Electric press machine

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

[Technical field]

[0001] The present invention relates to an electric press machine for processing thin films. [Background technology]

[0002] Conventionally, a technique has been disclosed in which a die having a punch and a die serving as cutting edges is used to form through holes in a film substrate by a press machine (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2011-40485 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional press machines could not finely adjust the parallelism of the slide, and could not process multilayer films with high precision. For example, FIG. 11(a) shows a vertical cross section of a mold part. Conventionally, when processing multilayer films, as shown in FIG. 11(a), the parallelism of the slide could not be maintained, and the upper mold part 5 was not parallel in some cases. FIG. 11(b) shows the film F after processing as seen from above. The straight lines indicate the parts where the multilayer film F has been completely cut, and the dashed lines indicate the parts where the multilayer film F has only been cut halfway. In this way, there was a risk of variation in the depth of the cut.

[0005] An object of the present invention is to provide an electric press machine capable of processing thin films with high precision. [Means for solving the problem]

[0006] The electric press machine according to the present invention comprises: The base bed and A support supported by the bed; a slide that moves relative to the post; An upper mold part installed on the slide; A lower mold part is installed on the bed so as to face the lower side of the upper mold part; A plurality of drive 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 a driving force generated by the driving unit to the slide; a plurality of position detectors for detecting the position 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; Equipped with The upper mold portion is provided with a blade portion protruding downward, The control unit 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 unit. Effect of the Invention

[0007] According to the electric press machine of the present invention, it is possible to process thin films with high precision. [Brief description of the drawings]

[0008] [Figure 1] 1 shows an embodiment of an electric pressing machine. [Diagram 2] 1 shows an outline of a slide mechanism of an electric press machine according to an embodiment of the present invention. [Diagram 3] 2 shows a horizontal cross section including a slide of the electric pressing machine of the present embodiment. [Figure 4] 2 shows a die portion of the electric press machine of the present embodiment. [Diagram 5] 1 shows a system configuration of an electric press machine according to an embodiment of the present invention. [Figure 6] 4 shows a flowchart of position correction during a teaching process of the electric press machine of the first embodiment. [Figure 7] 1 shows a state in which a multilayer film is processed by an electric press machine of a first embodiment. [Figure 8] 3 shows a state of a slide of the electric press machine of the first embodiment. [Figure 9] 13 shows a flowchart of position correction during a teaching process of an electric press machine according to a second embodiment. [Figure 10] 13 shows a method for measuring the distance between an upper die and a lower die of an electric press machine according to a second embodiment. [Figure 11] 1 shows the processing state using a conventional press processing machine. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Fig. 1 shows one embodiment of an electric press machine P. Fig. 2 shows an outline of a 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. Note that the support pillar 2 and crown 3 are omitted in Fig. 2.

[0010] The electric press machine P includes a bed 1, a support column 2, a crown 3, a scale column 4, a slide 11, a motor 12 as a drive unit, a ball screw 13 as a power transmission unit, and a position detection unit 14.

[0011] The bed 1 is a member that serves as a base for placing the electric press machine P on the ground. The support pillars 2 are columns that are supported by the bed 1 and extend upward. In this embodiment, there are four support pillars 2, which are installed near the four corners of the bed 1. The crown 3 is placed on the support pillars 2 and mounts the motor 12 thereon. The bed 1, the support pillars 2 and the crown 3 form the frame of the electric press machine. Note that the number of support pillars 2 is not limited to four, and it is sufficient that there are at least two or more support pillars that can support the crown 3. Furthermore, the support pillars are not limited to being columnar, and may be plate-shaped.

[0012] The slide 11 is attached so as to be movable relative to the support column 2. In this embodiment, the four corners of the slide 11 are movably installed on the support column 2. The slide 11 has a slight gap or the like formed with respect to the support column 2, and has a structure which allows it to tilt.

[0013] The motor 12 is placed on the crown 3 and drives a ball screw 13 serving as a power transmission unit. As shown in FIG. 2, the ball screw 13 has a screw shaft 13a and a connecting portion 13b. The screw shaft 13a passes through the crown 3 and is connected to an output shaft of the motor 12. The connecting portion 13b is a ball joint or the like. Thus, the ball screw 13 mounts the slide 11 so that the slide 11 can rotate in any direction, and transmits the driving force generated by the motor 12 to the slide 11. As a result, the motor 12 drives the slide 11.

