JP2022181847A - electric press machine - Google Patents

Abstract

To provide an electric press machine which can machine a thin film with high accuracy.SOLUTION: An electric press machine includes: a bed which serves as a base; a support which is supported by the bed; a slide 11 which moves with respect to the support; a plurality of drive sections which drive the slide 11; a plurality of power transmission sections 13 which rotatably connect the slide 11 in an arbitrary direction and transmit driving force generated by the drive sections to the slide 11; a plurality of position detection sections 14 which detect a position of the slide 11 corresponding to the plurality of drive sections; and a control section which does not drive at least one drive section of the plurality of drive sections and drives the remaining drive sections so as to correct a position of a tip of a blade section so that the slide 11 moves to each predetermined position on the basis of at least a difference of the position of the slide 11 detected by the position detection sections 14.SELECTED DRAWING: Figure 8

Description

The present invention relates to an electric press machine for processing thin films.

Conventionally, there has been disclosed a technique of forming through-holes in a film substrate using a press machine using a die having a punch and a die as cutting edges (see Patent Document 1).

JP 2011-40485 A

However, the conventional press machine cannot finely adjust the parallelism of the slide, and cannot process the multilayer film with high accuracy. For example, FIG. 11(a) shows a longitudinal section of a mold part. Conventionally, when processing a multilayer film, as shown in FIG. 11(a), there have been cases where the parallelism of the slide cannot be maintained and the upper mold part 5 is not parallel. FIG. 11(b) shows the film F after processing as viewed from above. A straight line indicates a portion where the multilayer film F is completely cut, and a dashed line indicates a portion where the multilayer film F is cut only halfway. In this way, there is a risk that the depth of the cut will vary.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electric press machine capable of processing a thin film with high accuracy.

The electric press machine according to the present invention includes:
a bed as a base,
a pillar supported by the bed;
a slide that moves relative to the post;
an upper mold part installed on the slide;
a lower mold part installed on the bed so as to face the lower part of the upper mold part;
a plurality of driving units for driving the slide;
a plurality of power transmission units that connect the slide so as to be rotatable in any direction and transmit the driving force generated by the drive unit to the slide;
a plurality of position detection units for detecting positions of the slide corresponding to the plurality of drive units;
a control unit capable of separately driving the plurality of drive units so that the slide moves to a predetermined position based on at least the position of the slide detected by the position detection unit;
with
The upper mold part is provided with a blade part protruding downward,
The control section does not drive at least one of the plurality of drive sections and drives the remaining drive sections to correct the position of the tip of the blade.

According to the electric press machine of the present invention, it is possible to process a thin film with high accuracy.

1 shows an embodiment of an electric press machine. 2 shows an outline of a slide mechanism of the electric press machine of the present embodiment; 4 shows a horizontal cross section including the slide of the electric press machine of the present embodiment. 2 shows a die portion of the electric press machine of the present embodiment. 1 shows a system configuration of an electric press machine of this embodiment. 4 shows a flowchart of position correction during teaching processing of the electric press machine of the first embodiment. 4 shows a processing state of a multilayer film by the electric press machine of the first embodiment. 4 shows a sliding state of the electric press machine of the first embodiment; FIG. 10 is a flowchart of position correction during teaching processing of the electric press machine of the second embodiment; FIG. A method of actually measuring the distance between the upper die and the lower die of the electric press machine of the second embodiment is shown. The state of processing in a conventional press machine is shown.

FIG. 1 shows an embodiment of an electric press machine P. As shown in FIG. FIG. 2 shows an outline of the slide mechanism of the electric press machine P of this embodiment. FIG. 3 shows a horizontal cross section including the slide of the electric press machine of this embodiment. In addition, the strut 2 and the crown 3 are omitted in FIG.

The electric press machine P includes a bed 1, a column 2, a crown 3, a scale column 4, a slide 11, a motor 12 as a drive section, a ball screw 13 as a power transmission section, and a position detection section 14.

The bed 1 is a member that serves as a base for placing the electric press machine P on the ground. The column 2 is a column supported by the bed 1 and extending upward. There are four pillars 2 in this embodiment, which are installed near the four corners of the bed 1, respectively. The crown 3 is mounted on the strut 2 and mounts the motor 12 thereon. A bed 1, a column 2 and a crown 3 form a frame of an electric press machine. In addition, the number of struts 2 is not limited to four, and at least two or more should be provided so as to support the crown 3 . Also, the shape is not limited to a columnar shape, and a plate shape may be used.

A slide 11 is movably attached to the column 2 . In this embodiment, four corners of the slide 11 are movably installed on the post 2 . The slide 11 forms a slight gap or the like with respect to the column 2 and has a structure that can be tilted.

