JP2012157906A - Cutting method and cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the amount of power consumption of a cutting device, and to achieve power saving by a simple constitution.SOLUTION: The cutting device 2 comprises: a movable board 4 which is attached to the upper part of a fixed body 3 on which a material to be cut is placed, and in which a cutting mold 5 is attached to the lower side; a drive control device 20 which vertically moves the movable board 4 at a constant speed H, and cuts the material to be cut; and a feed-out mechanism which moves the material to be cut on the fixed board 3. The drive control device 20 comprises: a crank shaft mechanism 6; a servo motor 12 connected to the crank shaft mechanism 6 via a reduction gear 11; and a sequencer 16 which is electrically connected to the servo motor 12 via a servo pump 13 and a positioning unit 14. The sequencer 16 variably controls a speed in a process in which the movable board 4 is vertically moved by the servo motor 12, ascends the movable board 4 at a speed L lower than a preset ascending speed H at the ascending of the movable board 4 during the blade mold is released from a material to be cut after the completion of the cutting, and suppress the power consumption.

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. A movable table, a drive control device for moving the movable plate up and down at a constant speed to cut the material to be cut, and a moving table for moving the material to be cut on the fixed plate (for example, see Patent Document 1). ). In such a cutting apparatus, the movable platen is moved up and down at a predetermined constant speed. In such an apparatus, the cutting speed cannot be changed at the time of cutting, and thus there is a problem that it is difficult to reliably cut according to the material of the material to be cut. For this reason, the present applicants etc. have proposed a cutting device that variably controls the speed during the stroke of the movable plate to move up and down, and moves the movable plate at a preset low speed only during cutting ( For example, see Patent Document 2).

JP 2001-162590 A JP 2006-289582 A

  However, in the above-described conventional apparatus, even if the speed during the stroke in which the movable plate moves up and down is set to a low speed only during cutting, in order to produce a final product in a large amount in a short time from the viewpoint of efficiency, When the movable plate is raised, the movable plate is raised quickly at a constant speed or at a high speed so as to shorten the operation time. For this reason, when raising a heavy movable board by constant speed or high-speed driving | running, the power consumption according to the specification of a cutting device is consumed. By the way, in the cutting apparatus having the conventional moving table, the electric power consumed to move the movable plate up and down accounts for almost 90% of the entire apparatus, and the electric power consumed as compared with other driving mechanisms such as the moving table. Is particularly high. On the other hand, as the cutting equipment has become more sophisticated, it has become possible to produce a large amount of the final product in a short time, but there are days or time to deliver the manufactured final product. After the final product is manufactured, the cutting machine is not used, the power is turned off and the machine is stopped. For this reason, in the final product manufacturing, power consumption during constant speed or high speed operation must be consumed according to the number of up and down movements of the movable plate regardless of the manufacturing time, and it is difficult to suppress power consumption. There was a problem.

  SUMMARY An advantage of some aspects of the invention is that it provides a cutting method and a cutting apparatus that can suppress the power consumption of the cutting apparatus with a simple configuration.

  The cutting method according to claim 1 of the present invention includes a fixed platen on which a 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. And a feed mechanism for moving the material to be cut on the fixed platen, cutting the material to be cut onto the fixed plate sequentially by the sending means, and moving the movable platen up and down by the drive control device to cut the material to be cut A method that variably controls the speed during which the movable plate moves up and down, and the movable plate is slower than a preset ascent rate until the blade mold is released from the material to be cut after completion of cutting. It is characterized by the fact that it is raised at.

  In the cutting method according to claim 1 of the present invention, a fixed platen on which a 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. And a feed mechanism for moving the material to be cut on the fixed platen, cutting the material to be cut onto the fixed plate sequentially by the sending means, and moving the movable platen up and down by the drive control device to cut the material to be cut A method that variably controls the speed during which the movable plate moves up and down, and the movable plate is slower than a preset ascent rate until the blade mold is released from the material to be cut after completion of cutting. When the movable plate is lifted from the bottom dead center, when the movable plate is lifted from the bottom dead center, the speed of the movable plate is reduced compared to the normal operation. It is suppressed.

