CN114762871A - Press device, control device, and computer program - Google Patents

Abstract

Provides a punching device that prevents overloading from the upper die to the lower die. The slider position calculation unit (A1) calculates the remaining moving distance (d2) of the slider (7) based on the detection result of the rotation detection unit. The comparison part (A2) compares the distance (d1) between the top and bottom between the first detected part (FD) of the upper mold (21) and the second detected part (SD) of the lower mold (23) and the remaining moving distance . The slider control part (A3) controls the slider moving mechanism (5) based on the comparison result of the comparison part. The rotation detection unit detects the crank angle (θs) in a state where the slider is stopped at a position above the bottom dead center of the slider. The distance between the top and bottom indicates a distance detected in a state where the slider is stopped at a position above the bottom dead center of the slider. The remaining moving distance of the slider represents the distance from the position in the vertical direction of the slider when the vertical distance is detected to the bottom dead center of the slider.

Description

Stamping device, control device and computer program

technical field

The present invention relates to a punching device, a control device and a computer program.

Background technique

In the conventional press apparatus, an upper die and a lower die are used to press a workpiece. The press apparatus includes a slider, a support plate, a servo motor, and a motor indicator (for example, Patent Document 1). The slide is mounted with an upper die. The lower mold is placed on the support plate. The servo motor reciprocates the slider in the up-down direction. When the approaching sensor for detecting the approach of the upper mold to the workpiece placed on the lower mold detects that the upper mold is approaching the workpiece, the instruction unit controls the servo motor to change the speed of the slider.

prior art literature

Patent Literature

Patent Document 1: Japanese Patent Laid-Open No. 2016-137497

However, in the conventional press apparatus, for example, due to incorrect adjustment of the closing height of the die or setting of the wrong die, an overload may be applied from the upper die to the lower die near the bottom dead center of the slider.

SUMMARY OF THE INVENTION

The present invention has been made in view of the above-mentioned technical problems, and an object thereof is to provide a punching device, a control device, and a computer program capable of preventing an overload from being applied to a lower die from an upper die.

An exemplary punching apparatus of the present invention includes a slider, a slider moving mechanism, a rotation detection portion, a support plate, a slider position calculation portion, a comparison portion, and a slider control portion. The upper mold of the mold of the object to be processed can be attached to the slider. The slider moves in the vertical direction. The slider moving mechanism converts the rotary motion into the reciprocating motion, so that the slider moves in the vertical direction. The rotation detection unit detects the rotation angle of the rotation movement. The lower mold of the mold can be attached to the support plate. The slider position calculation unit calculates the remaining moving distance of the slider based on the detection result of the rotation detection unit. The comparison part compares the distance between the upper and lower molds, that is, the distance between the upper and lower molds, and the remaining moving distance. The slider control section controls the slider moving mechanism based on the comparison result of the comparison section. The rotation detection unit detects the rotation angle in a state where the slider is stopped at a position above a bottom dead center of the slider. The distance between the top and bottom indicates the distance detected in the state where the slider is stopped at the position above the bottom dead center of the slider. The remaining movement distance of the slider indicates the distance from the position in the vertical direction of the slider when the vertical distance is detected to the bottom dead center of the slider.

An exemplary control device of the present invention controls the stamping device. The punching device includes a slider, a slider moving mechanism, a rotation detection part, and a support plate. The upper mold of the mold of the object to be processed can be attached to the slider. The slider moves in the vertical direction. The slider moving mechanism converts the rotary motion into the reciprocating motion, so that the slider moves in the vertical direction. The rotation detection unit detects the rotation angle of the rotation movement. The lower mold of the mold can be attached to the support plate. The control device includes a slider position calculation unit, a comparison unit, and a slider control unit. The slider position calculation unit calculates the remaining moving distance of the slider based on the detection result of the rotation detection unit. The comparison part compares the distance between the upper and lower molds, that is, the distance between the upper and lower molds, and the remaining moving distance. The slider control section controls the slider moving mechanism based on the comparison result of the comparison section. The rotation angle indicates an angle detected in a state where the slider is stopped at a position above the bottom dead center of the slider. The distance between the top and bottom indicates the distance detected in the state where the slider is stopped at the position above the bottom dead center of the slider. The remaining movement distance of the slider indicates the distance from the position in the vertical direction of the slider when the vertical distance is detected to the bottom dead center of the slider.

An exemplary computer program of the present invention installs a slider including a mold on which an object can be processed and moves in the vertical direction, converts the rotational motion into reciprocating motion, and causes the slider to move in the vertical direction A sliding member moving mechanism that moves, a rotation detecting portion that detects the rotational angle of the rotational motion, and a computer capable of controlling a punching device for a support plate to which the lower die of the die is mounted perform the following steps: based on the rotation detecting portion The detection result calculates the remaining moving distance of the slider; compares the distance between the first detected part of the upper mold and the second detected part of the lower mold, that is, the upper and lower distance and the remaining moving distance ; and controlling the slider moving mechanism based on the comparison result of the upper and lower distance and the remaining moving distance. The rotation angle indicates an angle detected in a state where the slider is stopped at a position above the bottom dead center of the slider. The distance between the top and bottom indicates the distance detected in the state where the slider is stopped at the position above the bottom dead center of the slider. The remaining movement distance of the slider indicates the distance from the position in the vertical direction of the slider when the vertical distance is detected to the bottom dead center of the slider.

According to the exemplary invention, it is possible to provide a punching device, a control device, and a computer program capable of preventing an overload from being applied to a lower die from an upper die.

The foregoing and other features, elements, steps, features, and advantages of the present invention may be more clearly understood in light of the following detailed description of preferred embodiments of the present invention, with reference to the accompanying drawings.

Description of drawings

FIG. 1 is a schematic diagram showing a press apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing the press apparatus of the present embodiment.

FIG. 3 is a flowchart showing a control method of the press apparatus according to the present embodiment.

FIG. 4 is a schematic diagram showing a press apparatus according to a modification of the present embodiment.

Detailed ways

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In addition, the same symbols are attached to the same or equivalent parts in the drawings, and the description thereof will not be repeated.

First, the press apparatus 1 will be described with reference to FIG. 1 . FIG. 1 is a schematic diagram showing a press apparatus 1 according to an embodiment of the present invention. In FIG. 1, the press apparatus 1 is seen from the front. A die 2 of an object to be processed (not shown) is attached to the press apparatus 1 . In FIG. 1, in order to simplify drawing, illustration of the object is abbreviate|omitted. The object is an object to be processed, which is the object to be processed by the press apparatus 1 . The object is made of metal, for example. The object is, for example, a workpiece.

