JP4207172B2 - Heavy object inversion method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a weight reversing method and apparatus for safely reversing a heavy object by 180 degrees.
[0002]
[Prior art]
The inventor of the present invention has previously proposed a heavy-weight rotating device capable of reversing a heavy object 180 degrees using two reversing plates (Japanese Patent Laid-Open No. 5-330619).
[0003]
[Problems to be solved by the invention]
The prior invention has been put into practical use and has increased effectiveness, but two reversing plates are arranged at 90 degrees with each other and rotated 90 degrees as they are to transfer a heavy object from one reversing plate to the other reversing plate. As a result, the structure becomes complicated, the apparatus becomes larger, and the cost increases.
[0004]
[Means for solving the problems]
In the present invention, when the reversing plate is rotated 90 degrees or more and the heavy object is likely to be displaced, the reversing plate is fixed with two reversing plates and fixed, so that the heavy object is displaced or unstable during reversal. This has been prevented.
[0005]
That is, in the method invention, the work 1 is placed on one reversing plate 2, the other reversing plate 3 is rotated, then the reversing plate 2 and the reversing plate 3 are tilted together, and the work 1 is turned on the reversing plate 2. 3, the reversing plates 2 and 3 are simultaneously rotated to the reversing plate 3 side at the same angular speed while the work 1 is being fastened, and reach the symmetric position with the original wrinkling position of the work 1. Then, the reversing plate 2 is reversely rotated to return to the old position, and the reversing plate 3 is a heavy object reversing method characterized in that the tilt can be returned to the old position. The angle and inclination of the reversing plate are adjusted according to the thickness of the workpiece 1.
[0006]
Next, in the invention of the apparatus, cam plates 5 and 6 for moving the reversing plates 2 and 3 to the common central shaft 4 are rotatably mounted, and the intermediate portions 2a of the reversing plates 2 and 3 are attached to the cam plates 5 and 6, respectively. Pins are fixed to 3a, and the bases of the arm rods 7 and 8 are respectively fixed at a slight distance from the pins, and the rods 11 and 12 of the tilt cylinders 9 and 10 are attached to the distal ends of the arm rods 7 and 8, respectively. The heads (or rods) of the tilting cylinders 9 and 10 are attached to the central shaft 4 (also the cam plates 5 and 6), and the cam plates 5 and 6 are attached to the cam plates 5 and 6, respectively. A heavy article reversing device characterized in that rollers 13a and 14a attached to a driving means are brought into contact with each other. The roller contact edge of the cam plate is formed in an involute curve so as to rotate the reversing plate at a constant speed, the drive means is a fluid pressure cylinder, and a roller is attached to the rod end of the fluid pressure cylinder. .
[0007]
The driving means is a sector gear and a pinion, and a thickness adjusting material made of wood, rubber, plastic or the like is interposed between the reversing plates 2 and 3. Further, a workpiece fall prevention member is connected to the rotating shaft side ends of the reversing plates 2 and 3.
[0008]
In the above, when the thickness of the work is thinner than planned, the thickness adjusting plate is to be used. One of the reversing plates 2 is further rotated, and the reversing plates 2 and 3 are firmly and securely attached to the work. Then, both the reversing plates 2 and 3 are rotated simultaneously at the same angular speed and at the same angular velocity (with the work attached), and the work is moved to the reversing plate 3 without difficulty.
[0009]
In the above, if the frictional force between the workpiece and the reversing plate is larger than the weight of the workpiece, there is no possibility of the workpiece shifting during the movement of the reversing plate before the attachment (the work can be prevented from slipping). .
[0010]
In the above invention, since each reversing plate is attached by the cam plate and the armband, its posture is controlled by the movement of the cam plate and the movement of the armband.
[0011]
However, the cam plate uses an involute curve, and the two reversing plates can be rotated with the same fitting posture by moving the roller shafts at the same speed and the same distance.
[0012]
Further, since a connecting member such as a chain or a wire and a return member made of power (hydraulic cylinder, spring, etc.) are connected to a part of the reversing plate, even if the reversing plate rotates 90 degrees or more, It can be easily returned to the old position.