  In the cutting method according to claim 2 of the present invention, the movable platen is lowered at a preset low speed only 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. It is characterized by the fact that it has been allowed to.

  In the cutting method according to claim 2 of the present invention, the movable platen is lowered at a preset low speed only 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. By doing so, the cutting time is set to the time from the position immediately before cutting to the cutting completion position according to the thickness of the material to be cut, so that the low-speed time is shortened and the work is made efficient. .

  In the cutting method according to claim 3 of the present invention, at the time of cutting, according to the material of the material to be cut, the movable plate is kept in a state where it is held and pressed at a cutting completion position for a preset time. It is characterized by doing so.

  In the cutting method according to claim 3 of the present invention, at the time of cutting, according to the material of the material to be cut, the blade mold is held at the cutting completion position for a preset time and kept pressed. As a result, 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, so the blade mold is pressed against the material to be cut at the preset time cutting completion position. Even if it is a material to be cut that remains cut and difficult to cut, it can be cut reliably.

  The cutting method according to claim 4 of the present invention is characterized in that the vertical stroke width of the movable platen is variable.

  In the cutting method according to claim 4 of the present invention, by making the vertical stroke width of the movable plate variable, the work time is shortened if the vertical stroke width of the movable plate is shortened according to the material of the material to be cut. .

  The cutting device according to claim 5 of the present invention includes a fixed platen on which a material to be cut is placed, a movable platen provided so as to be movable up and down above the fixed platen, and a blade type attached to the lower side in a replaceable manner. And a feed mechanism for moving the material to be cut on the fixed platen, cutting the material to be cut onto the fixed plate sequentially by the sending means, and moving the movable platen up and down by the drive control device to cut the material to be cut This is a device that variably controls the speed during the stroke of the movable platen, and the movable platen that has reached the lowest position is raised in advance until the blade mold is released from the material to be cut. The present invention is characterized in that a drive control device that raises at a speed slower than the speed is provided.

  In the cutting apparatus according to claim 5 of the present invention, a fixed platen on which a material to be cut is placed, a movable platen provided so as to be movable up and down above the fixed platen, and a blade type attached to the lower side in a replaceable manner. And a feed mechanism for moving the material to be cut on the fixed platen, cutting the material to be cut onto the fixed plate sequentially by the sending means, and moving the movable platen up and down by the drive control device to cut the material to be cut This is a device that variably controls the speed during the stroke of the movable platen, and the movable platen that has reached the lowest position is raised in advance until the blade mold is released from the material to be cut. By providing a drive control device that raises at a speed slower than the speed, when the movable plate rises, when the movable plate rises from the bottom dead center, the moving plate rise speed is reduced compared to the normal operation, The power consumption of the drive control device is suppressed.

  According to a sixth aspect of the present invention, there is provided the cutting device, wherein 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 electrically connected to the servo motor, a control unit that is electrically connected to the servo amplifier via the positioning unit and the analog input unit, and stores a pre-input work program; Connected to the 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 characterized by having prepared.

  In the cutting device according to claim 6 of the present invention, the drive control device includes a crankshaft mechanism for moving the movable plate up and down, a servomotor connected to one end of the crankshaft of the crankshaft mechanism via a speed reducer, A servo amplifier electrically connected to the servo motor, a control unit that is electrically connected to the servo amplifier via the positioning unit and the analog input unit, and stores a pre-input work program; Connected to the 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. By providing, it is possible to variably control the speed at which the movable plate moves up and down by controlling the servo motor. The can by swinging the crank shaft to the upper and lower stroke width of the movable plate in the variable. Further, since the vertical movement speed of the movable board can be freely controlled, the speed when the movable board is raised is set to a lower speed than a preset constant speed, thereby suppressing power consumption.