The press apparatus 1 processes the object using the die 2 . Specifically, the press apparatus 1 uses the die 2 to press-process an object. The mold 2 is made of metal, for example. The mold 2 includes an upper mold 21 and a lower mold 23 . The press apparatus 1 sandwiches the object between the upper die 21 and the lower die 23, and presses the object. In addition, in FIG. 1, the metal mold|die 2 is simplified and shown for easy understanding, but the metal mold|die 2 actually has a shape according to the purpose of press working of an object.

As shown in FIG. 1 , the punching device 1 includes a frame 3 , a sliding member moving mechanism 5 , a sliding member 7 , a closed die height adjusting mechanism 9 and a support plate 11 . Preferably, the punching device 1 further includes a distance detection unit 13 .

The frame 3 includes a top 31 , a plurality of columns 33 and a base 35 . For example, the frame 3 includes four columns 33 . The top part 31 is arranged above the base 35 . The base 35 is installed on the ground. A plurality of pillars 33 are arranged between the top portion 31 and the base 35 . A plurality of columns 33 support the top 31 . However, the frame 3 may have a structure in which the top part 31 , the plurality of columns 33 and the base 35 are integrally formed without being separated.

The slider 7 and the support plate 11 are arranged between the top part 31 and the base 35 .

The support plate 11 is arranged on the base 35 . Specifically, the support plate 11 is arranged on the upper surface 35 a of the chassis 35 .

The lower mold 23 can be attached to the support plate 11 . Therefore, when the object is processed, the lower mold 23 is attached to the support plate 11 . Specifically, the lower mold 23 can be attached to the upper surface 11 a of the support plate 11 . Therefore, when the object is processed, the lower mold 23 is attached to the upper surface 11 a of the support plate 11 .

The lower mold 23 includes a lower mold body 231 and a plurality of second protrusions 233 . The lower mold main body 231 is attached to the support plate 11 . The second protruding portion 233 protrudes vertically upward from the lower mold body 231 . Specifically, the second protruding portion 233 protrudes vertically upward from the upper portion 231 a of the lower mold body 231 . The second protrusion 233 has, for example, a substantially cylindrical shape or a substantially cylindrical shape.

The upper die 21 can be attached to the slider 7 . Therefore, when the object is processed, the upper mold 21 is attached to the slider 7 . Specifically, the upper mold 21 can be attached to the lower surface 7 a of the slider 7 . Therefore, when the object is processed, the upper mold 21 is attached to the lower surface 7a of the slider 7 .

The upper mold 21 includes an upper mold body 211 and a plurality of first protrusions 213 . The upper mold body 211 is attached to the slider 7 . The first protruding portion 213 protrudes vertically downward from the upper mold body 211 . Specifically, the first protruding portion 213 protrudes vertically downward from the lower portion 211 a of the upper mold body 211 . The first protrusion 213 has, for example, a substantially cylindrical shape or a substantially cylindrical shape.

The plurality of first protrusions 213 respectively correspond to the plurality of second protrusions 233 . In addition, the first protruding portion 213 and the plurality of second protruding portions 233 face each other in the vertical direction VD.

The slider 7 moves in the vertical direction VD. Specifically, the slider 7 moves along a plurality of guides (not shown) extending in the vertical direction VD.

In FIG. 1 , for convenience of explanation, the top dead center TD and the bottom dead center BD of the slider 7 are shown by black dots. In addition, for convenience, the top dead center TD and the bottom dead center BD are shown by the position in the vertical direction VD of the lower surface 7a of the slider 7 .

The slider 7 reciprocates between the top dead center TD and the bottom dead center BD along the vertical direction VD. By lowering the slider 7 from the top dead center TD, at the bottom dead center BD, the lower end 213a of the first protrusion 213 comes into contact with the upper end 233a of the second protrusion 233 . Therefore, the first protruding portion 213 and the second protruding portion 233 function as stoppers for restricting the descending of the slider 7 . That is, the first protruding portion 213 and the second protruding portion 233 are, for example, stroke end blocks, respectively. In addition, in FIG. 1 , the upper mold main body 211 and the lower mold main body 231 are simplified and shown for the sake of understanding, but in fact, in a state where the first protruding portion 213 and the second protruding portion 233 are in contact, the object is pushed by the upper mold. The main body 211 and the lower die main body 231 are sandwiched, and press working is performed.

The slider moving mechanism 5 converts the rotary motion into a reciprocating motion, and moves the slider 7 along the vertical direction VD. In the example of FIG. 1, the slider moving mechanism 5 moves the slider 7 along the vertical direction VD by the crank mechanism. That is, in the example of FIG. 1, the press apparatus 1 implements a crank press.

The slider moving mechanism 5 is arranged on the top portion 31 . That is, the slider moving mechanism 5 is arranged above the slider 7 . In addition, the slider moving mechanism 5 is connected to the slider 7 via the closed mold height adjustment mechanism 9 .

The mold closing height adjustment mechanism 9 adjusts the position of the slider 7 in the vertical direction VD in a state where the slider 7 is stopped. In the present embodiment, as an example, the closed mold height adjustment mechanism 9 adjusts the position of the slider 7 in the vertical direction VD in a state where the slider 7 is stopped at the top dead center TD.

In other words, the closed mold height adjustment mechanism 9 adjusts the closed mold height. The mold closing height is the distance from the bottom dead center BD of the slider 7 to the upper surface 11 a of the support plate 11 . Since the stroke length of the slider 7 is fixed, adjusting the position of the slider 7 in the vertical direction VD in a state of being stopped at the top dead center TD is substantially equivalent to adjusting the mold closing height. The stroke length represents the distance from the top dead center TD to the bottom dead center BD of the slider 7 .

The closed mold height adjustment mechanism 9 includes a connecting member 91 . Further, the slider moving mechanism 5 is connected to the slider 7 via the connecting member 91 . The connection member 91 includes, for example, a screw member such as a screw.

In the example of FIG. 1 , the slider moving mechanism 5 includes a connecting rod 51 , a crankshaft 52 , a clutch (not shown), a flywheel 53 , a belt 54 , a pulley 55 , and a motor 56 .

The front end portion of the connecting rod 51 is connected to the slider 7 via the connecting member 91 . On the other hand, the base end portion of the connecting rod 51 is connected to the crankshaft 52 . The crankshaft 52 rotates in the rotational direction RD. The rotation of the crankshaft 52 in the rotational direction RD may be described as a forward rotation. In addition, the crankshaft 52 can also rotate in the rotation direction opposite to the rotation direction RD. The rotation of the crankshaft 52 in the rotation direction opposite to the rotation direction RD may be described as reverse rotation.

