180° work-piece reversing device

Abstract

To provide a 180° work-piece reversing device capable of efficiently reversing a work-piece by 180° without lifting it by a crane during work-piece reversing operation, and capable of safely reversing the work-piece by 180° even when it has an irregular shape.SOLUTION: A 180° work-piece reversing device is constituted so as to rotate a work-piece W in vertical attitude by 90°, then position it on a first support part 4A which is horizontally arranged so that the upside and downside are arranged in left and right, then horizontally move the work-piece W onto a second support part 4B horizontally arranged, and then rotate the second support part 4B by 90°, so that the work-piece W is reversed upside down.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a device for turning a workpiece 180 degrees. [Background technology]

[0002] A workpiece inversion device that inverts a workpiece 180 degrees is described, for example, in Japanese Utility Model Application Laid-Open Publication No. 57-3724 (Patent Document 1). Patent Document 1 states that "a rotating table 8 is provided on one of mutually orthogonally connected loading tables 1a and 1b, and rollers 9 are arranged on the rotating table 8." Through the process shown in "Figure 2" of Patent Document 1, the workpiece "motor frame 10" can be inverted upside down by 180 degrees.

[0003] Furthermore, Japanese Patent Laid-Open Publication No. 8-132485 (Patent Document 2) describes a "flat-type workpiece inversion device" that is configured so that a pair of die support plates can be driven independently and that can be placed compactly with the pair of die support surfaces laid horizontally when not in use. To invert a workpiece 180 degrees with this inversion device, as shown in Figure 11, the die is placed on one of the orthogonally arranged mounting surfaces, then inverted 90 degrees to position the die on the other mounting surface, the die is lifted up with a crane and rotated horizontally 180 degrees, then lowered onto the mounting surfaces, and the orthogonal mounting surfaces are again inverted 90 degrees in the opposite direction.

[0004] The steel material reversal device described in JP 2023-158987 A (Patent Document 3) rotates irregularly shaped workpieces such as H-shaped steel, I-shaped steel, channel steel, L-shaped steel, square pipes, etc., particularly long and heavy steel materials, by driving a chain that moves, rotating the irregularly shaped workpieces 180 degrees around the longitudinal axis. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 57-3724 [Patent Document 2] Japanese Patent Application Publication No. 8-132485 [Patent Document 3] Japanese Patent Application Publication No. 2023-158987 Summary of the Invention [Problem to be solved by the invention]

[0006] The system described in Patent Document 1 has the problem of a complex structure in which a rotating table is provided on one side of the loading table and rollers are arranged on the rotating table. In addition, if the workpiece has an irregular shape that is not a rectangular parallelepiped, such as a cylindrical "motor frame," there is a risk that it may roll off the rotating table of the loading table, posing a safety problem.

[0007] As shown in FIG. 11 of the conventional drawing, in the workpiece inversion device described in Patent Document 2, in order to invert the workpiece by 180 degrees, it is necessary to lift the workpiece with a crane and rotate it horizontally by 180 degrees during the inversion operation, which results in poor work efficiency.

[0008] The method described in Patent Document 3 uses a chain to turn an irregularly shaped workpiece 180 degrees, and there is a risk that the chain may break during the turning operation.

[0009] Therefore, an object of the present invention is to provide a 180-degree workpiece inversion device that can efficiently invert a workpiece 180 degrees during workpiece inversion work without lifting it with a crane, and can safely invert even irregularly shaped workpieces 180 degrees. [Means for solving the problem]

[0010] In order to achieve the above object, the present invention employs the following means: The 180-degree workpiece turning device is configured to turn a workpiece in an upside-down orientation by 90 degrees, position it on a horizontally arranged first support part so that the top and bottom are arranged left and right, move the workpiece horizontally onto a horizontally arranged second support part, and turn the second support part by 90 degrees to turn the workpiece upside down.

[0011] It is preferable that a horizontal moving means is provided for horizontally moving the workpiece on the first support portion onto the second support portion.

[0012] It is preferable that the first support portion and the second support portion are pivotally supported so as to be rotatable about a common horizontal axis so as to assume vertical and horizontal positions, and that a drive device is provided which rotates the first support portion and the second support portion integrally by 90 degrees and also rotates them individually.

