Plate-shaped member feeding device

Abstract

To provide a plate-like material feeding device which is reduced in the installation space to enhance the degree of freedom of the installation layout and the maintainability and has a high conveyance capacity while having a configuration which is relatively simple and compact and leads to low cost.SOLUTION: A plate-like material feeding device 10 is configured to sandwich a plate-like material M between a lower roll 101 rotatably supported on a device main body and an upper roll 102 which is rotatable and arranged to face the lower roll 101 in parallel thereto, so as to convey the plate-like material M. The plate-like material feeding device includes: a lower gear 111 integrally provided on a rotation shaft of the lower roll 101; an intermediate gear 112 which is meshed with the lower gear 111, and is integrally provided on a rotation shaft of the upper roll 102; an upper gear 113 meshed with the intermediate gear 112; a lower-roll drive motor 110 which is integrally coupled to the rotation shaft of the lower roll 101 so as to drive the rotation shaft to rotate; and an upper-roll drive motor 130 configured to drive the upper gear 113 to rotate.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a plate member feeder that feeds plate members downstream (to the next process), and more particularly to a plate member feeder that transports plate members to be supplied to a press machine, for example. [Background technology]

[0002] Conventionally, as a technology for supplying plate-shaped members (sheet-shaped blanks) to a press machine, Patent Document 1, for example, describes a material feeding device that conveys the plate-shaped member by sandwiching the plate-shaped member M between an upper roll 1 and a lower roll 2, and rotating the upper roll 1 via a rotating shaft 1B by an upper roll drive motor 1A, and rotating the lower roll 2 via a rotating shaft 2B by a lower roll drive motor 2A, as shown in FIG. 7. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-18992 [Patent Document 2] Japanese Patent Application Publication No. 2018-47496 Summary of the Invention [Problem to be solved by the invention]

[0004] In the material feeding device described in Patent Document 1, the difference in the moment of inertia between the upper and lower rolls 1 and 2 is set to 0.001% or less, thereby ensuring synchronization between the upper roll 1 and the lower roll 2. However, even if the difference in the moments of inertia between the upper and lower rolls 1, 2 is kept to 0.001% or less and the upper and lower drive motors 1A, 2A are controlled to operate synchronously, the upper roll drive motor 1A and the lower roll drive motor 2A are driven separately, so it is possible that a discrepancy in drive between the two will occur for some reason. Therefore, it is desirable to synchronize the upper roll 1 and the lower roll 2 by mechanically connecting them from the standpoint of increasing the conveying speed, conveying accuracy, safety, etc.

[0005] 8, the material feed device of Patent Document 2 is provided with a lower roll drive motor 7 at one end of a lower roll shaft 5A that is coaxial with the lower roll 5 and that drives the lower roll shaft 5A to rotate, and an outer peripheral gear 5B that rotates integrally with the lower roll shaft 5A is provided at the other end of the lower roll shaft 5A. An outer peripheral gear 6B that meshes with the outer peripheral gear 5B is attached substantially integrally to the upper roll shaft 6A that is coaxial with the upper roll 6. In the device of Patent Document 2 having such a configuration, the outer peripheral gear 5B and the outer peripheral gear 6B are meshed with each other, so that the lower roll 5 and the upper roll 6 are mechanically rotationally coupled and mechanically synchronized.

[0006] However, in the material feeding device having the configuration of Patent Document 2, the lower roll 5 and the upper roll 6 are driven by a single motor, and therefore the conveying capacity is not as great as that of Patent Document 1.

[0007] Therefore, if one wishes to increase the conveying capacity after achieving mechanical synchronization between the upper and lower rolls using the method of Patent Document 2, it is conceivable to attach motors to drive the upper rolls 6 (rotation shafts 6A) on the left and right sides of the device (the left-right direction in FIG. 8), as in Patent Document 1. However, in this case, the width of the device increases, reducing the flexibility of device installation in a factory. Furthermore, the presence of drive motors on the left and right increases the area in which the wiring for the drive motors must be routed. As a result, this may cause inconvenience during device maintenance work and impair the maintainability of the device.

[0008] Furthermore, with the recent increase in the speed of press machines, there is a demand for plate material feeders to have even higher conveying accuracy and conveying capacity while still being able to maintain a small width.