When the crankshaft 52 rotates, the connecting rod 51 connected with the crankshaft 52 reciprocates up and down. As a result, the slider 7 connected to the connecting rod 51 reciprocates in the vertical direction VD.

In the example of FIG. 1 , when the crank angle θ of the crankshaft 52 is zero degrees, the slider 7 is located at the top dead center TD. On the other hand, when the crank angle θ of the crankshaft 52 is 180 degrees, the slider 7 is located at the bottom dead center BD. The crank angle θ represents the rotational angle at which the slider moving mechanism 5 converts the rotational motion into the rotational motion when the reciprocating motion is performed. In the example of FIG. 1 , the crank angle θ represents the rotation angle of the crank shaft 52 . In addition, the crank angle θ when the crankshaft 52 is located at the uppermost end is set to zero degrees. The crank angle θ corresponds to an example of the "rotation angle of the rotary motion".

One end portion in the axial direction of the crankshaft 52 is connected to the flywheel 53 via a clutch (not shown). Then, the crankshaft 52 rotates with the rotation of the flywheel 53 . The flywheel 53 has, for example, a substantially circular plate shape or a substantially cylindrical shape.

The belt 54 is stretched over the flywheel 53 and the pulley 55 under tension. The pulley 55 has a substantially circular plate shape or a substantially cylindrical shape.

The pulley 55 is connected to the rotating shaft of the motor 56 . Therefore, when the motor 56 rotates, the pulley 55 rotates. When the pulley 55 rotates, the belt 54 rotates. When the belt 54 rotates, the flywheel 53 rotates. When the flywheel 53 rotates, the crankshaft 52 rotates. When the crankshaft 52 rotates, the connecting rod 51 reciprocates up and down. When the connecting rod 51 reciprocates up and down, the slider 7 reciprocates in the vertical direction VD. When the slider 7 reciprocates in the vertical direction VD, the upper mold 21 reciprocates in the vertical direction VD. As a result, the object is sandwiched between the upper mold 21 (specifically, the upper mold main body 211 ) and the lower mold 23 (specifically, the lower mold main body 231 ), and the object is molded.

The distance detection unit 13 detects the distance d1 between the upper and lower sides of the mold 2 . The vertical distance d1 is the distance in the vertical direction VD between the first detection site FD of the upper mold 21 and the second detection site SD of the lower mold 23 . The first detection site FD and the second detection site SD face each other in the vertical direction VD, for example. In the present embodiment, the first detected portion FD represents the lower end 213 a of the first protruding portion 213 . The second detected portion SD represents the upper end 233 a of the second protruding portion 233 .

In the example of FIG. 1 , the distance detecting portion 13 is fixed at a position separated from the mold 2 . Therefore, according to this embodiment, the manufacturer of the press apparatus 1 can assemble the distance detection unit 13 to the press apparatus 1 and sell it. As a result, compared with the case where the distance detection part 13 is fixed to the die 2, the user's convenience of the press apparatus 1 and the die 2 can be improved. For example, the user of the press apparatus 1 and the die 2 does not need to process the die 2 in order to fix the distance detection unit 13 .

Specifically, the distance detection unit 13 is fixed to the frame 3 (eg, the column 33 ). In this case, for example, the distance detection portion 13 is opposed to the space between the first protruding portion 213 and the second protruding portion 233 in the horizontal direction HD.

In this embodiment, the distance detection unit 13 is an image processing device. The image processing device includes a camera and a microcomputer. In this case, the camera of the distance detection unit 13 images the first protrusion 213 and the second protrusion 233 . Then, the microcomputer of the distance detection unit 13 analyzes the images of the first protruding portion 213 and the second protruding portion 233 included in the captured image, and calculates the vertical distance between the first detected portion FD and the second detected portion SD. distance d1. In addition, the distance detection unit 13 may include a camera, and may output a captured image to the control unit 151 ( FIG. 2 ) described later. In addition, the control unit 151 may calculate the vertical distance d1 by analyzing the images of the first protruding portion 213 and the second protruding portion 233 included in the captured image.

In addition, when the distance detection unit 13 is an image processing device, in order to improve the detection accuracy of the distance detection unit 13 , marks may be arranged on the first detection target site FD and the second detection target site SD, respectively. The marking is, for example, a paint of a specific color.

Next, the press apparatus 1 will be described with reference to FIG. 2 . FIG. 2 is a block diagram showing the press apparatus 1 . As shown in FIG. 2 , the punching device 1 further includes a slider position calculation part A1 , a comparison part A2 , a slider control part A3 , a closed mold height adjustment instruction part A4 , and a setting part A5 .

Specifically, the punching device 1 further includes a control device 15 . The control device 15 controls the press device 1 . The control device 15 corresponds to an example of a "computer". As shown in FIG. 1, the control apparatus 15 is fixed to the frame 3 (for example, the column 33), for example. In addition, the position of the control device 15 is not particularly limited, and may be separated from the frame 3 .

The control device 15 includes a control unit 151 , a storage unit 153 , and an operation display unit 155 .

Specifically, the control unit 151 includes a processor such as a CPU (Central Processing Unit) or the like. The storage unit 153 includes a storage device and stores data and computer programs. Specifically, the storage unit 153 includes a main storage device such as a semiconductor memory, and an auxiliary storage device such as a semiconductor memory, a solid-state hard disk, and/or a mechanical hard disk. The storage unit 153 may also include removable media. The storage unit 153 corresponds to an example of a non-transitory computer-readable storage medium.

The control unit 151 includes a slider position calculation unit A1, a comparison unit A2, a slider control unit A3, a closed mold height adjustment instruction unit A4, and a setting unit A5. Specifically, the processor of the control unit 151 executes the computer program stored in the storage device of the storage unit 153, thereby serving as the position calculation unit A1, the comparison unit A2, the slider control unit A3, and the mold closing height adjustment instruction unit A4 And the setting part A5 functions. Details of the control section 151 will be described later.

The operation display unit 155 displays various information and receives operations from the user. Specifically, the operation display unit 155 includes an operation unit B1 and a display unit B2.

The operation part B1 accepts the operation from the user. The operation unit B1 is, for example, a touch panel or a keyboard and a mouse. When the operation part B1 is a touch panel, the operation part B1 and the display part B2 are superimposed and arranged.

For example, the operation unit B1 receives an instruction to adjust the mold closing height from the user. And the operation part B1 outputs the adjustment instruction|indication of the closed mold height to the closed mold height adjustment instruction part A4. The adjustment indication of the closed mold height includes the adjustment amount of the closed mold height. And the mold closed height adjustment instruction part A4 instructs the mold closed height adjustment mechanism 9 to adjust the mold closed height based on the closed mold height adjustment amount. As a result, the closed mold height adjustment mechanism 9 adjusts the closed mold height by the instructed closed mold height adjustment amount. Specifically, the closed mold height adjustment mechanism 9 further includes a drive part 92 . The drive unit 92 is, for example, an induction motor or a servo motor. The drive portion 92 drives the connecting member 91 in a state where the slider 7 is stopped, thereby adjusting the mold closing height.