[0014] In this embodiment, four motors 12 are provided corresponding to the four corners of the crown 3 and the slide 11. The four motors 12 and the ball screws 13 operate independently. The number of motors 12 is not limited to four, but may be at least two.

[0015] The position detection unit 14 is preferably a linear scale or the like that reads the scale post 4 and measures the height at which the slide 11 is positioned relative to the bed 1. In this embodiment, there are four position detection units 14 corresponding to the four corners of the slide 11. Note that at least two position detection units 14 are required.

[0016] The scale post 4 is attached vertically to the bed 1 at one end and to the crown 3 at the other end. In this embodiment, the scale post 4 is attached to the outside of the slide 11 near the four corners.

[0017] The upper mold part 5 is mounted on the slide 11 and moves together with the slide 11. The lower mold part 6 is mounted on the bed 1. The upper mold part 5 and the lower mold part 6 are disposed opposite each other, and a material is processed by being sandwiched between the upper mold part 5 and the lower mold part 6.

[0018] 3, the ball screw 13 of the electric press machine P of this embodiment is a first ball screw 131 at the top right of the page, a second ball screw 132, a third ball screw 133, and a fourth ball screw 134 in a counterclockwise direction. The motor 12 and the position detector 14 correspond to the ball screw 13 in the same manner, and the first to fourth numbers are applied.

[0019] Fig. 4 shows a die portion of the electric press machine P of this embodiment. Fig. 4(a) is a cross section of the die portion as viewed from the side, and Fig. 4(b) is a cross section taken along line IVb-IVb of Fig. 4(a).

[0020] The upper die section 5 is provided with a blade section 51 that protrudes downward. The blade section 51 may be a Thomson blade, an etching blade, or the like. The electric press processing machine P of this embodiment can process the multilayer film F by punching or cutting it using the blade section 51. The multilayer film F may have a structure in which a film, an adhesive, a copper foil, a separator, or the like is layered in multiple layers. The thickness of each layer of the multilayer film F may be 1 mm or less. The electric press processing machine P of this embodiment can adjust the position of the upper die section 5 and the blade section 51 in 1 μm increments. Therefore, if a user sets the layer of the multilayer film F to be processed, processing can be performed up to the set layer.

[0021] FIG. 5 shows a system configuration of the electric press machine P of this embodiment.

[0022] The electric press machine P has an operation panel 9 operated by a user, a control unit 7 that drives and controls a first motor 121 to a fourth motor 124 for the first axis to the fourth axis in response to commands from the operation panel 9, and a memory unit 8 that pre-stores information regarding the drive energy for each stage supplied to each of the first motor 121 to the fourth motor 124.

[0023] Also, corresponding to each axis, there are a first servo amplifier 161 to a fourth servo amplifier 164 which receive signals from the control unit 7 and drive control the first motor 121 to the fourth motor 124, a first encoder 151 to a fourth encoder 154 which detect the rotation speeds of the first motor 121 to the fourth motor 124, and a first position detection unit 141 to a fourth position detection unit 144 which detect the position of each axis.

[0024] The control unit 7 has 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 calculation unit 7b that calculates the command values ​​from the detection values ​​of the first position detection unit 141 to the fourth position detection unit 144. The operation panel 9, the control unit 7, or the memory unit 8 may be installed separately from the electric press machine P using a personal computer, a mobile terminal, or the like.

[0025] Next, the position control of the electric press machine of this embodiment will be described, in which the electric press machine P has four axes.

[0026] The electric press machine P of this embodiment automatically and repeatedly performs the operation of pressing the workpiece during the actual press working period in which the molded product is actually produced. The slide 11 can be made horizontal or inclined to a predetermined position with high accuracy at each stage of the press working operation during the actual press working period.

[0027] That is, the electric press machine P of this embodiment has a teaching period prior to an actual press period. In this embodiment, a case will be described in which the slide 11 of the electric press machine P is controlled to be in a horizontal state.

[0028] 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 the state of processing of a multilayer film 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.

[0029] Fig. 7(a) shows a state in which the blade portion 51 of the electric press machine P of the first embodiment has cut up to the second layer F2 of the multilayer film F. Fig. 7(b) shows a state in which the blade portion 51 of the electric press machine P of the first embodiment has cut up to the fourth layer F4 of the multilayer film F. Fig. 7(c) shows a state in which the blade portion 51 of the electric press machine P of the first embodiment has cut up to the sixth layer F6 of the multilayer film F.

