeding sheet materials stacked on a mounting table one by one, sheet material measuring means for measuring at least one of a vertical size, a horizontal size and a thickness of the sheet materials having different sizes. And an at least one of a display, a warning, and an operation stop when an adsorption error is detected based on a measurement result of the sheet material measuring means. A suction member that adsorbs the surface of the sheet material after blowing air onto the surface of the sheet material, air generating means for supplying air to the suction member, and vacuum generating means for vacuuming the suction member A sheet material automatic feeding device characterized by the above-mentioned.

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