For example, the operation unit B1 receives various setting values (including stroke lengths) for the slider 7 and the slider moving mechanism 5 from the user. Then, the setting unit A5 stores the various setting values received by the operation unit B1 in the storage unit 153 .

The display unit B2 displays various kinds of information. The display portion B2 is, for example, a liquid crystal display or an organic electroluminescent diode display. The display part B2 corresponds to an example of the "notification part".

The punching device 1 further includes a rotation detection unit 17 . The rotation detection unit 17 detects the crank angle θ. The rotation detection unit 17 is attached to, for example, the crankshaft 52 . Then, the rotation detection unit 17 detects the crank angle θ of the crankshaft 52 and outputs a detection signal indicating the crank angle θ to the control unit 151 . The rotation detection unit 17 is, for example, a rotary encoder.

The press apparatus 1 further includes an operation instruction input unit 19 . The operation instruction input unit 19 receives input of an operation instruction of the press apparatus 1 from the user. The operation instruction input unit 19 is, for example, a push button switch. In addition, the operation instruction input unit 19 may be included in the operation unit B1. Furthermore, the press apparatus 1 may receive an operation instruction from an external apparatus.

The slider control unit A3 controls the slider moving mechanism 5 . For example, the slider control unit A3 controls a clutch (not shown) disposed between the crankshaft 52 and the flywheel 53 to switch between transmission and cutoff of the rotational force from the flywheel 53 to the crankshaft 52 . For example, when the operation instruction input unit 19 receives the input of the operation instruction, the slider control unit A3 controls the clutch and transmits the rotational force from the flywheel 53 to the crankshaft 52 . As a result, the slider 7 reciprocates in the vertical direction VD.

Next, the control unit 151 , the rotation detection unit 17 , and the distance detection unit 13 will be described with reference to FIGS. 1 and 2 .

The rotation detection unit 17 detects the crank angle θ (hereinafter, referred to as “crank angle θs”) in a state where the slider 7 is stopped at a position above the bottom dead center BD of the slider 7 . That is, the crank angle θs represents an angle detected in a state where the slider 7 is stopped at a position above the bottom dead center BD of the slider 7 . The rotation detection unit 17 outputs a detection signal indicating the crank angle θs to the slider position calculation unit A1.

The distance detection unit 13 detects the vertical distance d1 of the mold 2 at the stop position of the slider 7 when the rotation detection unit 17 detects the crank angle θs. That is, the distance detection part 13 detects the distance d1 between the upper and lower sides of the mold 2 in a state where the slider 7 is stopped at a position above the bottom dead center BD of the slider 7 . Therefore, the distance d1 between the upper and lower sides of the mold 2 represents the distance detected when the slider 7 is stopped at a position above the bottom dead center BD of the slider 7 . The distance detection part 13 outputs the detection signal which shows the distance d1 between the upper and lower sides of the mold 2 to the comparison part A2.

The slider position calculation unit A1 calculates the remaining moving distance d2 of the slider 7 based on the detection result of the rotation detection unit 17 . In the present embodiment, the slider position calculation unit A1 calculates the remaining movement distance d2 of the slider 7 based on the crank angle θs detected by the rotation detection unit 17 . The remaining moving distance d2 of the slider 7 represents the distance from the position in the vertical direction VD of the slider 7 when the vertical distance d1 of the mold 2 is detected to the bottom dead center BD of the slider 7 .

For example, the distance d from the current position P of the slider 7 to the bottom dead center BD is represented by equation (1). In the formula (1), "SL" is the stroke length of the slider 7 . f(θ) is a function representing the distance from the top dead center TD of the slider 7 to the current position P, and “θ” is the crank angle θ. When the crank angle θ is input to the function f(θ), the distance from the top dead center TD of the slider 7 to the current position P is output.

d=SL-f(θ)…(1)

The slider position calculation unit A1 calculates the remaining moving distance d2 of the slider 7 as shown in the formula (2) by inputting the crank angle θs to the formula (1).

d2=SL-f(θs)...(2)

The comparison part A2 compares the distance d1 between the upper and lower sides of the mold 2 and the remaining moving distance d2 of the slider 7 . And the slider control part A3 controls the slider moving mechanism 5 based on the comparison result of the comparison part A2. Therefore, according to the present embodiment, the slider control unit A3 can predict whether or not an overload will be applied to the lower die 23 from the upper die 21 based on the comparison result of the comparison unit A2 before the upper die 21 and the lower die 23 come into contact with each other. In addition, the slider control unit A3 can prevent an overload from being applied to the lower mold 23 from the upper mold 21 by controlling the slider moving mechanism 5 based on the prediction result. For example, before the object is processed by the mold 2, the slider control unit A3 predicts whether or not an overload will be applied to the lower mold 23 from the upper mold 21, and controls the slider moving mechanism 5 based on the prediction result, thereby preventing the lower mold 21 from being exposed to the lower mold. Die 23 applies an overload. When the upper mold 21 can be prevented from being overloaded with the lower mold 23, the durability of the mold 2 can be improved. Furthermore, since overloading of the press apparatus 1 can also be prevented, the durability of the press apparatus 1 can also be improved.

For example, the slider control unit A3 can predict whether or not a sticking (Japanese: スティック) state will occur based on the comparison result between the vertical distance d1 of the mold 2 and the remaining moving distance d2 of the slider 7 . In addition, the slider control unit A3 can prevent the occurrence of the sticking state by prohibiting the movement (for example, descending) of the slider 7 when the occurrence of the sticking state is predicted. Furthermore, in this embodiment, the sticking avoidance mechanism by hydraulic pressure need not be included, and the manufacturing cost of the press apparatus 1 can be reduced.

The sticking state refers to a state in which, for example, in the case where the slider 7 is located near the bottom dead center BD, the upper mold 21 (for example, the first protrusion 213 ) is bitten into the lower mold 23 (for example, the second protrusion 213 ) due to the overload protruding portion 233 ), it is difficult for the upper die 21 to be detached from the lower die 23 . When a sticking state occurs in the press apparatus 1, for example, in the slider moving mechanism 5, it becomes difficult to convert both the forward and reverse rotation of the rotation motion into the reciprocating motion, and it becomes difficult to move the slider 7.