[0009] The present invention has been made in consideration of the above-mentioned circumstances, and aims to provide a plate-like material feeding device that has a relatively simple, compact, and low-cost configuration, while reducing installation space and improving freedom of installation layout and ease of maintenance, and that has a high conveying capacity. [Means for solving the problem]

[0010] For this reason, the plate member feeding device according to the present invention has the following features: A plate-like member feeding device that conveys a plate-like member by sandwiching it between a lower roll that is rotatably supported on a device body and a rotatable upper roll that is disposed parallel to the lower roll, a lower gear integrally provided on the rotation shaft of the lower roll; an intermediate gear that is meshed with the lower gear and is integral with the rotation shaft of the upper roll; an upper gear that meshes with the intermediate gear; a lower roll drive motor that is integrally attached to a rotation shaft of the lower roll and drives it to rotate; an upper roll drive motor that rotates and drives the upper gear; The present invention is characterized by comprising:

[0011] In the present invention, the lower roll drive motor and the upper roll drive motor may be disposed on the same side of the lower roll and the upper roll.

[0012] In the present invention, the lower roll drive motor and the upper roll drive motor are When viewed from a direction perpendicular to the rotation axis of the lower roll and the rotation axis of the upper roll, the intermediate gear Regarding , and is located on the opposite side to the side where the lower roll and the upper roll are located.

[0013] In the present invention, the upper roll and the intermediate gear may be connected via an Oldham coupling.

[0014] In the present invention, the rotation center of the lower gear, the rotation center of the intermediate gear, and the rotation center of the upper gear may be arranged on the same straight line.

[0015] In the present invention, a straight line connecting the center of rotation of the lower gear and the center of rotation of the intermediate gear; a straight line connecting the center of rotation of the intermediate gear and the center of rotation of the upper gear; may be characterized in that they intersect at a predetermined angle.

[0016] In the present invention, The present invention can be characterized in that an idle gear is interposed between the intermediate gear and the upper gear.

[0017] In the present invention, The lower gear, intermediate gear and upper gear may be characterized by having the same module and the same number of teeth.

[0018] In the present invention, The lower gear and intermediate gear may be characterized as having the same module and number of teeth, and the upper gear may have the same module but a greater number of teeth. [Effects of the Invention]

[0019] According to the present invention, it is possible to provide a plate-like material feeding device that has a relatively simple, compact, and low-cost configuration, while reducing installation space and improving freedom of installation layout and ease of maintenance, and that has a high conveying capacity. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a front view showing an example of a press machine equipped with a plate member feed device according to a first embodiment of the present invention. [Figure 2]FIG. 2 is a plan view of FIG. [Figure 3] FIG. 2 is a left side view of FIG. 1. [Figure 4] 1A is a cross-sectional view of the plate-shaped member feeding device according to the embodiment, and FIG. 1B is a view taken along the line AA in FIG. [Figure 5] (A) is a side view showing the gear portion of the plate-shaped material feeding device according to the embodiment, and (B) is a side view showing an example in which an upper outer peripheral gear with a larger outer diameter than (A) is used. [Figure 6] (A) is a side view showing the gear portion of a plate-shaped material feeding device according to a second embodiment, and (B) is a side view showing the gear portion of a plate-shaped material feeding device according to a third embodiment. [Figure 7] FIG. 1 is a cross-sectional view showing an example of a conventional material feeding device (Patent Document 1). [Figure 8] FIG. 10 is a cross-sectional view showing another example of a conventional material feeding device (Patent Document 2). DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, a plate-like member (sheet-like member or workpiece) feeding device (conveying device) according to an embodiment of the present invention will be described with reference to the accompanying drawings. Note that the present invention is not limited to the following examples.

[0022] First Embodiment 1 shows an example of a press machine 10 equipped with plate member feeding devices 100, 200 according to the present embodiment. FIG. 1 is a front view, FIG. 2 is a plan view, and FIG. 3 is a left side view of FIG.