[0030] Fig. 8(a) shows a normal state of the slide 11 of the electric press machine P of the first embodiment. Fig. 8(b) shows a corrected state of the slide 11 of the electric press machine P of the first embodiment.

[0031] First, in step 1, a material to be measured is set in the electric press machine P (ST1). The material to be measured may be a film material, a multilayer film F as shown in FIG. 4, or other resin material. The thickness of each layer of the film may be 1 μm or more.

[0032] Next, in step 2, the measurement material set in the electric press machine P in step 1 is processed (ST2). Processing is performed by lowering all four axes of the motors 12 to a preset position. The electric press machine P of this embodiment is set so that the slide 11 moves in parallel.

[0033] Next, in step 3, the processing state of the measurement material processed in step 2 is confirmed (ST3). For example, if the measurement material is a monolayer film, the user will know that the upper mold part 5 is tilted from the unprocessed state where the blade part 51 has not reached it, and will determine the amount of tilt by visual inspection and experience. Also, if the measurement material is a multilayer film, as shown in Figure 8, the layers that the blade part 51 reaches will be different, so the user will determine the amount of tilt from the position of the blade part 51 and the layer that it has reached. Here, the amount of tilt is the difference Δh in the vertical height of the blade part 51 at the position to be corrected shown in Figure 9(a).

[0034] The blade portion 51 of this embodiment has a shape as shown in Fig. 4(b). When the blade portion 51 is attached to the inclined upper mold portion 5 as shown in Fig. 8(a), a difference Δh occurs in the vertical height of the blade portion 51 between the left and right directions of the paper. That is, an inclination occurs in a cross section including the axes of the first ball screw 131 and the second ball screw 132 or in a cross section including the axes of the third ball screw 133 and the fourth ball screw 134.

[0035] In this embodiment, the case where the inclination occurs in the left-right direction of the paper has been used as an example, but the inclination may occur in the front-to-back direction of the paper, i.e., in a cross section including the axes of the first ball screw 131 and the fourth ball screw 134 or in a cross section including the axes of the second ball screw 132 and the third ball screw 133. Moreover, the inclination may occur in both the front-to-back direction and the left-to-right direction of the paper, i.e., 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.

[0036] Next, in step 4, the calculation unit 7b of the electric press machine P calculates the parallelism correction axis and the correction amount (ST4). With respect to the interval l of the blade portions 51 to be corrected and the difference Δh in the vertical position of the blade portions 51 to be corrected obtained in step 3, the correction amount ΔH of the slide 11 shown in Fig. 9 is calculated by previously setting a lever ratio with respect to the interval L of the position detection unit 14 in the target direction.

[0037] For example, the user inputs the interval between the blade portions 51 in the direction in which the tips of the blade portions 51 are inclined and the difference in the vertical position of the tips of the blade portions 51 to the operation panel 9. The calculation unit 7b of the control unit 7 then calculates the correction amount of the slide 11 from the interval between the blade portions 51 in the direction in which the tips of the blade portions 51 are inclined and the difference in the vertical position of the tips of the blade portions 51.

[0038] In this embodiment, the correction axis is the axis of the ball screw on the side where the blade portion 51 is located downward. For example, in the example shown in Fig. 8(a), the blade portion 51 on the left side of the paper is located downward, so the axis of the ball screw on the left side of the paper is the correction axis.

[0039] 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 control ends. The tilt function may be turned ON / OFF by a user via the operation panel 9, or may be automatically switched according to the value calculated in step 4.

[0040] If the tilt function is ON in step 5, a correction axis is selected in step 6 (ST6). In this embodiment, at least one of the drive unit motors 12 among the multiple 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, since it is calculated in step 4 that the left side of the paper, i.e., the axes of the second ball screw 132 and the third ball screw 133, are to be raised, the axes of the second ball screw 132 and the third ball screw 133 are selected.

[0041] Next, in step 7, the correction axis is moved up and down (ST7). In this embodiment, as shown in Fig. 8(b), the first motor 121 and the fourth motor 124 are not driven, and the second motor 122 and the third motor 123 are driven to raise the second ball screw 132 and the third ball screw 133 sides of the slide 11 by the correction amount ΔH calculated in step 4, and correction is performed so that the tip of the blade portion 51 is horizontal.