Specifically, the comparison part A2 subtracts the distance d1 between the upper and lower sides of the mold 2 from the remaining moving distance d2 of the slider 7, and calculates the difference DF (=d2-d1) as a subtraction value. When the difference DF is larger than the threshold value TH, an overload may be applied to the lower mold 23 from the upper mold 21 in the vicinity of the bottom dead center BD of the slider 7 . That is, there is a possibility that the slider 7 descends excessively beyond the upper-lower distance d1 of the mold 2 , and an overload is applied to the lower mold 23 from the upper mold 21 . The threshold TH is a real number above zero. The threshold value TH represents the excess distance with respect to the position of the slider 7 in the vertically downward direction of the slider 7 when the vertical distance d1 is zero. The threshold TH is determined experimentally and/or empirically.

Therefore, when the difference DF obtained by subtracting the upper and lower distance d1 of the mold 2 from the remaining moving distance d2 of the slider 7 is greater than the threshold value TH, the slider control unit A3 prohibits the movement of the slider 7 . Therefore, according to the present embodiment, it is possible to effectively prevent an overload from being applied to the lower mold 23 from the upper mold 21 . For example, the occurrence of a sticking state can be effectively prevented.

Specifically, when the difference value DF is larger than the threshold value TH, the slider control unit A3 controls the slider moving mechanism 5 to prohibit the movement of the slider 7 .

For example, when the difference DF is larger than the threshold TH, the slider control unit A3 controls a clutch (not shown) disposed between the crankshaft 52 and the flywheel 53 to cut off the rotation from the flywheel 53 to the crankshaft 52 transmission of force. As a result, the movement of the slider 7 is prohibited.

In particular, when the difference DF is larger than the threshold value TH, the slider control unit A3 prohibits the movement of the slider 7 even when the operation instruction input unit 19 receives an input of the operation instruction.

On the other hand, when the difference DF is equal to or less than the threshold value TH, the slider control unit A3 allows the movement of the slider 7 .

Specifically, when the difference DF is equal to or smaller than the threshold value TH, when the operation instruction input unit 19 receives an input of an operation instruction of the press apparatus 1, the slider control unit A3 controls the slider moving mechanism 5 to drive the slider 7 . As a result, the slider 7 reciprocates in the vertical direction VD.

For example, when the difference DF is equal to or less than the threshold value TH, when the operation instruction input unit 19 receives an input of an operation instruction of the press apparatus 1, the slider control unit A3 controls the clutch disposed between the crankshaft 52 and the flywheel 53. (not shown) is controlled to transmit the rotational force from the flywheel 53 to the crankshaft 52 . As a result, the slider 7 is driven.

Furthermore, in the present embodiment, when the difference value DF is larger than the threshold value TH, the slider control unit A3 controls the display unit B2 to notify that the mold closing height is abnormal. Therefore, when the difference value DF is larger than the threshold value TH, the display unit B2 notifies that the mold closing height is abnormal. As a result, according to the present embodiment, the user can be prompted to adjust the mold closing height. In addition, by adjusting the mold closing height, it is possible to prevent an overload from being applied to the lower mold 23 from the upper mold 21 .

For example, the display part B2 directly or indirectly notifies that the mold closing height is abnormal. A direct notification is, for example, "The mold closing height is abnormal." or "The mold closing height is too small.". Indirect notifications are, for example, "Please adjust the mold closing height.", "There may be an overload from the upper mold to the lower mold." or "A sticking state may occur.".

Furthermore, in the present embodiment, as an example, the rotation detection unit 17 detects the crank angle after the position of the slider 7 in the vertical direction VD is adjusted in a state where the slider 7 is stopped and before the slider 7 reaches the bottom dead center BD. θs, the slider position calculation unit A1 calculates the remaining moving distance d2 of the slider 7 based on the crank angle θs, which is the detection result of the rotation detection unit 17 , and the distance detection unit 13 detects the upper and lower distance d1 of the mold 2 . In addition, after the position of the slider 7 in the vertical direction VD is adjusted in the state where the slider 7 is stopped and before the slider 7 reaches the bottom dead center BD, the distance d1 between the upper and lower sides of the mold 2 by the comparison part A2 and the distance between the upper and lower sides of the slider 7 are compared. The remaining moving distance d2 is compared, and the slider control unit A3 controls the slider moving mechanism 5 based on the comparison result of the comparison unit A2.

For example, when the position of the slider 7 in the vertical direction VD is adjusted by the closed mold height adjustment mechanism 9 in a state where the slider 7 is stationary, the user's operation error may lead to erroneous adjustment. Misadjustment of the position of the slider 7 may constitute the cause of applying an overload from the upper die 21 to the lower die 23 . Therefore, after adjusting the position of the slider 7 in the vertical direction VD and before the slider 7 reaches the bottom dead center BD, the slider control unit A3 controls the slider moving mechanism 5 based on the comparison result of the comparison unit A2, thereby effectively preventing the An overload is applied to the lower mold 23 from the upper mold 21 .

Furthermore, in the present embodiment, as an example, immediately after the die 2 is attached to the press apparatus 1 and before the slider 7 reaches the bottom dead center BD, the rotation detection unit 17 detects the crank angle θs, and the slider position calculation unit A1 The remaining movement distance d2 of the slider 7 is calculated based on the crank angle θs, which is the detection result of the rotation detection unit 17 , and the distance detection unit 13 detects the vertical distance d1 of the mold 2 . Further, immediately after the die 2 is attached to the press apparatus 1 and before the slider 7 reaches the bottom dead center BD, the comparison section A2 compares the distance d1 between the upper and lower sides of the die 2 and the remaining moving distance d2 of the slider 7, and slides the The slider control part A3 controls the slider moving mechanism 5 based on the comparison result of the comparison part A2.

For example, when the die 2 is erroneously attached to the press apparatus 1, or when the erroneous die 2 is attached to the press apparatus 1, an overload may be applied from the upper die 21 to the lower die 23. Therefore, the slider control unit A3 controls the slider moving mechanism 5 based on the comparison result of the comparison unit A2 immediately after the die 2 is attached to the punching device 1 and before the slider 7 reaches the bottom dead center BD, thereby effectively preventing from The upper die 21 applies an overload to the lower die 23 .

In addition, attaching the die 2 to the press apparatus 1 means attaching the upper die 21 to the slider 7 and attaching the lower die 23 to the support plate 11 .

Furthermore, in this embodiment, as shown in FIG. 1 , the first detected portion FD represents the lower end 213 a of the first protruding portion 213 . Moreover, the 2nd to-be-detected part SD shows the upper end 233a of the 2nd protrusion part 233. As shown in FIG. Therefore, the distance d1 between the upper and lower sides of the mold 2 detected by the distance detection unit 13 is the distance between the lower end 213 a of the first protrusion 213 of the upper mold 21 and the upper end 233 a of the second protrusion 233 of the lower mold 23 .