[0023] The plate-like material feeding device 100 according to this embodiment is disposed upstream of the press machine 10 in the feeding direction F of the plate-like material. As shown in FIGS. 1 to 3, a long plate-like material M wound around a roll 20 rotatably supported on a support shaft 20A passes through a buffer mechanism 30 and is then supplied to the plate-like material feeding device 100. The buffer mechanism 30 is a length (position) adjusting device provided to synchronize the position of the plate-like material M in the feeding direction with the timing of the press working of the press machine 10.

[0024] Also, as shown in Figures 1 and 2, the long plate-like material M supplied to the plate-like material feeding device 100 passes through the slide 11, upper mold 12, and lower mold 13 within the press machine 10 and is supplied to the plate-like material feeding device 200. Then, in accordance with the processing timing of the press machine 10, the plate-shaped member feeding device 100 and the plate-shaped member feeding device 200 pull out the long plate-shaped member M from the roll 20 in the feeding direction F and feed it to a predetermined position, where it is pressed by the press machine 10. Thereafter, the plate-shaped member feeding device 100 and the plate-shaped member feeding device 200 feed the plate-shaped member M in the feeding direction F, and the press machine 10 prepares for the next press processing.

[0025] The following describes examples of the configuration of the plate-shaped member feeding device 100 and the plate-shaped member feeding device 200 according to this embodiment. Since the plate-shaped member feeding device 100 and the plate-shaped member feeding device 200 have the same configuration, the plate-shaped member feeding device 100 will be described as a representative here. As shown in Figures 4(A) and 4(B), the plate member feeding device 100 includes a lower roll 101 and an upper roll 102 disposed parallel to the lower roll 101 with a predetermined gap therebetween. A plate member M is fed into the predetermined gap between the lower roll 101 and the upper roll 102.

[0026] One end of a lower roll rotation shaft 101A of the lower roll 101 is rotatably connected to an output shaft 110A of a lower roll drive motor 110 by a lower friction fastener 101B or the like. This connection can be realized by a spline connection or the like.

[0027] A lower outer peripheral gear (lower gear) 111 is attached substantially integrally to the output shaft 110A. An intermediate outer peripheral gear (intermediate gear) 112 meshes with the lower outer peripheral gear 111 on its upper side (see FIG. 5(A)).

[0028] The rotation shaft 112A of the intermediate outer peripheral gear 112 is rotatably connected to the intermediate element 102C via an Oldham coupling 112B. The intermediate element 102C is rotatably connected to the upper roll rotation shaft 102A of the upper roll 102 via an upper friction fastener 102B or the like. This connection can also be realized by a spline connection or the like.

[0029] The lower friction fasteners 101B and 102B are mechanical elements that fasten two rotating shafts coaxially by a wedge method that utilizes wedge action by tightening bolts or the like, or by a hydro method (hydraulic method) that utilizes Pascal's principle.

[0030] The lower roll 101, lower roll rotating shaft 101A, output shaft 110A, and lower outer peripheral gear 111 are rotatably supported on the apparatus main body frame 100A (such as a housing) via bearings 120A, 120B, and 120C. The lower roll drive motor 110 is attached substantially integrally to the apparatus main body frame 100A.

[0031] The upper roll 102, the upper roll rotation shaft 102A, and the intermediate rotation element 102C are rotatably supported on the frame 100B via bearings 120D and 120E. On the other hand, the rotation shaft 112A of the intermediate outer peripheral gear 112 is rotatably supported on the apparatus main body frame 100A via a bearing 120F.

[0032] The lower outer peripheral gear 111 and the intermediate outer peripheral gear 112 are gears with the same module and the same number of teeth. The frame 100B is configured to be movable relative to the apparatus main body frame 100A in the up and down directions in Figures 4(A) and 4(B) via an elevating mechanism 140.

[0033] 4(A) and 5(A), in this embodiment, the intermediate outer peripheral gear 112 is meshed with an upper outer peripheral gear (upper gear) 113, and a rotating shaft 113A of the upper outer peripheral gear 113 is configured integrally with an output shaft 130A of an upper roll drive motor 130. The rotating shaft 113A of the upper outer peripheral gear 113 is rotatably supported by the apparatus main body frame 100A via bearings 120G and 120H. The upper roll drive motor 130 is attached substantially integrally with the apparatus main body frame 100A and on the same side as the lower roll drive motor 110 with respect to the lower roll 101 and the upper roll 102.

