JP2006289582A - Cutting method and cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely and efficiently cut various cutting object materials different in a construction material by a single device. <P>SOLUTION: This cutting device 2 has a fixed board 3 for placing the cutting object materials, a movable board 4 vertically movably arranged above the fixed board 3 and replaceably installing a blade die 5 on the lower side, a sending-out mechanism for moving the cutting object materials on the fixed board 3, and a driving control device 20 for cutting the cutting object materials by vertically moving the movable board 4. The driving control device 20 has a crankshaft mechanism 6, a servomotor 12 connected to this crankshaft mechanism 6 via a speed reducer 11, and a sequencer 16 electrically connected to this servomotor 12 via a servo amplifier 13 and a positioning unit 14. The sequencer 16 variably controls a speed in a stroke for vertically moving the movable board 4 by the servomotor 12, and vertically moves the movable board 4 at a speed H faster than a low speed in the vertical movement except for cutting by lowering the movable board 4 at the preset low speed L only during the cutting. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cutting method and a cutting apparatus for cutting a material to be cut into a desired product by automatic control.

In general, a cutting device that cuts a material to be cut into a desired product is provided with a fixed platen on which the material to be cut is placed, and is movable up and down above the fixed platen. The movable platen, a drive control device for moving the movable plate up and down to cut the material to be cut, and a feed means for moving the material to be cut on the fixed platen (for example, see Patent Document 1). Conventionally, a cutting device is known in which a movable platen is moved up and down by a crankshaft mechanism, and an inverter motor is connected to the crankshaft of the crankshaft mechanism via a clutch and a belt (see, for example, Patent Document 2). ). Furthermore, conventionally, a sheet cutting device including a brake that locks the blade at a standby position in order to prevent over-rotation is known (see, for example, Patent Document 3).
JP 2001-162590 A (page 4, FIG. 1) JP-A-8-243984 (page 3, FIG. 2) Japanese Patent Laying-Open No. 2003-200382 (5th and 6th pages, FIG. 2)

  However, in the above-described conventional cutting apparatus, the movable platen moves up and down at a predetermined constant speed, so that the material to be cut is different cutting such as high strength nonwoven fabric, high strength woven fabric, high adhesive material, high strength rolled material, etc. In the case of materials that require force, there is a problem that although the vertical movement speed of the movable platen can be changed according to those materials, only the cutting speed at the time of cutting cannot be changed. In addition, when the movable platen is moved up and down intermittently, if a brake that stops at the upper end (top dead center of the vertical movement stroke) is provided to keep the cutting performance at a certain level, it will stop due to brake wear, temperature, and humidity. There is a problem that the position is not constant and unstable and needs to be corrected or corrected. Also, in order to ensure cutting according to the material of the material to be cut, it is necessary to hold the cutting completion state of the blade for a specified time, that is, even when the blade mold is held against the material to be cut. Even if the movable panel is configured to stop at the lower end (bottom dead center of the vertical movement stroke) by the brake, the stop position may become unstable due to the performance of the brake, and the cutting position can be accurately maintained. There is a problem that it is difficult. Furthermore, there is a problem in that brake wear powder, clutch wear powder, and transmission belt wear powder are scattered around.

  The present invention has been made in order to solve the above-described problems, and with a simple configuration, the speed during the up-and-down movement of the movable platen can be varied, and a variety of materials to be cut with different materials can be reliably obtained with a single device. It is another object of the present invention to provide a cutting method and a cutting apparatus that can cut efficiently.

  The cutting method according to the first aspect of the present invention includes a fixed platen on which a material to be cut is placed, a movable plate provided above the fixed plate so as to be movable up and down, and a blade type attached to the lower side in a replaceable manner. A plate, a drive control device that moves the movable plate up and down to cut the material to be cut, and a feed mechanism that moves the material to be cut on the fixed plate, and sequentially feeds the material to be cut onto the fixed plate by the sending means, A cutting method in which a movable platen is moved up and down by a drive control device to cut a material to be cut, and the speed during the process of moving the movable plate up and down is variably controlled, and the movable platen is preset only during cutting. It is intended to descend at a low speed.