[0013]
The number of cam plates in the above may be one or a plurality of reverse plates, but two are normal. The power in the invention can be any linear movement power such as a hydraulic cylinder, air cylinder, nut and screw, rack and pinion, etc., but from the point of unified control, a hydraulic mechanism with an automatic control function is used. Influential.
[0014]
In the above, the fluid pressure cylinder is a hydraulic cylinder or an air cylinder. Use hydraulic cylinders when large forces are required.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
The present invention is a method of rotating two reversing plates by 90 degrees or more and less than 180 degrees, rotating the reversing plates in a state where the work is clamped by two reversing plates, and reversing the work by 180 degrees.
[0016]
In this invention, the posture of the reversing plate is controlled by the cam plate and the armband in order to perform the above operation, and the work can be attached by rotating the reversing plate freely between 90 degrees and less than 180. The two reversing plates can rotate at the same angular velocity at the same time, and can also rotate at different angles separately.
[0017]
Each reversing plate can be controlled in rotation and posture by, for example, a hydraulic cylinder. Therefore, in order to reverse heavy objects of the same shape, automatic operation can be performed according to a predetermined sequence, and different operations (adjustments) can be performed for each workpiece. is there. In short, the hydraulic circuit and other power controls are automated, a program for each workpiece is assembled, and the program is selected every time the shape is confirmed by the sensor.
[0018]
[Example 1]
An embodiment of the method of the invention will be described with reference to FIG. First, the work 1 is loaded and placed on the reversing plate 2, and then the reversing plate 2 is rotated by 20 to 30 degrees. On the other hand, the reversing plate 3 is rotated about 150 degrees to attach the work 1 on the reversing plate 2. After confirming that it is securely attached, if the reversing plates 2 and 3 are rotated 120 degrees to 130 degrees toward the reversing plate 3 (substantially symmetrical with the initial rotation position of the reversing plate 2), then stop and reverse The plate 2 is reversely rotated (about 150 degrees) to return to the old position, and the reversing plate 3 is rotated with the work 1 placed thereon to return to the old position, thereby completing the reversal of the work 1.
[0019]
In the above embodiment, the initial rotation of the reversing plate 2 and the rotation of the reversing plate 3 can be performed at the same time. However, after the reversing plate 2 is stopped (position is determined), the reversing plate 3 is brought into contact with the workpiece. Therefore, it is possible to secure the work 1 with a slight time lag.
[0020]
In addition, it is necessary to use a return member to return from the position where the reversing plates 2 and 3 are rotated by 90 degrees or more, and when pulling by the return member is necessary until the position corresponding to 90 degrees from the initial position is exceeded. is there. The return member may pull the chain with a hydraulic cylinder (or air cylinder) or pull the wire with a spring, but in the case of a large reversing plate, the operation is more reliably performed using a hydraulic cylinder. A motor system is also possible.
[0021]
The reversing operation of the reversing plate is the same whether the reversing plate 2 is moved to the reversing plate 3 or vice versa.
[0022]
[Example 2]
An embodiment of the apparatus of the present invention will be described with reference to FIGS. The bases 5a and 6a of the involute curve cam plates 5 and 6 for rotating the reversing plates 2 and 3 are rotatably attached to the common central shaft 4 installed on the machine base 21, and the tips of the cam plates 5 and 6 are rotated. The parts 5b and 6b are attached to the intermediate parts 2a and 3a of the reversing plates 2 and 3 by pins 15 and 16, and the intermediate parts 2a and 3a of the reversing plates 2 and 3 are slightly spaced from the pins 15 and 16 The bases of the arm rods 7 and 8 are fixed, and the tip ends of the rods 11 and 12 of the tilt cylinders 9 and 10 are connected to the tip portions of the arm rods 7 and 8 by pins 17 and 18, respectively. 10 is attached to the central shaft 4, and one ends of the chains 19 and 20 are attached to the distal ends of the arm rods 7 and 8. The other ends of the chains 19 and 20 are rods of the hydraulic cylinders 22 and 23. Attach to 24 and 25. The chain 19, 20, the rods 24, 25 and the hydraulic cylinders 22, 23 constitute a return member.