[0034] In the plate member feeding device 100 configured as described above, the plate member M pulled out from the roll 20 is supplied to a predetermined gap between the lower roll 101 and the upper roll 102. In this state, when the lower roll drive motor 110 and the upper roll drive motor 130 are driven to rotate, the lower roll 101 and the upper roll 102 rotate. As a result, the plate member M sandwiched between the lower roll 101 and the upper roll 102 is fed in a predetermined feeding direction F (see FIG. 4(B)).

[0035] In this embodiment, the lower roll 101 and the upper roll 102 are mechanically rotationally connected via the lower outer peripheral gear 111 and the intermediate outer peripheral gear 112, and therefore the lower roll 101 and the upper roll 102 are mechanically synchronized.

[0036] As shown in Figures 4(A) and 4(B), the lifting mechanism 140 includes a lifting motor 141 that is supported substantially integrally with the apparatus main body frame 100A. The output shaft of the lifting motor 141 supports the frame 100B via a rotation-to-swing motion conversion mechanism 142, such as an eccentric cam. The lifting mechanism 140 also includes a gas spring device 143 that applies a predetermined pressing force around a swing shaft 144. Therefore, when the output shaft of the lifting motor 141 is rotated in a predetermined direction, the frame 100B moves downward via the rotation-to-swing motion conversion mechanism 142, and when the output shaft of the lifting motor 141 is rotated in the opposite direction, the frame 100B moves upward via the rotation-to-swing motion conversion mechanism 142.

[0037] When the plate-like member M is being transported, in the rotational / oscillating motion converting mechanism 142, for example, the eccentric cam is adjusted to a position where a gap is formed between the cam follower, and the action of the gas spring device 143 is generated toward the upper roll 102. As a result, the plate-like member M between the lower roll 101 and the upper roll 102 is clamped. After the plate-shaped member M is transported, during press working, in the rotational / swinging motion converting mechanism 142, for example, an eccentric cam presses a cam follower, generating a force that resists the acting force of the gas spring device 143 on the upper roll 102. As a result, the plate-shaped member M between the lower roll 101 and the upper roll 102 is unclamped. This allows for slight movement of the plate-shaped member M during press working.

[0038] In this way, the vertical position of the upper roll 102 is adjusted by moving the frame 100B relative to the apparatus main body frame 100A in the vertical direction using the lifting mechanism 140. In this case, the misalignment (eccentricity) between the "upper roll rotation shaft 102A (intermediate rotation element 102C) of the upper roll 102" and the "rotation shaft 112A of the intermediate outer peripheral gear 112" that occurs when the upper roll 102 is moved relative to the lower roll 101 can be absorbed by the Oldham coupling 112B.

[0039] Furthermore, in this embodiment, the rotational force of the upper roll drive motor 130 can be transmitted not only to the upper roll 102 but also to the lower roll 101 via the upper outer peripheral gear 113 and the intermediate outer peripheral gear 112. Similarly, the rotational force of the lower roll drive motor 110 is transmitted not only to the lower roll 101 via the output shaft 110A and the lower roll rotation shaft 101A, but also to the upper roll 102 via the lower outer peripheral gear 111 and the intermediate outer peripheral gear 112. Therefore, the upper roll 102 and the lower roll 101 can each rotate using the combined driving force of the two driving sources, the upper roll drive motor 130 and the lower roll drive motor 110, to feed the plate material M. In other words, the conveying capacity of the plate material feeding device 100 can be improved.

[0040] Furthermore, according to the plate member feeding device 100 of this embodiment, as shown in Figures 2, 3, and 4(A), the lower roll drive motor 110 and the upper roll drive motor 130 are disposed on the same side (one side) of the lower roll 101 and the upper roll 102, so the width of the entire feeding device 100 can be made smaller than when the upper drive motor is attached to one side of the feeding device 100 and the lower drive motor is attached to the opposite side. This improves the flexibility of installation of the feeding device in a factory, and also allows the wiring and the like of the feeding device 100 to be concentrated on one side. As a result, the feeding device 100 is easily accessible during maintenance, and maintains high maintainability, workability, and the like.