  In the cutting method according to the first aspect of the present invention, a fixed platen on which the material to be cut is placed, a movable platen provided above the fixed plate so as to be movable up and down, and a blade type attached to the lower side in a replaceable manner. , Equipped with a drive control device that moves the movable plate up and down to cut the material to be cut and a feed mechanism that moves the material to be cut on the fixed plate, and sequentially feeds the cut material onto the fixed plate by the feed means to drive control A cutting method in which the movable platen is moved up and down by the apparatus to cut the material to be cut, and the speed during the process in which the movable platen moves up and down is variably controlled. Since the blade is lowered at a speed, the movable plate is lowered at a speed higher than the low speed during cutting until the blade mold reaches the position immediately before cutting from the upper position, and then the blade mold starts cutting. Until it is completed Is lowered, then, it can be increased from the blade-type cutting completion position until it reaches the upper position, at a speed higher than the low speed between the cutting movable platen again. For this reason, it can set so that the speed | rate of the blade type | mold during cutting may be made slow according to the material of a to-be-cut material, and it can cut reliably even if it is to-be-cut material from which a material differs. Moreover, when the movable platen moves up and down except during cutting, that is, until the blade type reaches the position immediately before cutting from the upper position and until the blade type reaches the upper position from the cutting completion position. It can be moved up and down at a higher speed than the low speed during cutting, and the working time can be shortened.

  In the cutting method according to the second aspect, the time between the cutting is a period from the position immediately before cutting to the cutting completion position according to the thickness of the material to be cut.

  In the cutting method according to claim 2, since the cutting is performed until the blade mold reaches the cutting completion position from the position immediately before cutting according to the thickness of the material to be cut. Increased efficiency.

  Furthermore, the cutting method according to the third aspect is such that the movable platen is controlled so that the blade mold is held at the cutting completion position for a preset time at the time of cutting.

  In the cutting method according to the third aspect, since the movable platen is controlled so that the blade mold is held at the cutting completion position for a preset time at the time of cutting, the blade mold is covered at the set time cutting completion position. Even if the material to be cut is difficult to cut, it can be surely cut.

  In the cutting method according to the fourth aspect, the vertical stroke width of the movable platen is made variable.

  In the cutting method according to the fourth aspect, since the vertical stroke width of the movable platen is variable, the work time is shortened if the vertical stroke width of the movable platen is shortened according to the material of the material to be cut.

  A cutting device according to a second aspect of the present invention is a movable platen on which a material to be cut is placed, a movable plate provided above the fixed plate so as to be movable up and down, and a blade type attached to the lower side in a replaceable manner. A cutting device comprising a panel, a drive control device for moving the movable plate up and down to cut the material to be cut, and a feed mechanism for moving the material to be cut on the fixed plate, during the process of moving the movable plate up and down And a drive control device that lowers the movable plate at a preset low speed only during cutting.

  In the cutting apparatus according to the second aspect of the present invention, a fixed platen on which a material to be cut is placed, a movable plate provided above the fixed plate so as to be movable up and down, and a blade type attached to the lower side in a replaceable manner. A cutting device comprising a panel, a drive control device for moving the movable plate up and down to cut the material to be cut, and a feed mechanism for moving the material to be cut on the fixed plate, during the process of moving the movable plate up and down The speed of the blade is adjusted in advance according to the material of the material to be cut. It can be set so as to be slow, and even if the material to be cut is different, it can be cut reliably. Moreover, when the movable platen moves up and down except during cutting, that is, until the blade type reaches the position immediately before cutting from the upper position and until the blade type reaches the upper position from the cutting completion position. It can be moved up and down at a speed faster than the low speed during cutting, and the working time can be shortened. For this reason, a variety of materials to be cut with different materials can be cut with a single device, and the working time is shortened.