A motor 12 is mounted on the crown 3 and drives a ball screw 13 as a power transmission section. The ball screw 13, as shown in FIG. 2, has a screw shaft 13a and a connecting portion 13b. The screw shaft 13 a passes through the crown 3 and is connected to the output shaft of the motor 12 . The connecting portion 13b is a ball joint or the like. Therefore, the ball screw 13 attaches the slide 11 rotatably in any direction and transmits the driving force generated by the motor 12 to the slide 11 . As a result, motor 12 drives slide 11 .

In this embodiment, there are four motors 12 corresponding to the four corners of the crown 3 and the slide 11, respectively. The four motors 12 and ball screws 13 operate independently. Note that the number of motors 12 is not limited to four, and at least two or more may be provided.

The position detection unit 14 is preferably a linear scale or the like that reads the scale column 4 and measures the height at which the slide 11 is positioned relative to the bed 1 . In this embodiment, there are four of them corresponding to the four corners of the slide 11 . At least two position detection units 14 are required.

The scale post 4 is vertically mounted on the bed 1 on the one hand and on the crown 3 on the other hand. In this embodiment, they are attached to the outside near the four corners of the slide 11 .

The upper mold part 5 is installed on the slide 11 and moves together with the slide 11 . The lower mold part 6 is installed on the bed 1 . The upper die part 5 and the lower die part 6 are arranged to face each other, and the material is processed by being sandwiched between the upper die part 5 and the lower die part 6 .

As shown in FIG. 3, the ball screw 13 of the electric press machine P of the present embodiment has a first ball screw 131 on the upper right of the paper surface, and a second ball screw 132, a third ball screw 133, and a fourth ball screw 134 counterclockwise. and As with the ball screw 13, the motor 12 and the position detection unit 14 correspond to the first to the fourth.

FIG. 4 shows the die portion of the electric press machine P of this embodiment. FIG. 4(a) shows a cross section of the mold part viewed from the side, and FIG. 4(b) shows a cross section taken along line IVb-IVb of FIG. 4(a).

A blade portion 51 projecting downward is installed in the upper mold portion 5 . A Thomson blade, an etching blade, or the like may be used as the blade portion 51 . The electric press machine P of the present embodiment can process the multilayer film F by die-cutting or cutting with the blade portion 51 . The multilayer film F may have a structure in which films, adhesives, copper foils, separators, or the like are laminated in multiple layers. The thickness of each layer of the multilayer film F may be 1 mm or less. In the electric press machine P of this embodiment, the positions of the upper mold portion 5 and the blade portion 51 can be adjusted in units of 1 μm. Therefore, if the user sets the layer to be processed of the multilayer film F, the set layer can be processed.

FIG. 5 shows the system configuration of the electric press machine P of this embodiment.

The electric press machine P has an operation panel 9 operated by a user, and a control for driving and controlling first motors 121 to 4th motors 121 to 124 for the first to fourth axes according to commands from the operation panel 9. and a storage unit 8 for pre-storing information about driving energy for each stage to be supplied to each of the first to fourth motors 121 to 124 .

Further, the first to fourth servo amplifiers 161 to 4th servo amplifiers 161 to 164 for driving and controlling the first to fourth motors 121 to 124 in response to signals from the control unit 7 correspond to the respective axes, and the first to fourth motors 121 to 124 It has a first encoder 151 to a fourth encoder 154 for detecting the number of rotations of the motor 124, and a first position detector 141 to a fourth position detector 144 for detecting the position of each shaft.

The control unit 7 includes a command unit 7a that sends command values to the first servo amplifier 161 to the fourth servo amplifier 164 corresponding to each axis, and a command value based on the detection values of the first position detection unit 141 to the fourth position detection unit 144. and a computing unit 7b that computes The operation panel 9, the control unit 7, or the storage unit 8 may be installed separately from the electric press machine P using a personal computer, a portable terminal, or the like.

Next, position control of the electric press machine of this embodiment will be described. Here, a case where the electric press machine P has four axes will be described.

The electric press machine P of the present embodiment automatically repeats the operation of pressing the molded product during the actual press working period in which the molded product is actually produced. The slide 11 can be brought into a horizontal state or a predetermined inclined state with high accuracy at each stage during the press working operation during the actual press working period.

That is, the electric press machine P of this embodiment has a teaching period prior to the actual pressing period. In this embodiment, the case where the slide 11 of the electric press machine P is controlled to be horizontal will be described.