[0041] In other words, according to this embodiment, a plate-like material feeding device can be provided that has a relatively simple, compact, and low-cost configuration, while reducing installation space and improving freedom of installation layout and maintainability, and that has a high conveying capacity.

[0042] Furthermore, the plate member feeding device 100 according to this embodiment also provides the following unique operational effects. As shown in FIG. 4(A), the intermediate outer peripheral gear 112 and the upper roll 102 are connected via an Oldham coupling 112B. Therefore, even if the driving force of the lower roll drive motor 110 is transmitted to the intermediate outer peripheral gear 112, a reaction force due to the driving force is not directly generated in the upper roll 102. In other words, although the rotational force of the lower roll drive motor 110 is transmitted to the upper roll 102, upward warping of the upper roll 102 is not generated. In other words, even if the driving force of the lower roll drive motor 110 is increased, the lower roll 101 and the upper roll 102 are maintained in a parallel state. As a result, the pushing force of the lower roll 101 and the upper roll 102 against the plate-like material M is uniform across the width direction of the plate-like material M. As a result, according to this embodiment, the conveying capacity of the feeding device 100 is improved, and skew of the plate-like material is suppressed, thereby improving the conveying accuracy of the plate-like material.

[0043] Furthermore, the plate member feeding device 100 according to this embodiment can improve work safety. 2, 3, and 4(A), by arranging the two drive sources, the lower roll drive motor 110 and the upper roll drive motor 130, on the same end, it is possible to consolidate the wiring for each drive motor, making it easier to ensure a work area around the feeding device 100. As a result, adjustment work can be carried out quickly and safely when material jams occur during production or when the plate-like member M meanders or moves obliquely.

[0044] Furthermore, in cases where the upper roll drive motor 130 cannot be used due to a problem or where it is desired to reduce power consumption by not using the upper roll drive motor 130 due to transport capacity considerations, the unique configuration of the plate member feed device 100 according to this embodiment makes it possible to easily remove the upper roll drive motor 130, and temporarily produce the device using only the lower roll drive motor 110. As a result, it is possible to contribute to the provision of a user-friendly device that can meet a wide range of user needs.

[0045] Furthermore, due to the unique configuration of the plate member feeding device 100 according to this embodiment, the upper roll drive motor 130 can be easily removed (or turned off), allowing the motor power to be optimized according to material specifications such as thickness, material quality, surface finish, and width dimension, as well as the material feeding conditions. The upper and lower motors do not need to have the same capacity, so it is also possible to change the power of one of the motors as needed.

[0046] In other words, in this embodiment, the upper roll drive motor 130 and the lower roll drive motor 110 are connected via the lower outer peripheral gear 111, the intermediate outer peripheral gear 112, and the upper outer peripheral gear 113, so the total capacity of each drive motor is distributed evenly to the lower roll 101 and the upper roll 102. This makes it possible to change the power of only one of the drive motors as needed. As a result, it is possible to contribute to the provision of a user-friendly device that can meet a wide range of user needs.

[0047] In this case, as shown in Figure 5(B), it is also possible to use an upper outer peripheral gear 113' with a larger outer diameter by matching the peripheral speed. Here, the module of this upper outer peripheral gear 113' is the same as that of the lower outer peripheral gear 111 and the intermediate outer peripheral gear 112, but the number of teeth is greater than that of the lower outer peripheral gear 111 and the intermediate outer peripheral gear 112. In this case, the axis distance (distance between X and Z) between the lower outer peripheral gear 111 and the upper outer peripheral gear 113' is larger than the axis distance (distance between X and Z) in the example of Figure 5(A). Therefore, when the motor capacity is increased, physical interference between the upper and lower drive motors can be avoided.

[0048] As shown in Figure 3, a screw jack 300 is provided on the underside of the plate-shaped material feeding device 100 to move the plate-shaped material feeding device 100 up and down relative to the press machine 10 when replacing molds or materials.

[0049] In such a case, if drive motors are arranged on both sides of the upper and lower rolls as in Patent Document 1 shown in Fig. 7, the electrical wiring and cooling medium piping (see symbol L' in Fig. 7) from one of the drive motors will pass near or below the screw jack 300. This makes it difficult to move the feed device 100 up and down.