  In the cutting method according to claim 1 of the present invention, a fixed platen on which a 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. And a feed mechanism for moving the material to be cut on the fixed platen, cutting the material to be cut onto the fixed plate sequentially by the sending means, and moving the movable platen up and down by the drive control device to cut the material to be cut A method that variably controls the speed during which the movable plate moves up and down, and the movable plate is slower than a preset ascent rate until the blade mold is released from the material to be cut after completion of cutting. Therefore, the power consumption can be suppressed and the cost can be reduced.

  In the cutting apparatus according to claim 5 of the present invention, a fixed platen on which a material to be cut is placed, a movable platen provided so as to be movable up and down above the fixed platen, and a blade type attached to the lower side in a replaceable manner. And a feed mechanism for moving the material to be cut on the fixed platen, cutting the material to be cut onto the fixed plate sequentially by the sending means, and moving the movable platen up and down by the drive control device to cut the material to be cut This is a device that variably controls the speed during the stroke of the movable platen, and the movable platen that has reached the lowest position is raised in advance until the blade mold is released from the material to be cut. Since the drive control device that raises at a speed slower than the speed is provided, power consumption can be suppressed and cost reduction can be achieved.

FIG. 1 is a configuration diagram of a cutting apparatus according to an embodiment of the present invention. Example 1 FIG. 2 is an explanatory view showing a movable platen and a crankshaft mechanism of the cutting apparatus of FIG. FIGS. 3A and 3B are explanatory views shown in comparison with the prior art. FIGS. 3A and 3B show a conventional example, and FIGS. 3C to 3E show an embodiment of the present invention. FIG. 4 is a diagram showing a deceleration pattern at the time of cutting when the crankshaft rotates. FIG. 5 is a diagram showing a deceleration pattern at the time of cutting when the crankshaft swings through the bottom dead center. FIG. 6 is a diagram showing a deceleration pattern at the time of cutting when the crankshaft swings without passing through the bottom dead center. 7A to 7E are graphs showing the relationship between the rotation speed of the servo motor and the crankshaft angle for each deceleration pattern at the time of cutting when the crankshaft rotates. 8A to 8E are graphs showing the relationship between the rotation speed of the servo motor and the crankshaft angle for each deceleration pattern at the time of cutting when the crankshaft swings. (A) thru | or (C) of FIG. 9 is explanatory drawing which respectively shows a crankshaft mechanism.

  For the purpose of reducing power consumption, a fixed platen on which the material to be cut is placed, a movable platen that can be moved up and down above the fixed platen, and whose blade type is replaceably attached to the lower side, and movable It is equipped with a drive control device that moves the plate up and down at a constant speed to cut the material to be cut, and a feed mechanism that moves the material to be cut on the fixed platen. A cutting method in which the movable platen is moved up and down by the control device to cut the material to be cut, and the speed during the process of moving the movable plate up and down is variably controlled. This was realized by increasing the speed at a slower speed than the preset speed until it was released from the material.

  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 an embodiment of the present invention. 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 (40 mm in this embodiment) with respect to the fixed platen 3.

  As shown in FIG. 1, 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 the crankshaft 7 connected to the speed reducer 11. Servo motor 12 for rotational driving, servo amplifier 13 electrically connected to servo motor 12, and a sequencer (control unit) electrically connected to servo amplifier 13 via positioning unit 14 and analog input unit 15 16). 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.

  In the cutting device 2, since the servo motor 12 is connected to the crankshaft 7 via the speed reducer 11, the rotation of the crankshaft 7 can be changed during the rotation, and can be accelerated or decelerated. Yes. Thus, since the speed during the stroke of the movable platen 4 can be controlled variably, as with the conventional apparatus, any work program (dimension of cut material, number of shots, feed, etc.) is inputted. The movable platen 4 is moved up and down at a high constant speed H so that a large amount of products can be processed in a short time corresponding to product information such as quantity, so that the material to be cut can be sent to the fixed platen 3 side. It has become. That is, in order to enable production of a large amount of products in a short time, the drive performance of the servo motor 12 and the performance of a feed mechanism (not shown) are determined, and the rated power of the entire apparatus is determined based on the drive performance. Among these, the ratio of the power consumption consumed by driving the servo motor 12 occupies a particularly high ratio with respect to the power consumption of the entire apparatus.