[0042] In this way, the electric press processing machine P of this embodiment is capable of processing film with high precision by not driving at least one of the multiple driving units and driving the remaining driving units to correct the position of the tip of the blade.

[0043] Fig. 9 shows a flowchart of position correction during the teaching period of the electric press machine P of the second embodiment. Fig. 10 shows a method of measuring the distance between the upper die 5 and the lower die 6 of the electric press machine P of the second embodiment.

[0044] In the position correction of the electric pressing 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 the four corners corresponding to the first ball screw 131 to the fourth ball screw 134.

[0045] Next, in step 12, the calculation unit 7b of the electric press machine P calculates the parallelism correction axis and the correction amount (ST12). The correction amount ΔH of the slide 11 shown in Fig. 9 is calculated by setting in advance a lever ratio with respect to the interval l of the blade portions 51 to be corrected, which is input in advance from the operation unit 9 and stored in the storage unit 8, and the difference Δh in the vertical position of the blade portions 51 to be corrected, which is obtained in step 11, and the interval L of the position detection unit 14 in the target direction.

[0046] For example, the user inputs the spacing between the blade portions 51 in the direction in which the tips of the blade portions 51 are inclined to the operation panel 9. Also, the difference in the vertical position of the tips of the blade portions 51 measured by the measuring member 65 in step 11 is input to the control unit 7. Then, the calculation unit 7b of the control unit 7 calculates the correction amount for the slide 11 from the spacing between the blade portions 51 in the direction in which the tips of the blade portions 51 are inclined and the difference in the vertical position of the tips of the blade portions 51.

[0047] It should be noted that steps 13 to 16 in the second embodiment are similar to steps 5 to 8 in the first embodiment, and therefore a description thereof will be omitted.

[0048] During the actual press working period, driving energy is supplied to each of the motors 121-124 at each stage during the progress of each shot during the press working based on the information stored in the storage unit 8. The position of the slide 11 is measured by the position detection units 141-144, and if the position differs from the position captured during the teaching working period, the calculation unit 7b calculates a command value to correct the position, and the command unit 7a issues the command value to the servo amplifiers 161-164 corresponding to each axis. In this embodiment, since such control is performed, the slide 11 can be kept horizontal or inclined with high accuracy even at each stage of the press working operation.

[0049] In the first and second embodiments, since the right side is higher relative to the page, 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. The electric pressing machine P of the present embodiment is not limited to this, and it is sufficient that at least one ball screw is fixed and the other ball screws are driven.

[0050] 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. Also, 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.

[0051] As described above, the electric press processing machine P of this embodiment includes the bed 1 as a base, the support 2 supported by the bed 1, the slide 11 moving relative to the support 2, the upper mold part 5 installed on the slide 11, the lower mold part 6 installed on the bed 1 facing the lower side of the upper mold part 5, a plurality of drive parts 12 for driving the slide 11, a plurality of power transmission parts 13 for connecting the slide 11 so as to be rotatable in any direction and transmitting the drive force generated by the drive part 12 to the slide 11, a plurality of position detection parts 14 for detecting the position of the slide 11 corresponding to the plurality of drive parts 12, and a control part 7 capable of separately driving the plurality of drive parts 12 so that the slide 11 moves to a predetermined position based on at least the position of the slide 11 detected by the position detection part 14, and the upper mold part 6 is provided with a blade part protruding downward, and the control part 7 does not drive at least one of the plurality of drive parts 12, but drives the remaining drive parts 12 to correct the position of the tip of the blade part 511. Therefore, the film can be processed with high precision.

[0052] Furthermore, according to the electric pressing machine P of this embodiment, the control unit 7 corrects the tip of the blade portion 51 so that it is horizontal. Therefore, the film can be processed into a horizontal layer with high precision.

[0053] Furthermore, according to the electric press machine P of this embodiment, the control unit 7 operates the drive unit 12 to raise the portion of the cutting portion 51 that is below the position at which the cutting portion 51 forms a predetermined horizontal or inclined state. This makes it possible to prevent the tip of the cutting portion 51 from colliding with the lower die portion 6.