[0050] In contrast to this, in this embodiment, as shown in Fig. 3, the lower roll drive motor 110 and the upper roll drive motor 130 are disposed together on the rear (back) side of the press machine 10 (the left end side in Fig. 3), so that they can be concentrated on the rear side of the press machine 10 without having to run electrical wiring, cooling medium piping, etc. (symbol L) near or below the screw jack 300. As a result, the up and down movement of the feed device 100 can be easily performed.

[0051] <Second embodiment> In the first embodiment, as shown in Fig. 5(A) and the like, an example has been described in which three gears are provided: a lower outer peripheral gear 111, an intermediate outer peripheral gear 112, and an upper outer peripheral gear 113. In contrast, in the second embodiment, the basic configuration is the same as that of the first embodiment, but as shown in Fig. 6(A), the lower outer peripheral gear 111, the intermediate outer peripheral gear 112, and the upper outer peripheral gear 113 are provided, and further, an idle gear 150 is provided between the intermediate outer peripheral gear 112 and the upper outer peripheral gear 113.

[0052] In this way, by interposing the idle gear 150 between the intermediate outer peripheral gear 112 and the upper outer peripheral gear 113, the rotation direction of the lower roll drive motor 110 that drives the lower outer peripheral gear 111 and the rotation direction of the upper roll drive motor 130 that drives the upper outer peripheral gear 113 are reversed.

[0053] The acceleration / deceleration torque caused by the rotation of the lower roll drive motor 110 generates a first reaction force on the apparatus main body frame 100A via the output shaft 110A. The acceleration / deceleration torque caused by the rotation of the upper roll drive motor 130 at this time is a torque in the opposite direction to the acceleration / deceleration torque of the lower roll drive motor 110 described above, and generates a second reaction force on the apparatus main body frame 100A via the output shaft 130A. These first and second reaction forces are in an opposite relationship to each other, similar to the relationship between the acceleration / deceleration torque of the lower roll drive motor 110 and the acceleration / deceleration torque of the upper roll drive motor 130. In other words, the first and second reaction forces are generated so that one cancels out the other. As a result, vibration and noise in the apparatus main body frame 100A can be suppressed.

[0054] Furthermore, in this embodiment, as shown in FIG. 6(A), the axial distance (distance between X and Z) between the lower outer peripheral gear 111 and the upper outer peripheral gear 113 can be increased compared to the axial distance (distance between X and Z) in the example of FIG. 5(A), which can also contribute to avoiding case interference that accompanies an increase in motor capacity.

[0055] Therefore, according to this embodiment, like the first embodiment, it is possible to provide a plate member feeder having a relatively simple, compact, and low-cost configuration, while reducing the installation space, improving the flexibility of the installation layout and ease of maintenance, and providing a high conveying capacity. Furthermore, it is possible to further contribute to providing a user-friendly device that can meet a wide range of user needs.

[0056] In this embodiment, too, it is possible to employ an upper outer peripheral gear 113' with a large outer diameter, similar to FIG. 5(B) according to the first embodiment.

[0057] <Third embodiment> In the first embodiment, as shown in Fig. 5(A) etc., the rotation centers X, Y, Z of the three gears, the lower outer peripheral gear 111, the intermediate outer peripheral gear 112, and the upper outer peripheral gear 113, are arranged on the same vertical straight line. In contrast to this, in the third embodiment, the basic configuration is the same as in the first embodiment, but as shown in Fig. 6(B), the rotation center Z of the upper outer peripheral gear 113 is not on the vertical straight line passing through the rotation centers X, Y of the two gears, the lower outer peripheral gear 111 and the intermediate outer peripheral gear 112, and the straight line connecting Z and Y is arranged so as to intersect the straight line passing through X and Y at a predetermined angle A.

[0058] Although the predetermined angle A is set to 90° in FIG. 6(B), this is just an example, and as long as it is physically possible, it may be smaller or larger than 90°, and is not particularly limited.