FIG. 6 shows a flowchart of position correction during the teaching process of the electric press machine P of the first embodiment. FIG. 7 shows how the multilayer film is processed by the electric press machine P of the first embodiment. FIG. 8 shows the state of the slide 11 of the electric press machine P of the first embodiment.

FIG. 7(a) shows a state in which the blade portion 51 of the electric press machine P of the first embodiment has cut the multilayer film F up to the second layer F2. FIG. 7(b) shows a state in which the blade portion 51 of the electric press machine P of the first embodiment has cut the multilayer film F up to the fourth layer F4. FIG. 7(c) shows a state in which the blade portion 51 of the electric press machine P of the first embodiment has cut the multilayer film F up to the sixth layer F6.

FIG. 8(a) shows the normal state of the slide 11 of the electric press machine P of the first embodiment. FIG. 8(b) shows the corrected state of the slide 11 of the electric press machine P of the first embodiment.

First, in step 1, a material for measurement is set in the electric press machine P (ST1). The measurement material may be a film material, a multilayer film F as shown in FIG. 4, or other resin material. The thickness of one layer of the film may be 1 μm or more.

Subsequently, in step 2, the measurement material set in the electric press machine P in step 1 is processed (ST2). Machining is performed by lowering all four-axis motors 12 to preset positions. The electric press machine P of this embodiment is set so that the slide 11 moves in parallel.

Next, in step 3, the processing state of the measurement material processed in step 2 is confirmed (ST3). For example, when the material for measurement is a single-layer film, the user finds that the upper mold section 5 is tilted from the unprocessed state where the blade section 51 does not reach, and obtains the tilt amount by visual observation and experience. When the material for measurement is a multi-layer film, as shown in FIG. 8, the layer reached by the blade 51 is different, so the user obtains the tilt amount from the position of the blade 51 and the layer reached. Here, the tilt amount is the vertical height difference Δh of the blade portion 51 at the correction target position shown in FIG. 9A.

The blade portion 51 of this embodiment has a shape as shown in FIG. 4(b). As shown in FIG. 8(a), when this blade portion 51 is attached to the inclined upper mold portion 5, there is a difference Δh in the vertical height of the blade portion 51 in the horizontal direction of the paper surface. That is, the cross section including the axes of the first ball screw 131 and the second ball screw 132 or the cross section including the axes of the third ball screw 133 and the fourth ball screw 134 is inclined.

In the present embodiment, the case of inclination in the lateral direction of the paper surface is used as an example, but the longitudinal direction of the paper surface, that is, the cross section including the axes of the first ball screw 131 and the fourth ball screw 134 or the second ball screw 132 and the 3 A cross section including the axis of the ball screw 133 may be inclined. In addition, when there is an inclination in the front-rear direction and the left-right direction of the paper surface, that is, in a cross section including the axes of the first ball screw 131 and the third ball screw 133 or in a cross section including the axes of the second ball screw 132 and the fourth ball screw 134. It's okay.

Next, in step 4, the calculator 7b of the electric press machine P calculates the parallelism correction axis and the correction amount (ST4). The correction amount ΔH of the slide 11 shown in FIG. It is calculated by presetting the lever ratio with the interval L of the position detection unit 14 in the direction.

For example, the user inputs the distance between the blades 51 in the direction in which the tips of the blades 51 are inclined and the difference in the vertical position of the tips of the blades 51 to the operation panel 9 . Then, the calculation unit 7b of the control unit 7 calculates the correction amount of the slide 11 from the interval between the blades 51 in the direction in which the tips of the blades 51 are inclined and the difference in the vertical position of the tips of the blades 51. do.

The correction axis in this embodiment is the axis of the ball screw on the side where the blade portion 51 is positioned downward. For example, in the example shown in FIG. 8A, since the blade portion 51 on the left side of the paper surface is located downward, the shaft of the ball screw on the left side of the paper surface is used as the correction axis.

Next, in step 5, it is determined whether the tilt function of the control unit 7 of the electric press machine P is ON or OFF (ST5). If the result calculated in step 4 is a value that does not require correction, the tilt function is turned off and the control ends. ON/OFF of the tilt function may be operated by the user through the operation panel 9, or may be automatically switched according to the value calculated in step 4.

If the tilt function is ON in step 5, a correction axis is selected in step 6 (ST6). In the case of the present embodiment, at least one drive unit motor 12 of the plurality of motors 12 is not driven, and the remaining motors 12 are driven to correct the position of the tip of the blade portion 51 . For example, in step 4, the left side of the paper, that is, the axes of the second ball screw 132 and the third ball screw 133 are calculated to be raised, so the axes of the second ball screw 132 and the third ball screw 133 are selected.