  The cutting device according to claim 6 is provided with a cutting force display mechanism for detecting and calculating a load applied to the drive control device at the time of cutting and displaying the calculation result as a cutting force.

  In the cutting device according to the sixth aspect, the cutting force display mechanism for detecting and calculating the load applied to the drive control device at the time of cutting and displaying the calculation result as the cutting force is provided, so that the cutting force is checked in real time. It is possible to work, and it is possible to prevent the occurrence of defective products by monitoring whether the cutting force is appropriate. Further, it is possible to set an optimum cutting speed that matches the material of the material to be cut in consideration of the cutting force.

  In the cutting device according to claim 7, the drive control device includes a crankshaft mechanism that moves the movable plate up and down, a servomotor that is connected to one end of the crankshaft of the crankshaft mechanism via a speed reducer, and the servomotor. An electrically connected servo amplifier, a control unit that is electrically connected to the servo amplifier via a positioning unit and an analog input unit, and stores a pre-input work program, and is electrically connected to the control unit A display device, an encoder connected to the other end of the crankshaft, and a high-speed counter electrically connected to the encoder and electrically connected to the analog input unit and the control unit. It is what I did.

  In the cutting device according to the seventh aspect, the drive control device includes a crankshaft mechanism that moves the movable plate up and down, a servomotor that is connected to one end of the crankshaft of the crankshaft mechanism via a speed reducer, and the servomotor. An electrically connected servo amplifier, a control unit that is electrically connected to the servo amplifier via a positioning unit and an analog input unit, and stores a pre-input work program, and is electrically connected to the control unit A display device, an encoder connected to the other end of the crankshaft, and a high-speed counter electrically connected to the encoder and electrically connected to the analog input unit and the control unit. As a result, by controlling the servo motor, the speed at which the movable plate moves up and down can be variably controlled. It can be the top and bottom of the stroke width of the movable platen variable by swinging the crank shaft. Further, since the vertical position of the movable board can be accurately set by the servo motor, it is not necessary to provide a clutch or a brake as in the prior art. Furthermore, since the vertical movement speed of the movable plate can be freely controlled, an optimum cutting speed can be designated according to the material to be cut. Further, by controlling the servo motor, the blade mold can be kept pressed against the material to be cut at the set time cutting completion position.

  In the cutting method according to the first aspect of the present invention, a fixed platen on which a material to be cut is placed, a movable plate provided above the fixed plate so as to be movable up and down, and a blade type attached to the lower side in a replaceable manner. A plate, a drive control device that moves the movable plate up and down to cut the material to be cut, and a feed mechanism that moves the material to be cut on the fixed plate, and sequentially feeds the material to be cut onto the fixed plate by the sending means, A cutting method in which a movable platen is moved up and down by a drive control device to cut a material to be cut, and the speed during the process of moving the movable plate up and down is variably controlled, and the movable platen is preset only during cutting. By lowering at a low speed, even a variety of materials to be cut with different materials can be reliably cut at a reduced speed. In addition, since the speed during the up-and-down movement of the movable platen other than during cutting can be increased, work efficiency is improved.

  In the cutting apparatus according to the second aspect of the present invention, a fixed platen on which a material to be cut is placed, a movable plate provided above the fixed plate so as to be movable up and down, and a blade type attached to the lower side in a replaceable manner. A cutting device comprising a panel, a drive control device for moving the movable plate up and down to cut the material to be cut, and a feed mechanism for moving the material to be cut on the fixed plate, during the process of moving the movable plate up and down With a drive control device that variably controls the speed of the machine and lowers the movable plate at a preset low speed only during cutting, a variety of materials to be cut can be cut reliably and efficiently. can do.

  For the purpose of reliably and efficiently cutting various materials to be cut with different materials, the speed during the process of moving the movable plate up and down is variably controlled. It was realized by moving down at a speed and moving up and down at a speed faster than the low speed when moving up and down except during cutting.