[0054] Moreover, the electric press processing machine P of this embodiment further includes an operation panel 9 for inputting the spacing between the blade portions 51 in the direction in which the tips of the blade portions 51 are inclined and the difference in the vertical position of the tips of the blade portions 51, and the control unit 7 has a calculation unit 7b that calculates the correction amount of the slide 11 from the spacing between the blade portions 51 in the direction in which the tips of the blade portions 51 are inclined and the difference in the vertical position of the tips of the blade portions 51. Therefore, the film can be processed with higher precision.

[0055] Moreover, the electric press processing machine P of this embodiment further includes an operation panel 9 for inputting the spacing between the blade portions 51 in the direction in which the tips of the blade portions 51 are inclined, and a measuring member 65 for measuring the difference in the vertical position of the tips of the blade portions 51, and the control unit 7 has a calculation unit 7b for calculating the correction amount of the slide 11 from the spacing between the blade portions 51 in the direction in which the tips of the blade portions 51 are inclined and the difference in the vertical position of the tips of the blade portions 51. Therefore, the film can be processed with higher precision.

[0056] 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. [Explanation of symbols]

[0057] Reference Signs List 1...bed (frame), 2...pillar (frame), 3...crown (frame), 4...scale column, 5...upper die section, 51...blade section, 6...lower die section, 7...control section, 8...storage section, 9...operation section, 11...slide, 12...motor (drive section), 13...ball screw (power transmission section), 14...position detection section, 65...measuring member

Claims

1. The base bed and A support supported by the bed; a slide that moves relative to the post; An upper mold part installed on the slide; A lower mold part is installed on the bed so as to face the lower side of the upper mold part; A plurality of drive 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 a driving force generated by the driving unit to the slide; a plurality of position detectors for detecting the position 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; Equipped with The upper mold portion is provided with a blade portion protruding downward, The control unit 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 unit. Electric press machine.

2. The control unit is The tip of the blade is corrected so as to be horizontal.

2. The electric press machine according to claim 1.

3. The control unit is Operate the drive unit so as to raise a portion of the blade portion that is below a position that forms a predetermined horizontal or inclined state.

3. The electric press machine according to claim 1 or 2.

4. Further, a control panel is provided for inputting the interval between the blade portions in the direction in which the tips of the blade portions are inclined and the difference in the vertical position of the tips of the blade portions, The control unit has a calculation unit that calculates a correction amount of the slide from a distance between the blade portions in a direction in which the tips of the blade portions are inclined and a difference in a vertical position of the tips of the blade portions.

4. The electric press machine according to claim 1, wherein the pressing machine is a pressing machine having a pressing mechanism.

5. An operation panel for inputting the interval between the blade portions in the direction in which the tips of the blade portions are inclined; A measuring member that measures a difference in a vertical position of the tip of the blade portion; Further equipped with The control unit has a calculation unit that calculates a correction amount of the slide from a distance between the blade portions in a direction in which the tips of the blade portions are inclined and a difference in a vertical position of the tips of the blade portions.

4. The electric press machine according to claim 1, wherein the pressing machine is a pressing machine having a pressing mechanism.

6. A bed serving as a base; A support supported by the bed; a slide that moves relative to the post; An upper mold part installed on the slide; A lower mold part is installed on the bed so as to face the lower side of the upper mold part; A plurality of drive 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 a driving force generated by the driving unit to the slide; a plurality of position detectors for detecting the position 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; Equipped with A method for operating an electric press machine in which the upper die portion is provided with a blade portion that protrudes downward, comprising: The slide is moved relative to the support by the driving force generated by the multiple driving units; separately driving the plurality of drive units so that the slide moves to a predetermined position based on the position of the slide detected by a position detection unit that detects the position of the slide in correspondence with the plurality of drive units; At least one of the plurality of drive units is not driven, and the remaining drive units are driven to correct the position of the tip of the blade unit. How an electric press machine works.

7. The tip of the blade is corrected so as to be horizontal. A method for operating an electric pressing machine according to claim 6.

8. Operate the drive unit so as to raise a portion of the blade portion that is below a position that forms a predetermined horizontal or inclined state. A method for operating an electric pressing machine according to claim 7.

9. The amount of correction for the slide is calculated from the distance between the blades in the direction in which the tips of the blades are inclined and the difference in the vertical position of the tips of the blades. A method for operating an electric pressing machine according to any one of claims 6 to 8.

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