Next, in step 7, the correction axis is moved up and down (ST7). In this embodiment, as shown in FIG. 8B, the second ball screw of the slide 11 is driven by driving the second motor 122 and the third motor 123 without driving the first motor 121 and the fourth motor 124 . 132 and the third ball screw 133 are increased by the correction amount ΔH calculated in step 4, and the tip of the blade portion 51 is corrected so as to be horizontal.

As described above, the electric press machine P of the present embodiment does not drive at least one of the plurality of drive units, and drives the remaining drive units to correct the position of the tip of the blade. , the film can be processed with high accuracy.

FIG. 9 shows a flowchart of position correction during the teaching process of the electric press machine P of the second embodiment. FIG. 10 shows a method of actually measuring the distance between the upper die 5 and the lower die 6 of the electric press machine P of the second embodiment.

In the position correction of the electric press machine P of the second embodiment, in step 11, the distance between the upper die 5 and the lower die 6 is measured by a measuring member 65 such as a dial gauge (ST11). It is preferable to measure the distance between the upper die 5 and the lower die 6 at four corners corresponding to the first ball screw 131 to the fourth ball screw 134 .

Next, in step 12, the calculator 7b of the electric press machine P calculates the parallelism correction axis and the correction amount (ST12). The distance l between the blade portions 51 to be corrected, which is input from the operation unit 9 and stored in the storage unit 8 in advance, and the vertical position difference Δh of the blade portions 51 to be corrected, which is obtained in step 11, are shown in FIG. The correction amount ΔH of the slide 11 shown in 9 is calculated by setting in advance the lever ratio to the interval L of the position detection unit 14 in the target direction.

For example, the user inputs the distance between the blades 51 in the direction in which the tips of the blades 51 are inclined to the operation panel 9 . Further, the difference in the vertical position of the tip of the blade portion 51 measured by the measuring member 65 in step 11 is input to the control portion 7 . Then, the calculation unit 7b of the control unit 7 calculates the correction amount of the slide 11 from the interval between the blades 51 in the direction in which the tips of the blades 51 are inclined and the difference in the vertical position of the tips of the blades 51. do.

Note that Steps 13 to 16 of the second embodiment are the same as Steps 5 to 8 of the first embodiment, so description thereof will be omitted.

During the actual press working period, driving energy is supplied to each of the motors 121 to 124 based on the information stored in the storage unit 8 at each stage during the progress of each shot during press working. . If the position of the slide 11 is different from the position measured by the position detection units 141 to 144 and taken in during the teaching process, the calculation unit 7b calculates a command value to be corrected, and the command unit 7a corresponds to each axis. The command value is commanded to the servo amplifiers 161-164. In this embodiment, since such control is performed, the slide 11 can be placed in a horizontal state or a predetermined tilted state with high accuracy even in each stage of the press working operation.

In the first and second embodiments, since the right side of the paper is high, the first ball screw 131 and the fourth ball screw 134 shown in FIG. 3 are fixed, and the second ball screw 132 and the third ball screw 133 are raised. rice field. The electric press machine P of the present embodiment is not limited to this, and at least one ball screw may be fixed and other ball screws may be driven.

For example, only the first ball screw 131 may be fixed, and the second ball screw 132, the third ball screw 133 and the fourth ball screw 134 may be driven. Alternatively, the first ball screw 131, the second ball screw 132, and the third ball screw 133 may be fixed, and only the fourth ball screw 134 may be driven.

As described above, according to the electric press machine P of the present embodiment, the bed 1 serving as a base, the column 2 supported by the bed 1, the slide 11 that moves relative to the column 2, and the An upper mold part 5, a lower mold part 6 installed on the bed 1 facing the lower part of the upper mold part 5, a plurality of driving parts 12 for driving the slide 11, and the slide 11 being rotatable in any direction. a plurality of power transmission units 13 connected to each other and transmitting the driving force generated by the drive unit 12 to the slide 11; a plurality of position detection units 14 corresponding to the plurality of drive units 12 and detecting the position of the slide 11; a control unit 7 capable of separately driving the plurality of drive units 12 so that the slide 11 moves to a predetermined position based on the position of the slide 11 detected by the position detection unit 14; , the upper mold part 6 is provided with a blade protruding downward, and the control part 7 does not drive at least one of the plurality of driving parts 12 and drives the remaining driving parts 12 to form the blades. The position of the tip of the portion 511 is corrected. Therefore, the film can be processed with high precision.

Further, according to the electric press machine P of the present embodiment, the control section 7 corrects the tip of the blade section 51 so as to be horizontal. Therefore, the film can be processed into horizontal layers with high accuracy.