  Hereinafter, the present invention will be described with reference to embodiments shown in the drawings. FIG. 1 is a configuration diagram of a cutting apparatus according to the present embodiment. As shown in FIG. 1, the cutting device 2 according to the present embodiment has a fixed platen 3 on which a material to be cut (not shown) is conveyed, and a movable plate provided above the fixed platen 3 so as to be movable up and down. A drive control device 20 for operating the board 4, the blade mold 5 attached to the lower surface of the movable board 4 in a replaceable manner, and the movable board 4 and a cutting material feeding mechanism (not shown) based on the input work program. And is configured. The material to be cut is not only resin film, cellophane, packing, felt, sponge, rubber, urethane foam, aluminum wheel, copper wheel, cloth, paper, but also high strength nonwoven fabric, high strength woven fabric, high adhesive material, high strength rolled material Various materials having different cutting forces are used regardless of whether they are soft or hard, such as materials, roll materials, and sheet materials.

  A crankshaft mechanism 6 is connected to the movable platen 4 to move the movable platen 4 up and down with a fixed vertical stroke with respect to the fixed platen 3 (see FIGS. 2A and 2B). As shown in FIGS. 9A to 9C, the crankshaft mechanism 6 is movable with a crankshaft 7 provided in a direction perpendicular to the cutting material conveyance direction below the fixed platen 3. A slide block 32 attached to a slide shaft 31 extending downward from both sides of the upper board 30 of the board 4, a joint shaft 33 connecting the slide blocks 32, and one end side pivoting to both sides of the joint shaft 33. The connecting plate 35 is configured to be freely connected and a circular hole 34 formed at the other end into which the crankpin 7A of the crankshaft 7 is inserted. In the crankshaft mechanism 6, when the crankshaft 7 is driven to rotate, the crankpin 7A rotates along the inner peripheral surface of the circular hole 34, and the upper part of the eccentric connecting plate 35 swings up and down to move the joint shaft 33. The movable platen 4 is moved up and down to move up and down with a fixed stroke St1 (see FIG. 8A, 40 mm in this embodiment) with respect to the fixed platen 3.

  The drive control device 20 includes a crankshaft mechanism 6, a speed reducer 11 connected to one end of the crankshaft 7 of the crankshaft mechanism 6, and a servo motor 12 connected to the speed reducer 11 to rotationally drive the crankshaft 7. A servo amplifier 13 electrically connected to the servo motor 12; and a sequencer (control unit) 16 electrically connected to the servo amplifier 13 via a positioning unit 14 and an analog input unit 15. . A display device 17 is electrically connected to the sequencer 16. The sequencer 16 serves as a microprocessor, and a storage device (memory, FD drive, FD) and a keyboard are connected to the sequencer 16. A plurality of work programs are stored in advance in a memory or a storage device built in the sequencer 16. This work program includes product information such as the size of the material to be cut, the number of shots, and the feed amount, blade type instruction information of the blade type 5 that matches this product information, blade height data of each blade type, and the like. The blade height here refers to the height from the lower surface of the movable platen 4 to the blade tip of the blade type. When the command signal from the sequencer 16 in which the work program is stored in advance is output to the servo amplifier 13 via the positioning unit 14, the drive control device 20 receives the command signal from the positioning unit 14. The servo motor 12 is controlled and driven. The servo amplifier 13 outputs the motor torque value of the servo motor 12 to the analog input unit 15 as an analog voltage. The drive control device 20 drives a feed mechanism (not shown) to feed the material to be cut toward the fixed platen 3.