Therefore, in the present embodiment, the slider control part A3 can predict whether the first protrusion 213 of the upper mold 21 and the second protrusion 233 of the lower mold 23 come into contact with each other based on the comparison result of the comparison part A2 The portion 213 applies an overload to the second protruding portion 233 . In addition, the slider control unit A3 can prevent an overload from being applied to the second protruding portion 233 from the first protruding portion 213 by controlling the slider moving mechanism 5 based on the prediction result.

For example, the slider control section A3 can predict whether or not a sticking state caused by the first protrusion 213 biting into the second protrusion 233 will occur. In addition, the slider control unit A3 can prevent the occurrence of the sticking state by prohibiting the movement (for example, descending) of the slider 7 when the occurrence of the sticking state is predicted.

Next, the control method of the press apparatus 1 is demonstrated with reference to FIG.2 and FIG.3. FIG. 3 is a flowchart showing a control method of the press apparatus 1 . As shown in FIG. 3 , the control method includes steps S1 to S9. The computer program stored in the storage unit 153 of FIG. 2 causes the control device 15 (specifically, the control unit 151 ) to execute the processes of steps S1 to S9 .

As shown in FIG. 3, step S1 and step S3 are performed in parallel.

Specifically, first, in step S1 , the rotation detection unit 17 detects the crank angle θs in a state where the slider 7 is stopped at a position above the bottom dead center BD of the slider 7 . Then, the slider position calculation unit A1 acquires the crank angle θs from the rotation detection unit 17 .

Next, in step S2 , the slider position calculation unit A1 calculates the remaining moving distance d2 of the slider 7 based on the crank angle θs, which is the detection result of the rotation detection unit 17 .

On the other hand, in step S3, the distance detection part 13 detects the distance d1 between the upper and lower sides of the mold 2 with the slider 7 stopped at a position above the bottom dead center BD of the slider 7. Then, the comparison unit A2 acquires the distance d1 between the upper and lower sides of the mold 2 from the distance detection unit 13 .

Next, in step S4, the comparison part A2 subtracts the distance d1 between the upper and lower sides of the mold 2 from the remaining moving distance d2 of the slider 7, and calculates the difference DF.

Next, in step S5, the comparison part A2 judges whether the difference value DF is larger than the threshold value TH. That is, the comparison part A2 compares the distance d1 between the upper and lower sides of the mold 2 and the remaining moving distance d2 of the slider 7 .

When it is determined in step S5 that the difference DF is larger than the threshold value TH (YES), the process proceeds to step S7.

Next, in step S7 , the slider control unit A3 controls the slider moving mechanism 5 to prohibit the movement of the slider 7 . That is, the slider control unit A3 controls the slider moving mechanism 5 based on the comparison result of the comparison unit A2 to prohibit the movement of the slider 7 .

Next, in step S8 , the slider control unit A3 controls the display unit B2 to notify that the mold closing height is abnormal. As a result, the display part B2 notifies that the mold closing height is abnormal.

Next, in step S9, the closed mold height adjustment instruction part A4 instructs the closed mold height adjustment mechanism 9 to adjust the closed mold height based on the closed mold height adjustment amount received by the operation part B1. As a result, the closed mold height adjustment mechanism 9 adjusts the closed mold height by the instructed closed mold height adjustment amount. Next, the process proceeds to steps S1 and S3.

On the other hand, when it is determined in step S5 that the difference DF is equal to or smaller than the threshold value TH (NO), the process proceeds to step S6.

Next, in step S6 , the slider control unit A3 controls the slider moving mechanism 5 to allow the movement of the slider 7 . That is, the slider control unit A3 controls the slider moving mechanism 5 based on the comparison result of the comparison unit A2 to allow the movement of the slider 7 . Then, the processing ends.

As described above with reference to FIG. 3 , according to the present embodiment, when the difference DF is larger than the threshold value TH, the movement of the slider 7 is prohibited, thereby preventing an overload from being applied to the lower mold 23 from the upper mold 21 .

In addition, step S3 may be performed after step S1, or step S1 may be performed after step S3. That is, the order of step S1 and step S3 is not particularly limited.

(Variation)

4 , a press apparatus 1A according to a modification of the embodiment of the present invention will be described. The press apparatus 1A of the modified example differs from the press apparatus 1 ( FIG. 1 ) in which the distance detection unit 13 is separated from the die 2 mainly in that the distance detection unit 13A is fixed to the die 2 . Hereinafter, a modification will be described mainly on the differences from the embodiment described with reference to FIG. 1 .

FIG. 4 is a schematic diagram showing the configuration of a press apparatus 1A according to a modification of the embodiment of the present invention. As shown in FIG. 4 , the distance detection unit 13A is fixed to the mold 2 . For example, the distance detection portion 13A is embedded in the mold 2 . And the distance detection part 13A detects the distance d1A between the upper and lower sides of the mold 2 . According to the modification, the user can fix the distance detection unit 13A at a desired position of the mold 2 . Furthermore, in a modification, for example, a relatively inexpensive distance detection unit 13A can be used. The distance detection unit 13A is, for example, a laser displacement sensor, an LED (Light Emitting Diode) displacement sensor, an eddy-current displacement sensor, or an ultrasonic displacement sensor.

In the example of FIG. 4 , the distance detection unit 13A is fixed to the upper mold 21 . Specifically, the distance detection unit 13A is fixed to the upper mold body 211 . For example, the distance detection portion 13A is embedded in the upper mold body 211 .

In addition, the distance detection part 13A may be fixed to the lower mold|type 23. Specifically, the distance detection unit 13A is fixed to the lower mold body 231 . For example, the distance detection portion 13A is embedded in the lower mold body 231 .

Furthermore, when the distance detection unit 13A includes two elements, one element may be fixed to the upper mold 21 (for example, the upper mold main body 211 ), and the other element may be fixed to the lower mold 23 (for example, the lower mold main body 231 ). .

Here, in the modification, as an example, the first detected portion FDA indicates the specific portion 211 b of the upper mold body 211 , and the second detected portion SDA indicates the specific portion 231 b of the lower mold body 231 . The vertical distance d1A of the mold 2 is the distance in the vertical direction VD between the first detection site FDA and the second detection site SDA.

In the example of FIG. 4 , the first detected part FDA is located at the lower part 211 a of the upper mold body 211 . Moreover, the 1st to-be-detected site|part FDA shows the site|part different from the site|part which contacts the object (workpiece) in the upper mold|type main body 211. On the other hand, the second detection site SDA is located in the upper part 231 a of the lower mold main body 231 . In addition, the second detected site SDA represents a site different from a site in contact with the object (workpiece) in the lower mold body 231 . Moreover, in the example of FIG. 4, the 1st to-be-detected part FDA and the 2nd to-be-detected part SDA oppose in the vertical direction VD.