[0059] The third embodiment, which has such a configuration, allows for greater flexibility in the layout of the upper drive motor and lower drive motor, and therefore the plate-like material feed device. Therefore, like the first embodiment, it has a relatively simple, compact, and low-cost configuration, while reducing installation space and maintaining a high degree of freedom in the installation layout, and it is possible to provide a plate-like material feed device with high conveying capacity. Furthermore, it can further contribute to providing a user-friendly device that can meet a wide range of user needs.

[0060] In the above embodiments, a case has been described in which a rolled plate member is pulled out from the roll and sent to a press machine as a raw material. However, the present invention is not limited to this, and can also be applied to the transport of intermediate products (such as plate members punched by a press) between press machines. Furthermore, the present invention can be applied to any device that transports plate members, regardless of whether they are rolled up or not.

[0061] Furthermore, in the first and second embodiments, an example has been described in which the rotation centers X, Y, and Z of the three gears, the lower outer peripheral gear 111, the intermediate outer peripheral gear 112, and the upper outer peripheral gear 113, are arranged on the same vertical straight line, but the present invention is not limited to this, and it is sufficient that the rotation centers X, Y, and Z of the three gears are arranged on the same straight line, and the present invention can also be applied to cases in which the straight line is not vertical.

[0062] The embodiments of the present invention described above are merely examples for explaining the present invention, and various modifications can be made without departing from the scope of the present invention. [Explanation of symbols]

[0063] 10 Press Machine 100, 200 Plate-shaped member feeding device (plate-shaped member conveying device) 100A Equipment main frame (housing, etc.) 100B frame 101 Lower Roll 101A Lower roll rotation axis 101B Lower friction fastener 102 Upper Roll 102A Upper roll rotation axis 102B Lower friction fastener 102C Intermediate element 110 Lower roll drive motor 110A output shaft 111 Lower outer peripheral gear (lower gear) 112 Intermediate outer peripheral gear (intermediate gear) 112A Rotating shaft 112B Oldham coupling 113 Upper outer peripheral gear (upper gear) 102C Intermediate element 130 Upper roll drive motor 140 Lifting mechanism 150 Idle Gear M Plate-shaped material (sheet-shaped material)

Claims

1. A plate-like member feeding device that conveys a plate-like member by sandwiching it between a lower roll that is rotatably supported on a device body and a rotatable upper roll that is disposed parallel to the lower roll, a lower gear integrally provided on the rotation shaft of the lower roll; an intermediate gear that is meshed with the lower gear and is integral with the rotation shaft of the upper roll; an upper gear that meshes with the intermediate gear; a lower roll drive motor that is integrally attached to a rotation shaft of the lower roll and drives it to rotate; an upper roll drive motor that rotates and drives the upper gear; A plate-like member feeding device comprising:

2. 2. The plate member feeding device according to claim 1, wherein the lower roll drive motor and the upper roll drive motor are arranged on the same side of the lower roll and the upper roll.

3. The plate-like member feeding device according to claim 1, characterized in that the drive motor for the lower roll and the drive motor for the upper roll are located on the opposite side of the intermediate gear from the side on which the lower roll and the upper roll are located when viewed from a direction perpendicular to the rotation axis of the lower roll and the rotation axis of the upper roll.

4. 2. The plate-like member feeding device according to claim 1, wherein the upper roll and the intermediate gear are connected via an Oldham coupling.

5. 2. The plate-like member feeding device according to claim 1, wherein the rotation center of the lower gear, the rotation center of the intermediate gear, and the rotation center of the upper gear are arranged on the same straight line.

6. a straight line connecting the rotation center of the lower gear and the rotation center of the intermediate gear; a straight line connecting the rotation center of the intermediate gear and the rotation center of the upper gear; 2. The plate-like member feeding device according to claim 1, wherein the axes intersect at a predetermined angle.

7. 2. The plate-like member feeding device according to claim 1, wherein an idle gear is interposed between the intermediate gear and the upper gear.

8. 7. The plate-like member feeding device according to claim 1, wherein the lower gear, the intermediate gear, and the upper gear have the same module and the same number of teeth.

9. A plate-like member feeding device as described in any one of claims 1 to 6, characterized in that the lower gear and the intermediate gear have the same module and the same number of teeth, and the upper gear has the same module but a greater number of teeth than the lower gear and the intermediate gear.

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