  The drive controller 20 is electrically connected to the encoder (detector) 18 connected to the other end of the crankshaft 7, the encoder 18, and the analog input unit 15 and the sequencer 16. The high-speed counter 19 is provided. When the high-speed counter 19 detects the rotation angle of the crankshaft 7 via the encoder 18, the high-speed counter 19 outputs the signal to the sequencer 16 and displays it on the display device 17. The high-speed counter 19 outputs the detected rotation angle data of the crankshaft 7 to the analog input unit 15 as an analog voltage. The sequencer 16 controls the servo amplifier 13 with the positioning unit 14 and refers to the analog input unit 15 and the high-speed counter 19, and further refers to a value that is uniquely determined in advance by the machine configuration, and a cutting unit that the blade mold 5 cuts. The cutting force is calculated and the result is displayed on the display device 17, and the cutting force display mechanism is constituted by these components. That is, the cutting force display mechanism detects and calculates a load applied to the servo motor 12 at the time of cutting (converts and calculates the cutting load current value flowing through the servo motor 12), and displays the calculation result as the cutting force. It has become. For this reason, the work can be performed while checking the cutting force in real time, so that the work can be performed while monitoring whether the cutting force is appropriate. For this reason, generation | occurrence | production of inferior goods can be prevented beforehand. In addition, it is possible to set an optimum cutting speed that matches the material of the material to be cut in consideration of the cutting force.

  By the way, in the cutting device 2 according to the present embodiment, since the servo motor 12 is connected to the crankshaft 7 via the speed reducer 11, the rotation of the crankshaft 7 is shifted during rotation to accelerate or decelerate. You can also. Thus, since the speed during the stroke in which the movable platen 4 moves up and down can be variably controlled, the movable platen 4 is moved up and down at a high speed H during vertical movement other than cutting (see FIG. 3 pattern A and FIG. 6A). At the time of cutting, the speed of the movable platen 4 is reduced by the crank motion as the crankshaft 7 approaches the bottom dead center. When the crankshaft 7 reaches the bottom dead center, the speed is reduced the most and then accelerated again. The deceleration due to the crank motion at the time of cutting is preset according to the quality of the material to be cut. After cutting is completed, the work is moved up and down at the high speed H as described above, so that the work is made more efficient. Since the movable platen 4 is moved up and down at a high speed H except at the time of cutting, the movable platen 4 is relatively slow at the time of cutting.

  Further, as described above, in the cutting device 2 according to the present embodiment, the servo motor 12 is connected to the crankshaft 7 via the speed reducer 11, and the rotation of the crankshaft 7 is shifted during rotation to accelerate the rotation. Therefore, the speed during the stroke in which the movable platen 4 moves up and down can be variably controlled. Therefore, the movable platen 4 is lowered at a preset low speed L only during cutting, and at a preset high speed H (H> L) faster than the low speed L during vertical movement other than cutting. It is made to move up and down (see pattern B in FIG. 3 and (B) in FIG. 6). That is, according to the material of the material to be cut, for example, in the case of a material that is difficult to cut, the speed of the blade mold 5 at the time of cutting is set to be lowered in advance, and the crankshaft 7 is brought to the bottom dead center due to the crank motion. In addition to being decelerated as it approaches, at the time of cutting, the rotation of the crankshaft 7 is decelerated to ensure cutting. When the movable platen 4 moves up and down except during cutting, that is, until the blade mold 5 reaches the position immediately before cutting from the upper position, and the blade mold 5 is at the cutting completion position (closest to the lowermost position or the lowermost position). From the position) to the upper position, the movable platen 4 is moved up and down at a preset high speed H. For this reason, the cutting machine 2 of the present invention can change the vertical movement speed for each stroke as compared with the conventional cutting machine that repeats the up and down strokes of the movable platen 4 at the same speed. The working time is shortened by increasing the vertical movement speed of the movable platen 4 except for the time. As described above, since the cutting device 2 is driven by the servo motor 12, it can be started and stopped freely and easily without providing a clutch or brake having a complicated mechanism as in the conventional device. It can be performed with high accuracy, and the movable platen 4 can be stopped at the upper end position (top dead center) and the lower end position (bottom dead center) with high accuracy and freedom. In addition, the cutting start position of the blade mold 5 in this embodiment means a position where the descending blade mold 5 reaches the upper surface of the material to be cut or a position in contact with the material to be cut, and a cutting completion position of the blade mold 5 Means the position where the blade mold 5 cuts the material to be cut and the end blade mold 5 is at the lowermost position or near the lowermost position.