[0023]
Rollers 13a and 14a of cam followers 13 and 14 are brought into contact with outer edges of the cam plates 5 and 6, and the cam followers 13 and 14 are fixed to ends of rods 28 and 29 of hydraulic cylinders 26 and 27, respectively. 26 and 27 are installed substantially horizontally in a direction perpendicular to the central axis 4. In FIG. 6, reference numeral 42 denotes a connection sheet for preventing dropping or the like provided at the end of the reversing plates 2 and 3.
[0024]
The operation of the embodiment will be described. After the workpiece 1 is placed on the reversing plate 2 in FIG. 7 (FIG. 7A), the reversing plate 3 is rotated as shown by arrow 30 (FIG. 7B), and then the reversing plates 2 and 3 are moved to the arrows. Rotate as shown in FIGS. 31 and 32 (FIG. 7C), and further move the reversing plates 2 and 3 as shown by arrows 33 and 34, so that the center line 41 of the workpiece 1 and the reversing plates 2 and 3 The center is matched (FIG. 7 (d)). In this case, the chain 20 in FIG. 5 is pulled in the direction of the arrow 36, and the cam plate 6 and the roller 14a of the cam follower 14 are brought into close contact with each other to prevent the reversing plate 3 from falling. Next, the reversing plates 2 and 3 are simultaneously rotated in the direction of the arrow 35 at a constant speed to a position symmetrical to the initial attachment position (FIG. 7E).
[0025]
In the above, when the workpiece is relatively thin, a thickness adjusting member 43 made of wood, rubber, plastic or the like is interposed (FIG. 7C).
[0026]
Next, when the reversing plates 2 and 3 are rotated in the directions indicated by arrows 37 and 38 to return to the old positions (FIG. 7A), the reversal of the work 1 is finished. In the figure, reference numerals 39 and 40 denote bellows covers for closing gaps between the machine base 21 and the reversing plates 2 and 3.
[0027]
The reversing plates 2 and 3 are operated by the tilting cylinders 9 and 10 and the hydraulic cylinders 22, 23, 26 and 27, but other powers can be used.
[0028]
The description of the operation of the reversing plates 2 and 3 will be made in the reverse order when the work 1 is reversed from the reversing plate 2 to the reversing plate 3 from the reversing plate 3 to the reversing plate 2. Is omitted.
[0029]
Further, the relationship between the hydraulic cylinders and the control of the hydraulic cylinders are the circuits that have been used in the past and the circuit for the newly installed hydraulic cylinder of the present invention is added.
[0030]
[Example 3]
In the embodiment of FIG. 8, the sector gear 44 and the pinion 45 are engaged with each other in place of the cam plates 5 and 6 of the above embodiment, and the pinion 45 is attached to the end of the rod 47 of the hydraulic cylinder 46. According to this embodiment, by moving the rod 47 in the direction of the arrow 48 or 49, the sector gear 44 rotates in the direction of the arrow 50 or 51, and the reversing plate is raised and lowered.
[0031]
【The invention's effect】
In the present invention, since the work is rotated after the work is attached by the reversing plate, there is no possibility that the work is displaced during the rotation or the posture is not changed. In addition, since the workpiece does not move during operation, there is a risk prevention effect.
[0032]
Furthermore, since a drive source such as a hydraulic pressure is used, there are various effects such as being able to adopt a usage method adapted to the place of use, such as being capable of fully automatic operation and partially performing manual operation.
[Brief description of the drawings]
FIG. 1 is a block diagram of an embodiment of the method of the present invention.
FIG. 2 is a side view in which a part of the embodiment of the apparatus is omitted.
FIG. 3 is a plan view in which a part is omitted.
FIG. 4A is a side view in which a part is also omitted.
(B) The same side view.
FIG. 5 is an explanatory view showing a work attachment state.
FIG. 6 is a partially enlarged view showing the mutual relationship of the reversing plates.