[0013] A 90-degree workpiece inversion device having the first support portion and a 90-degree workpiece inversion device having the second support portion can be mounted on a base so that the first support portion and the second support portion are positioned horizontally facing each other.

[0014] It is preferable that a rectangular parallelepiped cover member is provided to cover the outer surface of the workpiece having an irregular shape other than a rectangular parallelepiped, and the workpiece covered with the cover member is held by the first and second support portions.

[0015] The horizontal moving means is preferably a roller.

[0016] The horizontal moving means may be an air ejection device.

[0017] The drive device is preferably driven by a motor.

[0018] The drive device may be driven by a cylinder. [Effects of the Invention]

[0019] According to the present invention, the workpiece is moved horizontally while being turned 180 degrees, so that the workpiece can be turned 180 degrees more efficiently and safely than in the conventional method. [Brief explanation of the drawings]

[0020] [Figure 1]FIG. 1 is a front view of a 180-degree workpiece turning device according to a first embodiment of the present invention. [Figure 2] FIG. 2 is an explanatory diagram showing a workpiece placed on the workpiece placement surface in the rear view of FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line BB in FIG. [Figure 5] Figure 5 is a process diagram that explains how to flip a workpiece 180 degrees from the state shown in Figure 2. In Figure 5(1), the workpiece to be flipped is set, in Figure 5(2), the entire flipper is flipped 90 degrees, in Figure 5(3), the second support part of the flipper is set horizontally, in Figure 5(4), the workpiece to be flipped is moved horizontally onto the second support part, in Figure 5(5), the workpiece is set along the first support part which is set vertically, and in Figure 5(6), the workpiece is flipped another 90 degrees to complete the 180-degree flip, the top and bottom of the workpiece are swapped, and the workpiece is flipped 180 degrees. [Figure 6] FIG. 6 is an illustration showing the bed of a lathe as being irregularly shaped. [Figure 7] FIG. 7 is an explanatory diagram showing an H-shaped steel beam as an irregular shape. [Figure 8] FIG. 8 is an explanatory diagram showing a different diameter member as an irregular shape. [Figure 9] FIG. 9 is a front view of a 180-degree workpiece turning device according to the second embodiment of the present invention. [Figure 10] Fig. 10 is a process diagram of a 180-degree workpiece inversion device according to a third embodiment of the present invention. In Fig. 10(1), the workpiece is set on the first 90-degree workpiece inversion device, in Fig. 10(2), it is inverted 90 degrees, in Fig. 10(3), the workpiece is moved onto the second inversion device, and in Fig. 10(4), the second inversion device is inverted 90 degrees, thereby inverting the workpiece 180 degrees. [Figure 11]Figure 11 is an explanatory diagram (explanatory diagram of the conventional method) showing the process of conventionally inverting a workpiece 180 degrees. In Figure 11(a), the mold is set, and the workpiece is inverted from Figure 11(b) to Figure 11(c), visually adjusted to stop the inversion at 75 to 80 degrees, in Figure 11(d), the workpiece mold is lifted up with a crane, in Figure 11(e), the workpiece lifted by the crane is rotated horizontally 180 degrees, in Figure 11(f), the workpiece mold is reset on the inverting machine, the inverting machine is reversed from Figure 11(g) to Figure 11(h), and the inversion is stopped when face A of the inverting machine becomes vertical. This procedure turns the workpiece 180 degrees. DETAILED DESCRIPTION OF THE INVENTION

[0021] The 180-degree workpiece inversion device of the present invention is configured to rotate a workpiece in an up-down position by 90 degrees, position it on a horizontally arranged first support part so that the top and bottom are arranged left and right, move the workpiece horizontally onto a horizontally arranged second support part, and rotate the second support part by 90 degrees to invert the workpiece up-down.

[0022] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0023] 1 is a front view of a first embodiment of a 180-degree workpiece inversion device. Note that this device has the same basic configuration as that described in Patent Document 2 (JP Patent Publication No. 8-132485), and therefore Patent Document 2 is incorporated herein by reference for detailed description.

[0024] In FIG. 1, the 180-degree workpiece turning device has a base frame 1, a support frame 2 fixed to this base frame 1, and a pivot shaft 3 with a horizontal axis provided on the upper part of this support frame 2.