  In addition, the drive control device 20 is a material that is preferably cut at a slower speed, depending on the material of the material to be cut, for example, until the blade mold reaches the cutting completion position from the position immediately before cutting. It is also possible to lower the movable platen 4 at a speed Lv (Lv <L) further decelerated from the low speed L. For this reason, even if it is a to-be-cut material requested | required to cut at a slower speed | rate, it can cut reliably.

  Furthermore, at the time of cutting, the drive control device 20 controls the movable platen 4 so that the blade mold 5 is held at a cutting completion position for a preset time T1 (pattern C in FIG. 3 and FIG. 6). (See (C)). For this reason, depending on the material of the material to be cut, for example, even if the material to be cut is soft or easily stretched, the blade mold 5 remains pressed for the time T1 set at the cutting completion position. By making it easy to cut. Moreover, since this cutting device 2 drives the crankshaft 7 with the servomotor 12, not only can the crankshaft 7 be rotated in one direction, but the crankshaft 7 can be passed through the bottom dead center, Further, the vertical stroke width St1 of the movable platen 4 is rotated around the bottom dead center at an angle of 360 degrees or less (see FIG. 8A and patterns D to F in FIG. 4). Can be shortened (see the stroke width St2 in FIG. 8B). Furthermore, the upper and lower stroke width ST1 of the movable platen 4 can be shortened by preventing the crankshaft 7 from passing through the bottom dead center and rotating in the forward and reverse directions within an angle of 180 degrees (see FIG. 8 (B) stroke width St3 and patterns G to I in FIG. 5). For this reason, the useless operation | movement of the up-and-down movement of the movable board 4 other than cutting can be omitted, and working time can be shortened.

  Next, the cutting method according to the present invention will be described based on the operation of the cutting apparatus 2 according to the above embodiment. The cutting device 2 sequentially feeds the material to be cut onto the upper surface of the fixed platen 3 by a feed mechanism (not shown), and the blade 5 of the movable platen 4 is moved up and down by the drive control device 20 to cut the material to be cut. . When a work program is selected according to the material of the material to be cut and the cutting method by the sequencer 6 in which the work program is stored in advance, the drive control device 20 receives positioning information from the positioning unit 14 based on the work program. The servo amplifier 13 controls and drives the servo motor 12 based on this positioning information, and the driving force of the servo motor 12 is transmitted to the crankshaft 7 via the speed reducer 11. The movable platen 4 is moved up and down by the rotational drive of the crankshaft 7. The servo motor 12 lowers the movable platen 4 at a preset high speed H (see FIG. 8) until the blade mold 5 reaches the position immediately before cutting from the upper position based on the work program of the sequencer 16. (First step), and subsequently, the movable platen 4 is lowered at a preset low speed L (second step) until the blade mold 5 starts cutting and is completed (second step). After the cutting is completed, the movable platen 4 is again raised at the preset high speed H until the blade mold 5 reaches the upper position from the cutting completion position (third step). Therefore, according to the material of the material to be cut, that is, according to the difficulty of cutting, etc., the speed of the blade mold 5 at the time of cutting can be set in advance to be slow, even if the material to be cut is different. Even so, it can be reliably cut with a single device. Moreover, when the movable platen 4 moves up and down except during cutting, that is, until the blade mold 5 reaches the position immediately before cutting from the upper position and until the blade mold 5 reaches the upper position from the cutting completion position. The panel 4 can be moved up and down at a preset high speed H, and the working time can be shortened.