FIG. 7 is an explanatory view showing the operation in the same manner, and (a) a workpiece placement diagram;
(B) 90 degree | times rotation figure of one inversion board.
(C) The figure which made both inversion plates oppose (parallel) (d) The figure which attached the workpiece | work.
(E) The figure rotated with the work attached.
FIG. 8 is an explanatory view in which a part of an embodiment using a sector gear instead of the cam plate is omitted.
[Explanation of symbols]
1 Workpiece 2, 3 Reversing plate 4 Center shaft 5, 6 Cam plate 5a, 6a Base portion 5b, 6b Tip portion 7, 8 Armband 9, 10 Tilt cylinder 11, 12 Rod 13, 14 Cam follower 13a, 14a Rollers 15, 16 , 17, 18 Pin 19, 20 Chain 21 Machine base 22, 23, 26, 27, 46 Hydraulic cylinder 24, 25, 28, 29, 47 Rod 39, 40 Bellows cover 42 Connection sheet 43 Adjustment material 44 Fan gear 45 Pinion

Claims (8)

Cam plates (5) and (6) for moving the two reversing plates (2) and (3), respectively. The reversing plates (2) and (3) are rotatably attached to the front ends, respectively. Cam plates (5), (6) rotatably attached to a central axis (4) having a common end side;
Two first drive means for rotating the reversal plates (2), (3) on the tip sides of the cam plates (5), (6), respectively;
Two second drive means for rotating the two cam plates (5), (6) around the central axis (4);
Using a heavy object reversing device capable of rotating the two reversing plates (2), (3) by 90 degrees or more and less than 180 degrees around the central axis (4),
At work with (1) to one of the reversing plate (2) above, to rotate the other of the reversing plate (3), then the reversing plate (2), by rotating reversing plate (3) both the workpiece After the center line (41) of (1) is aligned with the centers of the reversing plate (2) and reversing plate (3) and the workpiece (1) is attached by the reversing plates (2) and (3) The reversing plates (2) and (3) are simultaneously rotated to the reversing plate (3) side at the same angular velocity while the work (1) is attached, and symmetrical with the original attachment position of the work (1). When the position is reached, after the rotation of the reversing plates (2) and (3) is temporarily stopped, the reversing plate (2) is reversely rotated to return to the old position. A heavy object reversal method characterized by rotating.   The method for reversing a heavy article according to claim 1, wherein the angle of the reversing plate (2) at the initial attachment position of the work (1) is adjusted by the thickness of the work (1).   Cam plates (5) and (6) for moving the reversing plates (2) and (3) to a common central axis (4) are rotatably mounted, and the reversing plates (5) and (6) are attached to the reversing plates (5) and (6). 2) and (3) are pin-fixed to the intermediate portions (2a) and (3a), and the base portions of the armbands (7) and (8) are respectively fixed at a slight distance from the pins. 7), the rods (11), (12) (or head) of the tilt cylinder (9), (10) are connected to the tip of the tilt cylinder (9), (10) with a pin, and the tilt cylinders (9), (10 ) Head (or rod) is attached to the central shaft (4) (also cam plates (5) and (6)), and the cam plates (5) and (6) are rollers (1) attached to driving means, respectively. 13a), a heavy object reversing device characterized by contacting (14a).   4. The heavy article reversing device according to claim 3, wherein the roller contact edge of the cam plate is formed in an involute curve so as to rotate the reversing plate at a constant speed.   4. The heavy article reversing device according to claim 3, wherein the driving means is a fluid pressure cylinder, and a cam follower is attached to a rod end of the fluid pressure cylinder.   4. The heavy article reversing device according to claim 3, wherein the driving means is a sector gear and a pinion.   4. The heavy article reversing device according to claim 3, wherein a thickness adjusting material made of wood, rubber, plastic or the like is interposed between the reversing plates (2) and (3).   4. The heavy article reversing device according to claim 3, wherein a workpiece fall prevention member is connected to the rotating shaft side end of the reversing plates (2), (3).

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