[0025] A pair of support parts 4 (first support part 4A and second support part 4B) arranged perpendicular to each other are provided on this pivot shaft 3 so that they can rotate integrally by 90 degrees around a horizontal axis and can be individually moved between horizontal and vertical positions. Also provided is a drive device 5 that rotates the support parts 4 integrally or individually. This drive device 5 is driven by a motor 6.

[0026] The drive device 5, which changes the positions of the first support portion 4A and the second support portion 4B, has a first electric motor 6A and a second electric motor 6B that are individually mounted on the base frame 1. Sprockets 7A and 7B are mounted on the electric motors 6A and 6B via reducers, respectively. Roller gears 8A and 8B are mounted on the first and second support portions 4A and 4B, respectively, and the roller gears 8A and 8B mesh with the sprockets 7A and 7B.

[0027] Although not shown, the drive device 5 is provided with a control device that synchronously drives and rotates the first electric motor 6A and the second electric motor 6B to rotate the first support portion 4A and the second support portion 4B by 90 degrees while maintaining the orthogonal arrangement. The control device also drives and rotates the first electric motor 6A and the second electric motor 6B individually to rotate the first support portion 4A and the second support portion 4B by 90 degrees so that their positions can be changed between vertical and vertical positions.

[0028] The right side surface of the first support part 4A and the upper surface of the second support part 4B shown in Fig. 1 are used as a workpiece placement surface. A horizontal movement means 9 for moving the workpiece horizontally is provided on this workpiece placement surface.

[0029] In this first embodiment, the horizontal movement means 9 is composed of rollers 10. That is, a plurality of rollers 10 having horizontal axes are arranged in parallel on the workpiece placement surface. These rollers 10 rotate freely and push the workpiece placed on the rollers 10, thereby facilitating the horizontal movement of the workpiece.

[0030] The rollers 10 are long and span the entire width of the mounting surface. However, they may be short rollers arranged in a line or a staggered pattern. The rollers 10 are not limited to free rollers, and may include drive rollers as part of the rollers. If drive rollers are used, the workpiece can be moved horizontally automatically.

[0031] Fig. 2 is an explanatory diagram showing a workpiece W placed on the workpiece placement surface in the rear view of Fig. 1. The workpiece W is housed in a rectangular parallelepiped cover member 11, as shown in Figs. 3 and 4.

[0032] If the workpiece W is not a rectangular parallelepiped like a mold but has an irregular shape such as a cylinder, it is not possible to stably place the workpiece W on the placement surface. Also, it is difficult to move the workpiece W horizontally on the placement surface. Therefore, by storing the workpiece W in a rectangular parallelepiped cover member 11, it can be placed stably on the placement surface and horizontal movement becomes easier.

[0033] Therefore, the shape and configuration of the cover member 11 are not particularly limited as long as the workpiece W can be stably placed on the placement surface and can be easily moved in the horizontal direction.

[0034] 2 to 4 is an irregularly shaped workpiece W having a disk-shaped flange at the center of a cylindrical body with upper and lower end faces. The cover member 11 has a rectangular parallelepiped body 12 with open upper and lower ends, and square upper and lower covers 13 and 14 attached to the openings of the body 12. The upper and lower covers 13 and 14 are detachably attached to the body 12 with bolts 20.

[0035] As shown in FIG. 2, the workpiece W is covered with a cover member 11 and placed on the rollers 10 of the second support portion 4B, and the rollers 10 of the first support portion 4A are in contact with the side surfaces of the cover member 11.

[0036] Next, the process of turning the workpiece W shown in FIGS. 2 to 4 by 180 degrees using the 180-degree workpiece turning device will be described with reference to FIG.

[0037] FIG. 5 is a process diagram for turning the workpiece W in the state of FIG. 2 180 degrees, and the workpiece W is turned 180 degrees through the following steps (1) to (6).

[0038] (1) Setting the workpiece A cover member 11 containing a workpiece W is placed on one of the horizontal support parts (second support part 4B) arranged orthogonally. The rollers 10 of the first support part 4A abut against the side surface of the cover member 11.

[0039] (2) 90 degree flip The pair of support parts 4 rotate integrally by 90 degrees, and the workpiece is placed on the other support part (first support part 4A).

[0040] (3) Level the inverting device The position of one of the vertical support portions (second support portion 4B) is individually changed to a horizontal position.