  In the cutting device 2 according to the above embodiment, the mechanism for moving the movable platen 4 up and down is configured by the crankshaft mechanism 6, but the present invention is not limited to this, and is configured by a cam mechanism instead of the crankshaft mechanism. Needless to say, it may be. Further, in the cutting method according to the above-described embodiment, the speed at which the movable platen 4 descends to just before cutting after the cutting of the blade mold 5 is completed in the third step until the blade mold 5 reaches the upper position from the cutting completion position. The speed is the same as H, but is not limited to this. Needless to say, it may be faster than the slow speed L at the time of cutting.

It is a lineblock diagram of the cutting device concerning one example of the present invention. Example 1 It is explanatory drawing which shows the movable board and crankshaft mechanism of the cutting device of FIG. It is a figure which shows the deceleration pattern at the time of the cutting | disconnection when a crankshaft rotates. It is a figure which shows the deceleration pattern at the time of a cutting | disconnection when a crankshaft passes through a bottom dead center and rock | fluctuates. It is a figure which shows the deceleration pattern at the time of the cutting | disconnection when a crankshaft rocks | fluctuates without passing through a bottom dead center. (A) thru | or (C) is a graph which shows the relationship between the rotational speed of a servomotor, and a crankshaft angle for every deceleration pattern at the time of a cutting | disconnection when a crankshaft rotates, respectively. (A) thru | or (D) is a graph which respectively shows the relationship between the rotational speed of a servomotor, and a crankshaft angle for every deceleration pattern at the time of a cutting | disconnection when a crankshaft rock | fluctuates. (A) and (B) are graphs showing the relationship between the speed of the movable platen and the vertical position of the cutting apparatus of FIG. (A) thru | or (C) are explanatory drawings which respectively show a crankshaft mechanism.

Explanation of symbols

2 Cutting device 3 Fixed platen 4 Movable platen 5 Blade type 20 Drive control device L Low speed set

Claims (7)

A fixed platen on which the material to be cut is placed, a movable plate provided on the upper side of the fixed plate so as to be movable up and down, and a blade type attached to the lower side so as to be replaceable, and a material to be cut by moving the movable plate up and down It is equipped with a drive control device for cutting and a feed mechanism for moving the material to be cut on the fixed platen. The material to be cut is sequentially fed onto the fixed platen by the sending means, and the movable platen is moved up and down by the drive control device for cutting. A cutting method for cutting material,
A cutting method characterized by variably controlling the speed during the stroke of moving the movable platen and lowering the movable plate at a preset low speed only during cutting.   2. The cutting method according to claim 1, wherein the interval between the cuttings is a period from the position immediately before cutting to the cutting completion position according to the thickness of the material to be cut.   3. The cutting method according to claim 1, wherein the movable platen is controlled so that the blade mold is held at a cutting completion position for a preset time at the time of cutting. The cutting method according to any one of claims 1 to 3, wherein a vertical stroke width of the movable board is variable.
. A fixed platen on which the material to be cut is placed, a movable plate provided on the upper side of the fixed plate so as to be movable up and down, and a blade type attached to the lower side so as to be replaceable, and a material to be cut by moving the movable plate up and down A cutting device comprising a drive control device for cutting and a feed mechanism for moving a material to be cut on a fixed plate,
A cutting apparatus comprising: a drive control device that variably controls a speed during a stroke in which the movable plate moves up and down, and lowers the movable plate at a preset low speed only during cutting.   6. The cutting device according to claim 5, further comprising a cutting force display mechanism for detecting and calculating a load applied to the drive control device at the time of cutting and displaying the calculation result as a cutting force.   The drive control device includes a crankshaft mechanism that moves the movable plate up and down, a servomotor that is connected to one end of the crankshaft of the crankshaft mechanism via a speed reducer, a servo amplifier that is electrically connected to the servomotor, The servo amplifier is electrically connected to the positioning unit and the analog input unit, the control unit storing the work program inputted in advance, the display device electrically connected to the control unit, and the crankshaft 6. An encoder connected to the other end, and a high-speed counter electrically connected to the encoder and electrically connected to the analog input unit and the control unit. 6. The cutting device according to 6.

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