Moreover, the comparison part A2 shown in FIG. 2 compares the distance d1A between the upper and lower sides of the mold 2 and the remaining moving distance d2 of the slider 7 . And the slider control part A3 controls the slider moving mechanism 5 based on the comparison result of the comparison part A2. As a result, in the modified example, it is possible to prevent an overload from being applied to the lower mold 23 from the upper mold 21 as in the embodiment described with reference to FIGS. 1 and 2 .

Specifically, the comparison part A2 subtracts the distance d1A between the upper and lower sides of the mold 2 from the remaining moving distance d2 of the slider 7, and calculates the difference value DFA as the subtracted value. In this case, the difference value DFA represents a negative value. Therefore, the larger the difference DFA, that is, the smaller the absolute value of the difference DFA, the closer the slider 7 is to the support plate 11 at the bottom dead center BD of the slider 7 . As a result, an overload may be applied to the lower mold 23 from the upper mold 21 in the vicinity of the bottom dead center BD of the slider 7 .

Therefore, the comparison part A2 judges whether the difference value DFA is larger than the threshold value THA. The threshold value THA represents the distance in the vertical direction VD between the first detection site FDA and the second detection site SDA when an allowable limit load is applied from the upper mold 21 to the lower mold 23 . The threshold THA is a real number less than zero. The threshold THA is determined experimentally and/or empirically.

Then, when the difference value DFA is larger than the threshold value THA, the slider control unit A3 controls the slider moving mechanism 5 to prohibit the movement of the slider 7 . As a result, it is possible to effectively prevent an overload from being applied to the lower mold 23 from the upper mold 21 . In addition, the operation|movement of the slider control part A3 of the modification is the same as the operation|movement of the slider control part A3 of embodiment demonstrated with reference to FIG. 1 and FIG. 2. FIG.

The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above-described embodiments, and can be implemented in various forms without departing from the gist of the present invention. In addition, a plurality of constituent elements disclosed in the above-described embodiments can be appropriately changed. For example, one of all the components shown in a certain embodiment may be added to the components of another embodiment, or some of all the components shown in a certain embodiment may be added. Removed from implementation.

In addition, in order to facilitate understanding of the invention, the drawings schematically show the main body of each component, and the thickness, length, number, interval, etc. of each component shown in the drawings may be different from actual ones for convenience of drawing. In addition, the structure of each component shown in the said embodiment is an example and is not limited, It is needless to say that various changes can be made in the range which does not deviate substantially from the effect of this invention.

(1) In the embodiment described with reference to FIG. 1 , the first detected portion FD represents the lower end 213 a of the first protruding portion 213 , and the second detected portion SD represents the upper end 233 a of the second protruding portion 233 . However, as long as the first detected site FD is located on the upper die 21 and the second detected site SD is located on the lower die 23, the positions of the first detected site FD and the second detected site SD are not particularly limited. In this case, for example, the first detected portion FD and the second detected portion SD are located on a straight line in the vertical direction VD.

For example, the first detected site FD may be a site different from the lower end 213 a in the first protrusion 213 , or may be a site of the upper mold body 211 . When the first detection site FD is a site of the upper mold body 211 , the first detection site FD is a site of the upper mold body 211 that is different from the site that contacts the object (workpiece).

For example, the second detected site SD may be a site different from the upper end 233 a in the second protrusion 233 , or may be a site of the lower mold body 231 . When the second detected site SD is a site of the lower mold body 231 , the second detected site SD is a site different from the site of the lower mold body 231 that is in contact with the object (workpiece).

As an example, as shown in FIG. 1 , a case where the first detection site FDA is a specific site on the side of the upper mold body 211 and the second detection site SDA is a specific site on the side surface of the lower mold body 231 will be described. The first detected portion FDA and the second detected portion SDA may include labels, respectively. The markings are, for example, paints or reflective materials of a specific color. Then, the distance detection unit 13 detects the distance d1A between the upper and lower sides of the mold 2 . The vertical distance d1A is the distance in the vertical direction VD between the first detection site FDA and the second detection site SDA. In this example, the processing of the comparison unit A2 and the slider control unit A3 shown in FIG. 2 is the same as the processing of the comparison unit A2 and the slider control unit A3 of the modification example described with reference to FIG. 4 .

(2) In the modification example described with reference to FIG. 4 , the first detected portion FDA indicates the specific portion 211 b of the upper mold body 211 , and the second detected portion SDA indicates the specific portion 231 b of the lower mold body 231 . However, as long as the first detection site FDA is located on the upper mold 21 and the second detection site SDA is located on the lower mold 23, the positions of the first detection site FDA and the second detection site SDA are not particularly limited. In this case, for example, the first detection site FDA and the second detection site SDA are located on a straight line in the vertical direction VD.

For example, the first detection site FDA may be a site different from the specific site 211b in the upper mold body 211, or may be a site (eg, the lower end 213a) in the first protrusion 213. For example, the second detected site SDA may be a site different from the specific site 231b in the lower mold body 231, or may be a site within the second protrusion 233 (eg, the upper end 233a).

As an example, as shown in FIG. 4 , the first detected portion FD is the lower end 213 a of the first protruding portion 213 , and the second detected portion SD is the upper end 233 a of the second protruding portion 233 . In this case, the distance detection portion 13A is fixed to, for example, the first protrusion portion 213 or the second protrusion portion 233 . Then, the distance detection unit 13A detects the distance d1 between the upper and lower sides of the mold 2 . The vertical distance d1 is the distance in the vertical direction VD between the first detected site FD and the second detected site SD. In this example, the processing of the comparison unit A2 and the slider control unit A3 shown in FIG. 2 is the same as the processing of the comparison unit A2 and the slider control unit A3 of the embodiment described with reference to FIGS. 1 and 2 . In addition, when the distance detection part 13A includes two elements, one element may be fixed to the first protrusion part 213 and the other element may be fixed to the second protrusion part 233 .

(3) In the embodiment and modification described with reference to FIGS. 1 and 4 , the slider moving mechanism 5 includes a clutch (not shown), a flywheel 53 , a belt 54 , and a pulley 55 , but as long as the rotational motion can be converted into The structure of the reciprocating motion and the slider moving mechanism 5 is not particularly limited.

