JP2004277137A - Board reversing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a board reversing device convenient in direct transfer/take-out by a fork lift, capable of surely reversing an arbitrary number of boards. <P>SOLUTION: This board reversing device has a base 11 fixed on a ground; a rotary frame 2 rotatably supported by the base 11 with a pair of rotary shafts 23 as centers, and having a hollow part for taking in and out an arbitrary number of boards B with heavy weight; a table elevating machine 3 affixed to one side 22 of the rotary frame 2, and moving a table 34 to nip an arbitrary number of boards B by the table 34, and a geared reversing motor 4 for reversing the rotary shaft 23. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a board reversing device for reversing a building material board as needed at a construction site that is a transport destination when shipping a building material board such as an outer wall from a factory by truck, and more specifically, The present invention relates to a board reversing device capable of reversing a required number of sheets at the time of shipment.
[0002]
[Prior art]
Building material boards such as exterior wall panels, gypsum boards, particle boards, door frames, etc. are completed by spraying a foaming agent on the surface to be found (front side of the board) or attaching a decorative board. The sticker is on top. At the factory, a plurality of boards are stacked and stored in a yard with their finds facing up, transported by a forklift as needed, and stacked on a truck by a crane. As a result, boards stacked on trucks usually have their heads facing up.
[0003]
On the other hand, at a construction site, it is necessary to attach a screw or the like to the back of the building material board for attachment to the main body, and at that time, it is necessary to invert the building material board. Conventionally, this reversing operation has been performed manually on site, but a typical building board has a size of 75 * about 600 * 3200 and a weight of about 120 kg, which is a difficult manual operation. This problem is described in Patent Document 1.
In addition, when the prior art search was extended to fields with similar technical issues, as a device to turn over the board during the manufacture of the board in the factory, a device that loads the board into the reversing device from the longitudinal direction and turns it 180 degrees It was described in Patent Document 2.
[0004]
[Patent Document 1]
Utility Model No. 2584064 (Paragraphs (0001) to (0006))
[Patent Document 2]
Japanese Utility Model Application Laid-Open No. 58-191128 (Pages 1 and 2, FIGS. 1 and 3)
[0005]
[Problems to be solved by the invention]
However, the conventional board reversing device described in Patent Document 2 has the following problems.
(1) In a normal shipping operation, several to about ten boards are collectively loaded on a truck. Therefore, if any number of boards of 10 or less can be reversed at a time, the working efficiency is high and it is convenient. However, in the reversing device described in Patent Literature 2, there is a problem that work efficiency is poor because only one building material panel can be reversed.
Here, when trying to reverse an arbitrary number of sheets, there is a problem that the structure of the reversing device becomes complicated because the board is heavy.
[0006]
(2) In the reversing device described in Patent Literature 2, loading and unloading to and from the device are performed by a transport conveyor. However, at a shipping site, the transport is usually performed by a forklift. I needed to be.
At the shipping site, it is also possible to use a conveyor to move the board in and out of the board reversing device, and to move the conveyor and forklift in and out. There was only a problem that cost increased.
[0007]
Therefore, an object of the present invention is to provide a board reversing device that can reliably reverse an arbitrary number of boards and is easy to use for direct loading / unloading with a forklift.
[0008]
[Means for Solving the Problems]
The board reversing device of the present invention has the following configuration.
(1) A base fixed to the ground, and a rotary frame having a hollow portion rotatably supported on the base so as to be rotatable about a pair of rotary shafts and carrying an arbitrary number of heavy boards. A holding means fixed to one side of the rotating frame for moving the pressing member to hold an arbitrary number of boards with the pressing member, and a reversing motor for reversing the rotation axis.
(2) a base fixed to the ground, a rectangular rotating frame having a hollow portion rotatably supported on the base around a pair of rotating shafts, and having a heavy board carried in and out, A state in which the expansion / contraction mechanism is provided with a holding means having an expansion / contraction mechanism for expanding / contracting the moving / holding part and a reversing motor for reversing the rotation axis with respect to a fixed part fixed to the inner surface of one side of the rotating frame, and the expansion / contraction mechanism is contracted. Thus, the center line of the pair of rotating shafts is located on the intermediate surface between the surface of the movable holding portion and the surface facing the inner surface of one side provided with the holding means of the rotating frame.
[0009]
(3) In the board reversing device described in (2), a retaining plate is provided on a surface where the movable holding portion contacts the board and on a surface facing the board.