[0041] (4) Horizontal movement of the workpiece The workpiece W on the other support part (first support part 4A) is moved horizontally onto the one support part (second support part 4B). A stopper 21 is provided at the end of the support part 4 to prevent the workpiece W from moving horizontally and falling.

[0042] (5) Set The other support portion (first support portion 4A) is individually changed in position to be vertical.

[0043] (6) 180 degree flip completed The support parts 4 are rotated integrally by 90 degrees, and the workpiece W is placed upside down on the other support part (first support part 4A).

[0044] As described above, according to the embodiment of the present invention, there is no need to lift the workpiece with a crane during the 180-degree inversion operation as in the conventional case, so the workpiece can be inverted 180 degrees safely and efficiently.

[0045] 6 shows a lathe bed W as an example of an irregularly shaped workpiece W. By covering a portion of the lathe bed W with a cover member 11 as shown in the figure, the workpiece can be turned upside down using the 180-degree workpiece turning device of the present invention.

[0046] That is, by covering the longitudinal middle portion of the lathe bed W with the cover member 11 and placing this cover member 11 on the mounting surface of the support part 4 of the reversing device, the workpiece can be turned over 180 degrees. In this case, the shape and structure of the cover member 11 that covers the lathe bed W may be any shape and structure that allows the workpiece W to be stably placed on the mounting surface and facilitates horizontal movement.

[0047] 7 shows an example of an H-shaped workpiece W having an irregular shape. By covering the middle of the long H-shaped workpiece W with a cover member 11, the workpiece can be turned upside down using the 180-degree workpiece turning device of the present invention. The shape and structure of the cover member 11 may be any shape and structure that allows the workpiece W to be stably placed on the placement surface and facilitates horizontal movement.

[0048] Figure 8 shows an example of a workpiece W having an irregular shape, which is a different diameter member W. Figure 8(a) is a perspective view of the cover member 11 storing the workpiece W, (b) is a front view, and (c) is a cross-sectional view taken along line CC in (b). The figure shows the structure of the cover member 11 for turning the workpiece W 180 degrees from a state in which the small diameter portion is on top to a state in which the large diameter portion is on top.

[0049] The cover member 11 has a rectangular parallelepiped body 12 with open top and bottom ends, and a square upper lid 13 and lower lid 14 attached to the opening of the body 12. The upper lid 13 and lower lid 14 are detachably attached to the body 12 with bolts 20. Four spacers 24 are erected on the lower lid 14, and the large diameter portion of the workpiece W is placed on the spacers 24. Another spacer 24 is erected on the top surface of the small diameter portion of the workpiece W, and the upper lid 13 abuts on top of that.

[0050] By storing such a workpiece W having a different diameter in the cover member 11, the workpiece W can be stably turned over 180 degrees.

[0051] FIG. 9 shows a 180-degree workpiece inversion device according to a second embodiment of the present invention.

[0052] The difference from the first embodiment is that the drive device 5 is changed from being driven by a motor to being driven by a cylinder 15. The other configurations are almost the same as those of the first embodiment.

[0053] The cylinder 15 includes a first hydraulic cylinder 15A that rotates the first support portion 4A, and a second hydraulic cylinder 15B that swings the second support portion 4B.

[0054] An end of the first hydraulic cylinder 15A is pivotally supported on the support frame 2, and a piston rod 16 is pivotally supported on the first support part 4A. By extension and retraction of the piston rod 16, the position of the first support part 4A can be changed between a vertical position and a horizontal position around the pivot shaft 3. The position of the second support part 4B can also be changed between a vertical position and a horizontal position by extension and retraction of the second hydraulic cylinder 15B.

[0055] The cylinder 15 is controlled via a control device (not shown) so that the first support portion 4A and the second support portion 4B can rotate independently and can rotate by 90 degrees while maintaining a mutually orthogonal state.

[0056] The basic structure of the cylinder-driven device is almost the same as that described in Japanese Patent Laid-Open Publication No. 8-80531, and therefore the detailed description therein is incorporated by reference.

[0057] FIG. 10 shows a process diagram of a 180-degree workpiece turning device according to the third embodiment of the present invention.

[0058] In this embodiment, two 90-degree inversion devices 22 are arranged on a base 23 .