  By the way, in the cutting apparatus 2 according to the present embodiment, the movable platen 4 is moved from the lowermost position, that is, from the cutting completion position of the blade mold 5 until the blade mold 5 is detached from the material to be cut. The speed is increased at a slower speed L (L <H). With this configuration, power consumption consumed by driving the servo motor 12 is suppressed. That is, when the movable platen 4 moves upward from the bottom dead center, the movable platen 4 is consumed by making the rising speed of the movable platen 4 lower than the constant speed H without fully operating the driving ability at high speed. The power to be used is greatly reduced. Then, after the blade mold 5 is detached from the material to be cut, the movable platen 4 is raised to the top dead center at a constant speed H (see (C) to (E) in FIG. 3).

  The present applicants and others have actually experimented with an actual machine, and as a result, (C) in FIG. 3 is compared with the case where both the descending speed and the ascending speed of the movable platen 4 are set to constant speed H (see FIG. ) To (E), the descent speed of the movable platen 4 when the descent of the movable platen 4 remains at a constant speed H, and the blade die is cut from the cutting completion position of the blade die 5 (the lowest position of the movable platen 4). In the period from the release to the release, the rising speed was slightly lowered from the constant speed H and slowed down (slow speed L <H), and the rated current could be reduced by 50% at maximum. That is, more power is consumed when raising the movable platen 4 than when lowering the movable platen. Preferably, it is desirable to raise the movable panel 4 at 50% or less of the rated current within a range where the work efficiency is not significantly impaired, and a reduction target power consumption is set in advance, and the rising speed of the movable panel 4 is determined accordingly. You may make it do. As described above, (C) in FIG. 3 shows that cutting is performed at a high constant speed H even when the material to be cut is cut, and the cutting edge is moved from the cutting completion position of the cutting edge 5 (lowermost position of the movable platen 4). FIG. 3D shows an example in which the low speed L is used until the material to be cut is separated. FIG. 3D shows a case where the cutting material is cut at the low speed L when the material to be cut is cut. 3E is an example in which the low speed L is used until the material to be cut is separated. In FIG. 3E, when the material to be cut is cut at the low speed L and the movable platen 4 reaches the lowermost position. In this example, the movement of the movable platen T1 is stopped at that position for a predetermined time, and then the low speed L is set from the cutting completion position of the blade mold 5 until the blade mold is detached from the material to be cut. 3 (B) is an explanatory view showing a comparison of the conventional example, similar to FIG. 3 (A), in which the movable platen 4 is lowered at a high speed, and is set at a low speed L only at the time of cutting. An example is shown in which the movable platen 4 is immediately raised at high speed H from the bottom dead center.

  As described above, in the cutting apparatus 2 according to the present embodiment, the movable platen 4 is lowered at a predetermined constant speed (high speed) H, and after the cutting is completed, the blade mold 5 is detached from the material to be cut. The speed is increased at a lower speed L than the speed H. 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 the end of cutting, only at the initial stage of ascent, acceleration is performed at a speed L slower than the constant speed H as described above, and when the blade mold 5 is detached from the material to be cut, the speed is increased again at the constant speed H.

  That is, in the cutting device 2 according to the present embodiment, when the movable platen 4 moves up and down with the stroke width St1 by the rotation of the crankshaft 7 by 360 °, as shown in FIG. In addition, it is lowered at a low speed L set in advance only during cutting, and at a constant speed H when descending other than cutting, and at a lower speed L (H <L) than the constant speed H when rising up to release from the material to be cut. I try to move it up and down. (See Pattern B in FIG. 4 and (D) in FIG. 7). 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. Then, after the cutting is completed, when the movable platen 4 is raised, the blade mold 5 is lifted at a speed L slower than the lowering speed (constant speed H) until the blade mold 5 is separated from the material to be cut, and the blade mold 5 is detached from the material to be cut. After that, the speed is increased at the same speed as the speed during descent (constant speed H). 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.