(4) In any one of the board reversing devices according to any one of (1) to (3), the extension mechanism has a unit for detecting a force for clamping the board.
[0010]
Next, the operation of the reversing board having the above configuration will be described.
In board manufacturing factories, finished boards are stored in piles in a yard near the truck yard with the header facing upward. Then, the required number of sheets from the construction site is loaded on the truck.
At this time, depending on the number of boards to be shipped, the work efficiency is good if any number of boards from 1 to 10 are simultaneously inverted. In the present invention, if an arbitrary number of boards are placed on a rotating frame by a foot lift, a plurality of boards can be inverted at a time while being held by a holding means with a force of a predetermined value or more.
[0011]
For example, when a request for 16 boards is made, the operator first transports 10 boards by a forklift. At this time, the surface of the rotating frame of the board reversing device facing the inner surface of one side provided with a commercially available table elevator as the holding means is horizontally horizontal, and the table elevator is suspended from the upper surface. On the opposing surfaces, for example, three retainers are fixed with an interval at which a fork of a forklift can be inserted. Using a forklift, insert the ten boards into the rotating frame and place them on the retainers.
[0012]
After retracting the forklift, the operator turns on the switch. The board reversing device translates the table of the table elevator, and the three retainers fixed to the table surface, which is the moving holding portion, hold down the uppermost surface of the ten boards with a predetermined force or more. Hold the boards together. Then, the pressure holding the board is detected, and if the pressure is equal to or higher than a predetermined pressure, the reversing motor is rotated to rotate the rotary frame 180 degrees about the rotation axis. With this, the ten boards are in a state where their finds face downward. Then, the table is moved to a state where the table elevator is contracted to release the clamping.
[0013]
At this time, the upper surface of the table, that is, the lowermost surface of the board, is exactly the same height as the facing surface. Therefore, the forklift can directly enter the fork into the rotating frame without changing the height of the fork when the forklift is carried. Then, the ten boards are lifted with a fork, moved to the truck, and loaded on the truck.
[0014]
Next, the operator inverts the six boards, but the same until the board is inserted into the rotating frame. The table elevator moves the table to a position where the table holds the board, and holds the board with a predetermined force or more to hold the six boards together. Then, the pressure holding the board is detected, and if the pressure is equal to or higher than a predetermined pressure, the reversing motor is rotated to rotate the rotary frame 180 degrees about the rotation axis. The six boards are now in a state where the finds face downward. Then, the table is moved to a state where the table elevator is contracted to release the clamping.
[0015]
At this time, the upper surface of the table, that is, the lowermost surface of the board, is exactly the same height as the facing surface. Therefore, the forklift can directly enter the fork into the rotating frame without changing the height of the fork when the forklift is carried. Then, six boards are lifted with a fork, moved to a truck, and loaded on the truck.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the board reversing device according to the present invention will be described below with reference to the drawings. FIG. 1 is a front view of the board reversing device 1, FIG. 2 is a plan view thereof, and FIG. 3 is a right side view of FIG.
Two uprights 12, 13 of a base 11 fixed on the ground are fixed vertically. A pair of rotating shafts 23 are rotatably supported by the vertical columns 12 and 13 via bearings 26, respectively. The inner end surfaces of the pair of rotating shafts are fixed to the outer surfaces of both side plates 24 of the rotating frame 2. That is, the rotating frame 2 is rotatably supported on the base 11 by the rotating shaft fixed to the both side plates 24.
[0017]
The rotating frame is formed in a rectangular shape by an upper plate 22, a pair of side plates 24, and a lower plate 21, and has a hollow portion inside. On the inner surface of the upper plate 22, a fixing portion 41 of a commercially available table lift 3 as a holding means is fixed. The fixed portion 41 includes a fixed rotation support portion 37 that can rotate only, and a sliding rotation support portion 39 that can rotate and slide. One end of the link 32 is rotatably supported by the fixed rotation support portion 37. One end of the link 33 and the cylinder end of the hydraulic cylinder 31 are slidably and rotatably supported by the slidable support 39.
[0018]
In addition, there is a table 34 which is a moving holding portion in parallel with the fixed portion 41. The table 34 has a fixed rotation support 38 that can rotate only, and a sliding rotation support 40 that can rotate and slide. The other end of the link 33 is rotatably supported by the fixed rotation support portion 38. The other end of the link 32 is slidably and rotatably supported by the sliding rotation support portion 40. Further, a rod tip portion 36 of the hydraulic cylinder 31 is rotatably connected to an intermediate portion of the link 32. On the surface (the lower surface in FIG. 1) of the table 34, three retainers 35 are fixed. Rubber is attached to the surface of the retainer 35 to increase friction.