For example, in the slider moving mechanism 5 , the motor 56 may be directly connected to the crankshaft 52 . Specifically, the motor 56 may be directly connected to the crankshaft 52 via a gear (not shown). In this case, the motor 56 is a servo motor. And in this case, the rotation detection part 17 is attached to the rotation shaft of the motor 56, and detects the rotation angle of the motor 56. As shown in FIG. Further, the rotation detection unit 17 outputs a detection signal indicating the rotation angle of the motor 56 to the control unit 151 . Then, the control unit 151 calculates the crank angle θ based on the rotation angle of the motor 56 .

In this example, the slider control unit A3 of FIG. 2 controls the motor 56 to switch between transmission and cutoff of the rotational force from the motor 56 to the crankshaft 52 .

For example, when the difference values DF and DFA are larger than the threshold values TH and THA, the slider control unit A3 stops the motor 56 and interrupts the transmission of the rotational force from the motor 56 to the crankshaft 52 . As a result, the movement of the slider 7 is prohibited. On the other hand, for example, when the difference values DF and DFA are equal to or smaller than the threshold values TH and THA, when the operation instruction input unit 19 receives an input of an operation instruction of the press apparatus 1, the slider control unit A3 drives the motor 56, Rotational force is transmitted from the motor 56 to the crankshaft 52 . As a result, the slider 7 is driven, and the slider 7 reciprocates in the vertical direction VD.

Furthermore, in FIGS. 1 and 4 , the slider moving mechanism 5 employs a crank mechanism. However, the slider moving mechanism 5 can move the slider 7 in the vertical direction VD by, for example, a link mechanism. That is, the press apparatus 1 can also be implemented as a link press. Further, the slider moving mechanism 5 can move the slider 7 in the vertical direction VD by, for example, a toggle mechanism. That is, the press apparatus 1 can also implement a toggle press.

(4) In the embodiment and modification described with reference to FIGS. 1 and 4 , when the difference values DF and DFA are larger than the threshold values TH and THA, the display unit B2 notifies that the mold closing height is abnormal. However, in this case, the abnormality of the closed mold height may be notified by a sound output unit such as a speaker. In this case, the sound output unit corresponds to an example of the "notification unit".

The present invention can be used, for example, in punching devices, control devices, and computer programs.

Claims (9)

1. A stamping device, comprising: a slider, which can be installed on an upper mold of a mold of the object to be processed, and can move in a vertical direction; a slider moving mechanism, which converts the rotary motion into reciprocating motion and moves the slider along the vertical direction; a rotation detection part, the rotation detection part detects the rotation angle of the rotation movement; a support plate, which can be installed by the lower mold of the mold; a slider position calculation part, the slider position calculation part calculates the remaining moving distance of the slider based on the detection result of the rotation detection part; a comparison part that compares the distance between the first detected part of the upper mold and the second detected part of the lower mold, that is, the upper-lower distance and the remaining moving distance; and a slider control unit that controls the slider moving mechanism based on the comparison result of the comparison unit, It is characterized by, The rotation detection unit detects the rotation angle in a state where the slider is stopped at a position above the bottom dead center of the slider, The distance between the top and bottom indicates the distance detected in the state where the slider is stopped at the position above the bottom dead center of the slider, The remaining movement distance of the slider indicates the distance from the position in the vertical direction of the slider when the vertical distance is detected to the bottom dead center of the slider. 2. The punching device according to claim 1, characterized in that, The upper mold has a first protrusion protruding vertically downward, The lower mold has a second protrusion protruding vertically upward, The first protruding portion and the second protruding portion are opposite to each other in the vertical direction, The lower end of the first protruding portion is in contact with the upper end of the second protruding portion by the sliding member descending from the top dead center, The first detected portion represents the lower end of the first protruding portion, The second detected portion represents the upper end of the second protrusion. 3. The punching device according to claim 1 or 2, characterized in that, After the vertical position of the slider is adjusted in a state where the slider is stopped and before the slider reaches the bottom dead center, the comparison unit compares the vertical distance and the remaining moving distance. The slider control section controls the slider moving mechanism based on the comparison result of the comparison section. 4. The punching device according to any one of claims 1 to 3, characterized in that: The slider control unit prohibits the movement of the slider when the difference obtained by subtracting the upper-lower distance from the remaining movement distance is larger than a threshold value. 5. The punching device according to claim 4, characterized in that: It further includes a notification unit that notifies that the mold closing height is abnormal when the difference value is larger than the threshold value. 6. The punching device according to any one of claims 1 to 5, characterized in that: Also includes a distance detection part, the distance detection part detects the distance between the upper and lower, The distance detection portion is fixed at a position separated from the mold. 7. The punching device according to any one of claims 1 to 5, characterized in that: The distance between the upper and lower sides is detected by a distance detection unit fixed to the mold. 8. A control device for controlling a punching device, the punching device comprising: a slider, which can be installed on an upper mold of a mold of the object to be processed, and can move in a vertical direction; a slider moving mechanism, which converts the rotary motion into reciprocating motion and moves the slider along the vertical direction; a rotation detection unit that detects a rotation angle of the rotational motion; and a support plate, which can be installed by the lower die of the die, The control device includes: a slider position calculation part, the slider position calculation part calculates the remaining moving distance of the slider based on the detection result of the rotation detection part; a comparison part that compares the distance between the first detected part of the upper mold and the second detected part of the lower mold, that is, the upper-lower distance and the remaining moving distance; and a slider control unit that controls the slider moving mechanism based on the comparison result of the comparison unit, It is characterized by, The rotation angle represents an angle detected in a state where the slider is stopped at a position above the bottom dead center of the slider, The distance between the top and bottom indicates the distance detected in the state where the slider is stopped at the position above the bottom dead center of the slider, The remaining movement distance of the slider indicates the distance from the position in the vertical direction of the slider when the vertical distance is detected to the bottom dead center of the slider. 9. A computer program for attaching a slider to an upper mold including a mold for processing an object and moving in the vertical direction, converting rotational motion into reciprocating motion, and causing the slider to move in the vertical direction The moving slider moving mechanism, the rotation detection part that detects the rotation angle of the rotational movement, and the computer capable of controlling the punching device of the support plate mounted on the lower die of the die perform the following steps: Calculate the remaining moving distance of the slider based on the detection result of the rotation detection part; comparing the distance between the first detected portion of the upper mold and the second detected portion of the lower mold, that is, the upper-lower distance and the remaining moving distance; and The slider moving mechanism is controlled based on the comparison result of the upper and lower distance and the remaining moving distance, It is characterized by, The rotation angle represents an angle detected in a state where the slider is stopped at a position above the bottom dead center of the slider, The distance between the top and bottom indicates the distance detected in the state where the slider is stopped at the position above the bottom dead center of the slider, The remaining movement distance of the slider indicates the distance from the position in the vertical direction of the slider when the vertical distance is detected to the bottom dead center of the slider.

Images