[0059] That is, a 90-degree workpiece inversion device 22 having the first support portion 4A and a 90-degree workpiece inversion device 22 having the second support portion 4B are provided on a base 23 so that the first support portion 4A and the second support portion 4B are positioned horizontally facing each other.

[0060] In FIG. 10(2), rollers 10, which are horizontal moving means 9, are provided on the mounting surface of the horizontal support portion.

[0061] In addition, since the basic structure of the 90-degree inversion device 22 used in this embodiment is almost the same as that of conventional ones (for example, those described in Patent Publication No. 2021-35883, etc.), detailed explanations will be omitted and these publications will be cited.

[0062] The present invention is not limited to the embodiments. For example, the horizontal movement means 9 is not limited to rollers, and may be a multiplicity of balls arranged on a mounting surface. Furthermore, an air ejection device (such as the "XY plane free movement means" described in JP 2019-34339 A) can be used as the horizontal movement means 9.

[0063] Although not shown, the horizontal movement means 9 can have a push plate that moves the workpiece W horizontally, and a movement device provided on the side of the support part 4 to move the push plate horizontally. The movement device has a cylinder provided on the support frame 2 on the side of the support part 4, and a piston rod provided in the cylinder so as to be able to expand and contract, and a push plate is connected to this piston rod, and the push plate presses the side of the workpiece W, thereby moving the workpiece W on the rollers 10 horizontally.

[0064] The moving device may also have a pair of left and right sprockets (one of which is a drive sprocket) mounted on the support frame 2 on the sides of the support part 4, and an endless chain looped between the sprockets, with a push plate connected to the chain.

[0065] By using such horizontal moving means 9, it is possible to easily and safely move a heavy workpiece W such as a lathe bed or H-shaped steel beam horizontally.

[0066] The scope of the present invention is defined by the claims, not by the above description, and includes all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0067] double work 1 base frame 2 Support Frame 3 Pivot 4 Support part (4A: 1st support part, 4B: 2nd support part) 5. Drive unit 6 motor (6A: first electric motor, 6B: second electric motor) 7 sprockets (7A, 7B) 8 Roller Gears (8A, 8B) 9 Horizontal movement means 10. Laura 11 Cover member 12 Torso 13 Top lid 14 Lower lid 15 Cylinder (15A: First hydraulic cylinder, 15B: Second hydraulic cylinder) 16 Piston rod 20 volts 21 Stopper 22 90 degree workpiece inversion device 23 Foundation 24 spacer

Claims

1. A 180-degree workpiece inversion device configured to rotate a workpiece in an up-down orientation by 90 degrees, position it on a horizontally arranged first support part so that the top and bottom are arranged left and right, move the workpiece horizontally onto a horizontally arranged second support part, and rotate the second support part by 90 degrees to invert the workpiece upside down.

2. 2. The 180-degree workpiece inversion device according to claim 1, further comprising a horizontal moving means for horizontally moving the workpiece on the first support portion onto the second support portion.

3. the first support portion and the second support portion are pivotally supported to be rotatable about a common horizontal axis so as to assume a vertical posture and a horizontal posture; 3. A 180-degree workpiece inversion device according to claim 2, further comprising a drive device for rotating the first support portion and the second support portion integrally by 90 degrees and for rotating them individually.

4. 3. The 180-degree workpiece inversion device according to claim 2, wherein the 90-degree workpiece inversion device having the first support portion and the 90-degree workpiece inversion device having the second support portion are provided on a base so that the first support portion and the second support portion are positioned horizontally facing each other.

5. 3. The 180-degree workpiece inversion device according to claim 2, further comprising a rectangular parallelepiped cover member for covering the outer surface of a workpiece having an irregular shape other than a rectangular parallelepiped, and the workpiece covered with the cover member is held by the first and second support portions.

6. 3. A 180-degree workpiece inversion device according to claim 2, wherein said horizontal moving means is a roller.

7. 3. A 180-degree workpiece inversion device according to claim 2, wherein said horizontal moving means is an air ejection device.

8. 4. A 180-degree workpiece inversion device according to claim 3, wherein the drive device is driven by a motor.

9. 4. A 180-degree workpiece inversion device according to claim 3, wherein the drive device is driven by a cylinder.

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