The space between the three retainers 35 is sufficiently larger than the width of one fork of the forklift.
The table lift 3 moves the table 34 in parallel with the fixed part 41 by driving the hydraulic cylinder 31.
[0019]
On the other hand, three retainers 25 are fixedly provided on the upper surface of the lower plate 21, that is, on the surface of the upper plate 22 that faces the surface on which the table elevator 3 is attached. Rubber is attached to the surface of the retainer 25 to increase friction.
The space between the three retainers 25 is sufficiently larger than the width of one fork of the forklift.
The other end of the rotating shaft 23 fixed to the right side plate 24 in FIG. 1 is connected to the output shaft of the reversing geared motor 4 via a coupling. The output shaft of the reversing geared motor 4 is set to rotate at a low speed so that it takes about 45 seconds for the reversing by 180 degrees.
[0020]
Next, the accessory equipment of the board reversing device 1 will be described. FIG. 6 is a plan view, and FIG. 7 is a right side view thereof. On the right side of the board reversing device 1, a square pole 54 having a height Hh of about 3.1 m is erected. The height of the roof of the forklift is about 2.7 m, and the forklift does not hit the pole 51 even with ten boards. A rod 51 having a length of about 6 m extends from the square pole 54, and a string switch 53 hangs from the tip of the rod 51. The rod 51 is reinforced by a reinforcing rod 52.
In FIG. 6, the forklift can approach or move away from the board reversing device without concern for the rod 51.
[0021]
Next, the operation of the board reversing device having the above configuration will be described.
A case where the number of shipments is, for example, 16 will be described. The architectural boards placed in the luggage yard are placed face up. The operator first lifts the forklift in a state where 10 sheets are stacked and moves to the board reversing device 1 shown in FIG.
At this time, the board reversing device 1 is in a state where the rod tip portion 36 of the hydraulic cylinder 31 is retracted in FIG. 1, and the table 34 of the table elevating device 3 is at a position closest to the fixing portion 41. Further, the board B does not exist in FIG.
[0022]
In this state, the operator operates the forklift so that the fork is inserted between the three retainers 25 on the upper side of the lower plate 21 and puts ten boards on the retainers 25 at a time. Place. As shown in the figure, the height of the surface of the retainer 25 on which the rubber is stretched is set to H1.
Thereafter, the operator retracts the forklift to a position where the string switch 53 at the tip of the rod 51 can be manually operated. Then, the string switch 53 is pulled to turn on the switch.
When confirming that the board is turned on, the board reversing device 1 supplies hydraulic pressure to the hydraulic cylinder 31 of the table lift 3 to drive it. By projecting the rod tip portion 36, the two sliding rotation support portions 39 and 40 slide inward. Then, the table 34 is extruded toward the lower plate 21.
[0023]
FIG. 1 shows a case where the number of the boards B is six. However, when the number of the boards B is ten, the rubber surface of the retainer 35 comes into contact with the surface of the uppermost board B of the board B, and a predetermined pressing force, By design, when the pressure exceeds 16000N, the rod end portion 36 of the hydraulic cylinder 31 stops. In the present embodiment, the pressing force is managed by the hydraulic pressure supplied to the hydraulic cylinder 31. That is, after the movement of the rod tip 36 of the hydraulic cylinder 31 stops, it is confirmed that the hydraulic pressure supplied to the hydraulic cylinder 31 is equal to or higher than a predetermined value.
If the hydraulic pressure supplied to the hydraulic cylinder 31 is equal to or higher than a predetermined value after the rod tip 36 stops, it is determined that the presser clamp 35 of the table 34 is holding the ten boards together with a predetermined force. I do. This is a means for detecting the clamping force.
A check valve (not shown) is provided between the hydraulic supply source and the hydraulic cylinder 31. Even when the supply pressure of the hydraulic supply source decreases during the reversing operation, the board is kept at a predetermined clamping pressure. Is sandwiched.
[0024]
If the holding force is detected and determined to be equal to or greater than the predetermined value, the reversing geared motor 4 is rotated to rotate the rotating frame 2 about the rotating shaft 23 by 180 degrees. The rotation direction is the left rotation and the direction indicated by the arrow in FIG. The 180-degree rotation position is detected by a limit switch (not shown).