Further, according to the electric press machine P of the present embodiment, the control unit 7 controls the drive unit so as to raise the portion of the blade portion 51 below the position where the predetermined horizontal state or inclined state is formed. 12 is activated. Therefore, it is possible to prevent the tip of the blade portion 51 from colliding with the lower die portion 6 .

Further, according to the electric press machine P of the present embodiment, the operation panel for inputting the interval between the blades 51 in the direction in which the tips of the blades 51 are inclined and the difference in the vertical position of the tips of the blades 51 9, the control unit 7 calculates the correction amount of the slide 11 from the distance between the blades 51 in the direction in which the tips of the blades 51 are inclined and the difference in the vertical position of the tips of the blades 51. It has a calculation unit 7b. Therefore, the film can be processed with higher precision.

Further, according to the electric press machine P of the present embodiment, the difference between the operation panel 9 for inputting the interval of the blade portion 51 in the direction in which the tip of the blade portion 51 is inclined and the position of the tip of the blade portion 51 in the vertical direction and a measuring member 65 for measuring the distance between the blades 51 in the direction in which the tips of the blades 51 are inclined, and the difference in the vertical position of the tips of the blades 51. 11 has a calculation unit 7b for calculating the correction amount. Therefore, the film can be processed with higher precision.

Although the electric press machine P has been described above based on several embodiments, the present invention is not limited to these embodiments, and various combinations and modifications are possible.

DESCRIPTION OF SYMBOLS 1... Bed (frame body), 2... Support|pillar (frame body), 3... Crown (frame body), 4... Scale column, 5... Upper die part, 51... Blade part, 6... Lower die part, 7... Control part , 8... Storage unit, 9... Operation unit, 11... Slide, 12... Motor (drive unit), 13... Ball screw (power transmission unit), 14... Position detection unit, 65... Measurement member

Claims (9)

a bed as a base,
a pillar supported by the bed;
a slide that moves relative to the post;
an upper mold part installed on the slide;
a lower mold part installed on the bed so as to face the lower part of the upper mold part;
a plurality of driving units for driving the slide;
a plurality of power transmission units that connect the slide so as to be rotatable in any direction and transmit the driving force generated by the drive unit to the slide;
a plurality of position detection units for detecting positions of the slide corresponding to the plurality of drive units;
a control unit capable of separately driving the plurality of driving units so that the slide moves to a predetermined position based on at least the position of the slide detected by the position detection unit;
with
The upper mold part is provided with a blade part protruding downward,
The electric press machine, wherein the control section does not drive at least one of the plurality of drive sections and drives the remaining drive sections to correct the position of the tip of the blade section. The control unit
2. The electric press machine according to claim 1, wherein the tip of the blade portion is corrected so as to be horizontal. The control unit
3. The electric press machine according to claim 1, wherein the drive section is operated so as to raise a portion of the blade section that is below a position that forms a predetermined horizontal state or inclined state. Further comprising an operation panel for inputting the distance between the blades in the direction in which the tip of the blade is inclined and the difference in the vertical position of the tip of the blade,
The control unit has a calculation unit that calculates the correction amount of the slide from the interval between the blades in the direction in which the tips of the blades are inclined and the difference in vertical position of the tips of the blades. Item 4. The electric press machine according to any one of Items 1 to 3. an operation panel for inputting the interval between the blades in the direction in which the tips of the blades are inclined;
a measuring member for measuring the difference in the vertical position of the tip of the blade;
further comprising
The control unit has a calculation unit that calculates the correction amount of the slide from the interval between the blades in the direction in which the tips of the blades are inclined and the difference in vertical position of the tips of the blades. Item 4. The electric press machine according to any one of Items 1 to 3. The slide is moved with respect to the support by the driving force generated by the plurality of driving units,
The plurality of driving sections are operated so that the slides move to predetermined positions based on the positions of the slides detected by the position detecting section that detects the positions of the slides corresponding to the plurality of driving sections. drive separately,
A method of operating an electric press machine, wherein at least one of the plurality of drive sections is not driven, and the remaining drive sections are driven to correct the position of the tip of the blade. 7. The method of operating an electric press machine according to claim 6, wherein the tip of the blade portion is corrected so as to be horizontal. 8. The method of operating an electric press machine according to claim 7, wherein the drive section is operated so as to raise a portion of the blade section that is below a position that forms a predetermined horizontal state or inclined state. 9. The correction amount of the slide is calculated from an interval between the blades in a direction in which the tips of the blades are inclined and a difference in vertical position of the tips of the blades. A method of operating the electric press machine according to 1.

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