  Further, the drive control device 20 controls the movable platen 4 so that the blade mold 5 is held at the cutting completion position for a preset time T1 at the time of cutting (FIG. 3E, FIG. 4). Pattern C and FIG. 7E). 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, In addition, the upper and lower stroke width St2 of the movable board 4 can be made shorter than the stroke width St1 by rotating forward and backward at an angle of 360 degrees or less around the bottom dead center (stroke width St2 <stroke width). St1, Pattern D to Pattern F in FIG. 5, and (C) to (E) in FIG. 8). Further, the vertical stroke width St3 of the movable platen 4 can be shortened by preventing the crankshaft 7 from passing through the bottom dead center and rotating forward and backward at an angle of 180 degrees or less (stroke). Width St3 <stroke width St2 <stroke width St1, see patterns G to I in FIG. For this reason, the useless operation | movement of the up-and-down movement of the movable board 4 other than cutting can be abbreviate | 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. Based on the work program of the sequencer 16, the servo motor 12 lowers the movable platen 4 at a fast constant speed H set in advance until the blade mold 5 reaches the position immediately before cutting from the upper position (the first constant) Step 2) Subsequently, the movable platen 4 is lowered at a preset low speed L until the blade mold 5 starts cutting and is completed (second step), and after the cutting of the blade mold 5 is completed. The blade mold 5 is raised at a speed L lower than the set speed (constant speed H) during the descent until the blade mold 5 is detached from the material to be cut from the cutting completion position (third step). And it is made to raise at the same speed as the setting speed (constant speed H) at the time of a fall until the blade type | mold 5 reaches | attains the uppermost position from the position which removed from to-be-cut material (4th step). For this reason, the power consumption of the servo motor 12 can be suppressed because the blade mold 5 is raised at a speed L slower than the constant speed H while the blade mold 5 is detached from the material to be cut after the cutting is completed. . For this reason, a large energy saving effect can be obtained by slightly extending the working time. Moreover, 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 if it exists, it can cut reliably with a single apparatus.

  In the cutting device 2 according to the above-described embodiment, the mechanism that moves up and down is configured by the crankshaft mechanism 6, but is not limited thereto, and may be configured by a cam mechanism instead of the crankshaft mechanism. Needless to say.

2 Cutting device 3 Fixed platen 4 Movable platen 5 Blade type 20 Drive control device H Constant speed L Low speed (speed slower than constant speed)

Claims (6)

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 mounted on the lower side in a replaceable manner, and the cut material on the fixed platen are moved. A cutting mechanism comprising: a feeding mechanism; and sequentially feeding the material to be cut onto the fixed plate by the sending means, and moving the movable plate up and down by the drive control device to cut the material to be cut;
The speed during the process of moving the movable plate up and down is variably controlled so that the movable plate is raised at a speed slower than a preset rising speed until the blade mold is detached from the material to be cut after cutting is completed. A cutting method characterized by that.   The movable platen is lowered at a preset low speed only 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. Cutting method.   3. The cutting of the movable platen according to the material of the material to be cut at the time of cutting is controlled so as to keep the blade shape held and pressed at a cutting completion position for a preset time. The cutting method described.   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 mounted on the lower side in a replaceable manner, and the cut material on the fixed platen are moved. A cutting device that includes a feeding mechanism, sequentially feeds the material to be cut onto the fixed plate by the sending means, and moves the movable plate up and down by the drive control device to cut the material to be cut;
The speed during the process of moving the movable plate up and down is variably controlled, and the movable plate that reaches the lowest position is slower than the preset ascent rate until the blade mold is released from the material to be cut. A cutting device comprising a drive control device for raising.   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. The encoder according to claim 5, further comprising: 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. The cutting device described.

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