This state is shown in FIG. However, the number of boards B is written as six. With this, the ten boards are in a state where their finds face downward. Next, the hydraulic cylinder 31 of the table lift 3 is driven in the direction in which the rod tip 36 retracts. As a result, the sliding rotation support portions 39 and 40 move outward, change the position in the direction in which the links 32 and 33 are closed, and move the table 34 to the contracted state to release the holding.
[0025]
FIG. 5 shows this state. However, the number of boards B is written as six. At this time, the height H2 of the upper surface of the retainer 35, that is, the lowermost surface of the board B is the same as the height indicated by H1 in FIG. Therefore, the forklift can directly enter the fork into the rotating frame without changing the height of the fork when the forklift is carried. For this reason, work efficiency can be improved.
Then, the operator inserts a fork between the three retainers 35, lifts ten boards with the fork, moves the board to the truck, and loads the truck.
[0026]
Next, the operator inverts the six boards, but the same until the board B is inserted into the rotary frame 2. The table lift 3 moves the table 34 to a position where the table 34 holds the board B.
If the hydraulic pressure supplied to the hydraulic cylinder 31 is equal to or greater than a predetermined value after the rod tip 36 stops, it is determined that the presser plate 35 of the table 34 is holding the six boards together with a predetermined force. I do.
[0027]
If the holding force is detected and determined to be equal to or greater than the predetermined value, the reversing geared motor 4 is rotated to rotate the rotating frame 2 about the rotating shaft 23 by 180 degrees. The rotation direction is the direction indicated by the right rotation and the arrow in FIG. The 180-degree rotation position is detected by a limit switch (not shown).
This state is shown in FIG. The six boards are now in a state where the finds face downward. Next, the hydraulic cylinder 31 of the table lift 3 is driven in the direction in which the rod tip 36 retracts. As a result, the sliding rotation support portions 39 and 40 move outward, change the position in the direction in which the links 32 and 33 are closed, and move the table 34 to the contracted state to release the holding.
[0028]
FIG. 5 shows this state. At this time, the height H2 of the lowermost surface of the board B is the same as the height indicated by H1 in FIG. Therefore, the forklift can directly enter the fork into the rotating frame without changing the height of the fork when the forklift is carried. For this reason, work efficiency can be improved.
Then, the operator inserts a fork between the three retainers 25, lifts the six boards with the fork, moves the board to the truck, and loads the truck.
[0029]
As described in detail above, according to the board reversing device of the present embodiment, the base 11 fixed on the ground, and supported by the base 11 so as to be rotatable around the pair of rotation shafts 23, And a rotating frame 2 having a hollow portion through which an arbitrary number of boards B are carried in and out, and a table 34 fixed to one side 22 of the rotating frame 2 to move an arbitrary number of boards B by the table 34. Since it has the table elevator 3 to be sandwiched and the geared motor 4 for reversing the rotating shaft 23, an arbitrary number of boards B can be reversed at a time, so that the efficiency of the work of shipping by truck is reduced. Can be significantly increased.
[0030]
Also, a base 11 fixed to the ground, and a rectangular rotating part having a hollow portion supported by the base 11 so as to be rotatable around a pair of rotation shafts 23 and through which a heavy board B is carried in and out. The frame 2, a table elevator 3 having an expansion / contraction mechanism that expands / contracts the table 34 with respect to a fixed portion 41 fixed to the inner surface 22 of one side of the rotary frame 2, and a reversing geared motor 4 that reverses the rotation shaft 23. In a state where the telescopic mechanism is contracted, a pair of the upper surface of the table 34 and the inner surface of the lower plate 21 facing the inner surface of the upper plate 22 provided with the table elevator 3 of the rotary frame 2 are provided on the intermediate surface. Since the center line of the rotary shaft 23 is located, any number of boards B can be inverted at a time, and the fork can always be operated at almost the same height when being taken in and out by a forklift. Improve It is possible.
[0031]
Further, since the holding members 25 and 35 for forming a space into which the fork of the forklift can be inserted are provided on the surface of the table 34 in contact with the board B and the inner surface of the opposing plate 21, the forklift can be easily rotated. It can be inserted into the frame 2 and workability can be improved. Note that rubber is attached to the surfaces of the retainers 25 and 35 to increase friction.
Further, since the table lift 4 has means for detecting the force holding the board B, the reversing operation can be performed reliably and safely.
[0032]
Next, a second embodiment will be described with reference to FIG. Since the basic configuration is the same as that of the first embodiment, only the differences will be described in detail.
The holding mechanism includes a hydraulic cylinder 62, a pair of links 63, and two sliding members 64 connected to the links. The rod end of the hydraulic cylinder 62 is rotatably connected to each end of the pair of links 63. The link 63 and the sliding member 64 are connected in such a manner that a pin fixed to the sliding member 64 is engaged with a long hole formed at the other end of the link 63.
With this structure, by driving the hydraulic cylinder 62, the link can be moved from the position 63A to the position 63B, and the tip of the sliding member 64 can be pressed against the board B, thereby holding the board B.
The lower plate 69 and the upper plate 70 are respectively formed with concave portions 69a and 70a for inserting a fork of a forklift.
The operation is almost the same as that of the first embodiment, so that the detailed description is omitted.
[0033]
Next, a third embodiment will be described with reference to FIG. Since the basic configuration is the same as that of the first embodiment, only the differences will be described in detail.
The holding mechanism is constituted by two hydraulic cylinders 72. A flat pressing portion is formed at the rod end of the hydraulic cylinder 72, and thereby presses the board B.
With this structure, by driving the hydraulic cylinder 72, the rod tip can be pushed out and pressed against the board B, and the board B can be clamped.
The lower plate 73 and the upper plate 74 are respectively formed with concave portions 73a and 74a for inserting a fork of a forklift.
The operation is almost the same as that of the first embodiment, so that the detailed description is omitted.
[0034]
Although the embodiment of the board reversing device of the present invention has been described above, the present invention is not limited to this, and various changes can be made without departing from the gist of the present invention.
For example, in the present embodiment, the pressing force is detected by the hydraulic pressure supplied to the hydraulic cylinder, but the pressing force may be directly detected by attaching a strain gauge to the pressing portion. Further, it may be designed so that a spring load is always applied as a pressing force via a spring.
[0035]
【The invention's effect】
According to the board reversing device of the present invention, a base fixed to the ground, and a hollow supported by the base so as to be rotatable about a pair of rotating shafts and carrying an arbitrary number of heavy loads. Frame, a holding means fixed to one side of the rotating frame, moving the moving holding portion to hold an arbitrary number of boards by the moving holding portion, and a reversing motor for reversing the rotation axis. Since it can be used, any number of boards can be inverted at a time, so that the efficiency of the work of shipping by truck can be significantly improved.
[Brief description of the drawings]
FIG. 1 is a front view of a board reversing device 1 according to a first embodiment.
FIG. 2 is a plan view of the board reversing device 1. FIG.
FIG. 3 is a right side view of the board reversing device 1.
FIG. 4 is a first operation diagram illustrating an operation process.
FIG. 5 is a second operation diagram illustrating an operation process.
FIG. 6 is a plan view showing a configuration of a peripheral device of the board reversing device 1.
FIG. 7 is a side view of FIG. 6;
FIG. 8 is a front view illustrating a configuration of a board reversing device according to a second embodiment.
FIG. 9 is a front view illustrating a configuration of a board reversing device according to a third embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Board reversing device 2 Rotating frame 3 Table elevator 21 Lower plate 22 Upper plate 23 Rotating shaft 25, 35 Holder 31 Hydraulic cylinder 32, 33 Link 34 Table 41 Fixed part

Claims (4)

A base fixed on the ground,
A rotating frame provided with a hollow portion in which the base is rotatably supported around a pair of rotating shafts, and an arbitrary number of boards that are heavy objects are loaded and unloaded.
Holding means fixed to one side of the rotating frame, moving a pressing member, and holding the arbitrary number of boards by the pressing member;
A board reversing device, comprising: a reversing motor for reversing the rotation axis. A base fixed on the ground,
A rectangular rotating frame provided with a hollow portion in which the base is rotatably supported around a pair of rotating shafts, and a heavy board is carried in and out,
For a fixed portion fixedly provided on the inner surface of one side of the rotating frame, a holding means having an expansion / contraction mechanism for expanding / contracting the moving holding portion,
A reversing motor for reversing the rotation axis,
In a state where the expansion and contraction mechanism is contracted, a center line of the pair of rotation shafts is provided on an intermediate surface between a surface of the movable holding portion and a surface of the rotating frame opposed to an inner surface on one side provided with the holding means. A board reversing device, characterized in that: The board reversing device according to claim 2,
A board reversing device, wherein a presser is provided on a surface where the movable holding portion contacts the board and on a surface facing the board. In any one of the board reversing devices according to claim 1,
The board reversing means, wherein the extension mechanism has a means for detecting a force for holding the board.

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